NWS: Network Security Course slide set

Final Exam

## The End
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
  - They are ending after this Tuesday
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW P7: CTF](../hws/ctf/index.html) is out, and due tomorrow (Tuesday, 4/30)
    - Relevant info is on the Canvas landing page
    - A hint web page is available as well
    - Apparently ping is only working from on-grounds, not via a VPN
- Grading: still left to grade: a whole bunch of stuffs
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
  - The intent is to make it a combination of a survey and a CTF-style exam, which you can do from anywhere
- Today we will finish [Network Malware](../slides/malware.html#/) starting on 9.9
  - Then onto the [course conclusion](../slides/conclusion.html#/)

From xkcd

## Lecture 41: Fri, Apr 26th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW S7: Snort](../hws/snort/index.html) was due Wednesday
    - Frustration level: avg 3.53, stdev 1.04, n=45
    - Difficulty: avg 3.36, stdev 0.74, n=45
    - Average time taken: 4.14 hours, stdev 1.61, n=45
  - [HW P7: CTF](../hws/ctf/index.html) is out, and due Tuesday (4/30)
    - Relevant info is on the Canvas landing page
    - A hint web page is available as well
- Grading: still left to grade: last two quizzes and the DNS HW (and, shortly, the XSS HW)
  - Progress is being made on all three of those...
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings:
  - None assigned currently
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue [Network Malware](../slides/malware.html#/) starting on 8.1

From here

## Lecture 40: Wed, Apr 24th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW S7: Snort](../hws/snort/index.html) was due yesterday -- how did it go?
  - The next (and last) homework, a capture-the-flag assignment, should be out later today
- Grading: still left to grade: last two quizzes and the DNS HW (and, shortly, the XSS HW)
  - Progress is being made on all three of those...
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings:
  - None assigned currently
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue [Network Malware](../slides/malware.html#/) starting on 6.3

From here

## Lecture 38: Fri, Apr 19th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW S7: Snort](../hws/snort/index.html), is out, due next Tuesday
    - For the last part, you only have to do two rules (previously it was three)
- Grading: still left to grade: last two quizzes and the DNS HW (and, shortly, the XSS HW)
  - Progress is being made on all three of those...
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings:
  - None assigned currently
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue [Intrusion Detection Systems](../slides/ids.html#/), starting on 3.11
  - Next up: [Network Malware](../slides/malware.html#/)

From here

## Lecture 37: Wed, Apr 17th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are all caught up!!! Or, rather, they were as of Sunday night
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW P6: XSS](../hws/xss/index.html) was due yesterday; how did it go?
    - Frustration level: vg 2.39, stdev 0.92, n=44
    - Difficulty: avg 2.86, stdev 0.93, n=44
    - Average time taken: 2.79 hours, stdev 1.32, n=44
  - The next HW, on [Snort](../hws/snort/index.html), will be out today
    - A draft is ready, but I want to do a few more editing runs though it
- Grading: still left to grade: last two quizzes and the DNS HW (and, shortly, the XSS HW)
  - Progress is being made on all three of those...
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings:
  - None assigned currently
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue [Attacks](../slides/attacks.html#/), starting on 6.3
  - Next up: [Intrusion Detection Systems](../slides/ids.html#/)

From here

## Lecture 36: Mon, Apr 15th: TAX DAY
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are all caught up!!!
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW P6: XSS](../hws/xss/index.html) is due this Tuesday, April 16th
    - Apparently it does not work in Chrome
    - The auto-grader will be opened up tonight, but it can't check anything upon submission
- Grading: still left to grade: last two quizzes and the DNS HW
  - Progress is being made on all three of those...
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings:
  - None assigned currently
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue with [Web security](../slides/websecurity.html#/), starting on 5.11
  - Then back to [Attacks](../slides/attacks.html#/)

From here

## Lecture 35: Fri, Apr 12th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are behind again
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW P6: XSS](../hws/xss/index.html) is due next Tuesday, April 16th
    - Apparently it does not work in Chrome
- Grading: still left to grade: last two quizzes and the DNS HW
  - Progress is being made on all three of those...
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings:
  - None assigned currently
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue with [Web security](../slides/websecurity.html#/), starting on 3.10

From here

## Lecture 34: Wed, Apr 10th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are behind again
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW P6: XSS](../hws/xss/index.html) is due next Tuesday, April 16th
    - Apparently it does not work in Chrome
- Grading: still left to grade: last two quizzes and the DNS HW
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings:
  - None assigned currently
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will start on [Web security](../slides/websecurity.html#/)

From here

## ECLIPSE DAY!!!
- Eclipse information
  - Begins at 2:01 pm, ends at 4:31 pm
  - Maximum at 3:17 pm (88.3% covered)
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
    - No OH for me today because of the eclipse
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Next HW will be out today, on XSS
- Grading: still left to grade: last two quizzes and the DNS HW
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings:
  - None assigned currently
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will finish with [Social Engineering](../slides/social-eng.html#/) starting at 4.11
  - Next up: [Web security](../slides/websecurity.html#/)

From here

## Lecture 32: Fri, Apr 5th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
    - My OH on Monday will be 2-4, with an eclipse break in the middle
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Next HW will be out soon
- Grading: [HW P4: TCP Reconstruction](../hws/tcprecon/index.html) was graded and returned this past Tuesday
  - Still left to grade: last two quizzes and the DNS HW
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings:
  - Due this today: watch [Last Week Tonight with John Oliver: Data Brokers](https://www.youtube.com/watch?v=wqn3gR1WTcA) from Apr 11, 2022; 25 minutes
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will talk about with [Social Engineering](../slides/social-eng.html#/)

From here

## Lecture 31: Wed, Apr 3rd
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW P5: DNS Spoofing](../hws/dnsspoof/index.html) was due yesterday.  There were some... issues.
    - Frustration level: avg 3.51, stdev 1.27, n=41
    - Difficulty: avg 2.59, stdev 0.81, n=41
    - Average time taken: 4.52 hours, stdev 3.21, n=41
- Grading: [HW P4: TCP Reconstruction](../hws/tcprecon/index.html) was graded and returned last night
  - Still left to grade: last two quizzes and the DNS HW
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings:
  - Due this Friday (April 5): watch [Last Week Tonight with John Oliver: Data Brokers](https://www.youtube.com/watch?v=wqn3gR1WTcA) from Apr 11, 2022; 25 minutes
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue with [BGP](../slides/bgp.html#/) starting on 3.5

From here

## Lecture 30: Mon, Apr 1st
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Mon 5-7, Tue 5-7; all in Rice 442
    - Adding Mon 5-7, removing Tue 3-5 and Fri 2-4
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW P5: DNS Spoofing](../hws/dnsspoof/index.html) is out, and due next Tuesday
    - So.... problems.  It's all Microsoft's fault.
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings:
  - Due Friday (April 5): watch [Last Week Tonight with John Oliver: Data Brokers](https://www.youtube.com/watch?v=wqn3gR1WTcA) from Apr 11, 2022; 25 minutes
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will finish with [attack examples](../slides/attacks.html#/) starting on 5.1
  - Next up: [BGP](../slides/bgp.html#/)

From here

## Lecture 29: Fri, Mar 29th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
    - Fri 2-4 may be ending
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW P5: DNS Spoofing](../hws/dnsspoof/index.html) is out, and due Tuesday (tomorrow)
    - Troubleshooting issues...
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): 
  - Due today: Du, chapter 12 (BGP): sections 12.1-12.7, but not 12.4
  - Due next Friday (April 5): watch [Last Week Tonight with John Oliver: Data Brokers](https://www.youtube.com/watch?v=wqn3gR1WTcA) from Apr 11, 2022; 25 minutes
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue with [attack examples](../slides/attacks.html#/) starting on 4.1
  - Next up: BGP

From here

## Lecture 28: Wed, Mar 27th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
    - Fri 2-4 may be ending
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW P5: DNS Spoofing](../hws/dnsspoof/index.html) will be ready tonight
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): BGP, chapter 12 (sections 12.1-12.7, but not 12.4)
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue with [DNS](../slides/dns.html#/), starting on 5.12
  - Next up: [attack examples](../slides/attacks.html#/)

From here

## Lecture 27: Mon, Mar 25th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
    - Fri 2-4 may be ending
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - The next homework (DNS) will be out today or tomorrow
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): BGP, chapter 12 (sections 12.1-12.7, but not 12.4)
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue with [DNS](../slides/dns.html#/), starting on 4.34

From here

## Lecture 26: Fri, Mar 22nd
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
    - Fri 2-4 may be ending, but won't be held today
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are mostly caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Next homework will be a ~~DNS~~ Firewall homework, but it's not yet ready
- [Midterm](../exams/midterm-s24.pdf) before spring break; it's graded and returned
  - Average was 35.2/48 (73.3%) with a standard deviation of 6.9 (14.3%)
  - Regrades are open until the end of the day today
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): yes, there is one, due next Friday, on BGP; details to be posted on the Canvas landing page later tonight.
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue with [DNS](../slides/dns.html#/), starting on 4.7

From here

## Lecture 25: Wed, Mar 20th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
    - Fri 2-4 may be ending
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are behind again
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due yesterday: [TCP reconstruction](../hws/tcprecon/index.html): how did it go? Ignore a score of 0 on this assignment
    - Frustration: avg 2.67, stdev 1.09, n=45
    - Difficulty: avg 2.98, stdev 0.94, n=45
    - Average time taken: 4.89 hours, stdev 3.04, n=45
  - Next homework will be a DNS homework, but it's not yet ready
- [Midterm](../exams/midterm-s24.pdf) before spring break; it's graded and returned
  - Average was 35.2/48 (73.3%) with a standard deviation of 6.9 (14.3%)
  - Regrades are open until the end of the day today
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): none yet, more assigned soon
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue with [DNS](../slides/dns.html#/), starting on 3.19

From here

## Lecture 24: Mon, Mar 18th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
    - Fri 2-4 may be ending
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are behind again
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due tomorrow, Tuesday, March 19th: [TCP reconstruction](../hws/tcprecon/index.html)
    - A few notes: index.html size, FIN packets are not HTTP, write in binary mode, submission will open tonight
- [Midterm](../exams/midterm-s24.pdf) before spring break; it's graded and returned
  - Average was 35.2/48 (73.3%) with a standard deviation of 6.9 (14.3%)
  - Regrades are open until the middle of this week
- Grading: everything has been returned!  Don't get use to this, though....
- Regrades:
  - Auto-graded HWs via a support request, written ones via Gradescope, all within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): due today, Monday (3/18): Du, chapter 10 (sections 10.1 -- 10.4) and chapter 11; total of 28 pages
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will start on [DNS](../slides/dns.html#/)

From here

## Lecture 23: Fri, Mar 15th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due next Tuesday, March 19th: [TCP reconstruction](../hws/tcprecon/index.html)
- [Midterm](../exams/midterm-s24.pdf) before spring break; it's graded and returned
  - Average was 35.2/48 (73.3%) with a standard deviation of 6.9 (14.3%)
  - We'll go over it today
  - Regrades are open until early next week
- Grading: everything has been returned!
  - Don't get use to this, though....
- Regrades:
  - Auto-graded HWs: submit it as a support request within about 1 week of when it is returned
  - For the written assignments (midterm, quizzes), the regrade request is through Gradescope, also within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): due next Monday (3/18): Du, chapter 10 (sections 10.1 -- 10.4) and chapter 11; total of 28 pages
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue with [Encryption](../slides/encryption.html#/) starting on 7.15

From here

## Lecture 22: Wed, Mar 13th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
    - My office hours today are 12-1:30, not 8:30-9
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due next Tuesday, March 19th: [TCP reconstruction](../hws/tcprecon/index.html)
- [Midterm](../exams/midterm-s24.pdf) before spring break; it's graded and returned
  - Average was 35.2/48 (73.3%) with a standard deviation of 6.9 (14.3%)
  - We'll go over it today
  - Let's chat about submitting regrades; they'll open up later today
- Grading: everything has been returned!
  - Don't get use to this, though....
- Regrades:
  - Auto-graded HWs: submit it as a support request within about 1 week of when it is returned
  - For the written assignments (midterm, quizzes), the regrade request is through Gradescope, also within about 1 week
  - Regrades are going to take some time; don't hold your breath on those...
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): due next Monday (3/18): Du, chapter 10 (sections 10.1 -- 10.4) and chapter 11; total of 28 pages
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue with [Encryption](../slides/encryption.html#/) starting on 6.16

From here

## Lecture 21: Mon, Mar 11th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402; TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
    - My office hours Wednesday will be 12-1:30, not 8:30-9
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Web of Trust comments (stats: frustration 2.87, time taken 3.5 hours)
  - Due next Tuesday, March 19th: TCP reconstruction; this will be out in a day or two
- [Midterm](../exams/midterm-s24.pdf) before spring break; it's graded and returned
  - Average was 35.2/48 (73.3%) with a standard deviation of 6.9 (14.3%)
  - Let's chat about submitting regrades; they'll open up later today
- Grading: only things outstanding are the two reading quizzes; everything else has been returned
  - Regrades:
    - Auto-graded assignments: submit it as a support request within about 1 week of when it is returned
    - For the written assignments (midterm, quizzes), the regrade request is through Gradescope
    - Regrades are going to take some time; don't hold your breath on those...
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): due next Monday (3/18): Du, chapter 10 (sections 10.1 -- 10.4) and chapter 11; total of 28 pages
- About the final exam: there will not be an *in-person **AND** required* final exam
  - Legalese: There may still be a final, but it will either be online, optional, a make-up, etc.
  - I'm not sure how I want to handle this yet, but the grading percentages will have to change
- Today we will continue with [Encryption](../slides/encryption.html#/) starting on 6.1

From here

## Lecture 20: Fri, Mar 1st
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
  - No office hours until we return from spring break
- Support requests are backed up again
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due today, Friday, March 1st: [HW S6: Web of Trust, part 2 (submission)](../hws/weboftrust/index.html)
    - You can submit this multiple times, if you want -- it will only tell you if the keys are known or not, and not if they are adversarial or not until later
    - GPG responses in Canvas' Posted Feedback
    - Anybody send an email and not receive an answer?  If so, email again please.
    - About the grading...
  - No homework over spring break, but one will be assigned once we return
- [Midterm](../exams/midterm-s24.pdf) this past Wednesday!  How was it?
  - It should be graded and returned by when we come back from spring break
- Grading
  - ARP spoofing: will be finishing this up over spring break
  - Wireshark will require manual grading of the pcaps, so that will take some time to return
  - All regrades should be submitted as a support request within about 1 week of when it is returned
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): none currently assigned b/c of the upcoming midterm
- Today we will continue with [Encryption](../slides/encryption.html#/) starting on 6.1

From here

## Lecture 18: Mon, Feb 26th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
  - No office hours after the midterm until classes resume after spring break
- Support requests are now enabled
- Homeworks on next slide
- Midterm this Wednesday!
  - What to prepare (no code, yes to lectures, sorta for textbook readings)
- Grading
  - ARP spoofing: will be finishing this up over spring break
  - Ping Commands: grades released
  - Wireshark will require manual grading of the pcaps, so that will take some time to return
  - All regrades should be submitted as a support request within about 1 week of when it is returned
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): none currently assigned b/c of the upcoming midterm
- HooHacks!  March 23-24.  Info at https://hoohacks.io, sign up at https://app.hoohacks.io.
- Today we will continue with [Encryption](../slides/encryption.html#/) starting on 4.4

## Homeworks
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due last Friday, February 23rd: [HW S6: Web of Trust, part 1 (key upload)](../hws/weboftrust/index.html)
    - Generate a PGP key, upload it to Gradescope, send an email
    - The email response is available via Canvas Posted Feedback
    - Make sure you sent an email!  A few students did not do so.
  - Due this Friday, March 1st: [HW S6: Web of Trust, part 2 (submission)](../hws/weboftrust/index.html)
    - You can submit this multiple times, if you want -- it will only tell you if the keys are known or not, and not if they are adversarial or not until later
    - GPG responses in Canvas' Posted Feedback
    - Anybody send an email and not receive an answer?  If so, email again please.
    - About the grading...

From here

## Lecture 17: Fri, Feb 23rd
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
  - No office hours after the midterm until classes resume after spring break
- Support requests are now enabled
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due today (Friday, February 23rd): [HW S6: Web of Trust, part 1](../hws/weboftrust/index.html)
    - Generate a PGP key, upload it to Gradescope, send an email
    - The email response is available via Canvas Posted Feedback)
  - Due Friday, March 1st: [HW S6: Web of Trust, part 2](../hws/weboftrust/index.html)
- Midterm next week on Wednesday
- Grading
  - ARP spoofing: the test results are ready, but not the grades; please look them over and let me know if I got it wrong
  - Ping Commands: grades released
  - Wireshark will require manual grading of the pcaps, so that will take some time to return
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): none currently assigned b/c of the upcoming midterm
- Today we will continue with [Encryption](../slides/encryption.html#/) starting on 3.8?

<h2 class="r-fit-text">Recap: Survey Results (n=60); updated</h2>

| Knowledge | Score |
|----|----|
| TLS | 2.83 |
| Rootkits | 2.87 |
| Certificates | 2.95 |
| AES | 2.97 |
| XSS | 3.03 |
| DHE | 3.18 |
| OSI model | 3.25 |
| Hashing | 3.48 |
| Random numbers | 3.47 |
| Buffer overflows | 3.57 |
| DOSes | 3.58 |
| RSA | 3.65 |
| SQL injection | 3.82 |

From here

## Lecture 16: Wed, Feb 21st
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are now enabled, and I'm all caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due yesterday: [HW P3: Wireshark](../hws/wireshark/index.html)
    - Frustration level: avg 2.11, stdev 0.80, n=45
    - Wireshark comfort level: avg 2.44, stdev 0.59, n=45
    - Difficulty: avg 2.29, stdev 0.69, n=45
    - Average time taken: 2.59 hours, stdev 0.88, n=45
  - Due this Friday, February 23rd: [HW S6: Web of Trust, part 1](../hws/weboftrust/index.html)
  - Due Friday, March 1st: [HW S6: Web of Trust, part 2](../hws/weboftrust/index.html)
- Midterm next week on Wednesday
- Grading
  - ARP spoofing: the test results are ready, but not the grades; please look them over and let me know if I got it wrong
  - Ping Commands: grades released
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): none currently assigned b/c of the upcoming midterm
- Today we will continue with [Firewalls](../slides/firewalls.html#/), starting on 3.3

## What color is this?
What color is the dark background:
![](https://www.cs.virginia.edu/~asb2t/what-color-is-this.png)

<div class="fragment">
<p>Various creative answers:</p>
<table class="transparent" style="font-size:1.5em"><tr>
<td><ul>
<li font-size>#12272e, a very murky dark blue</li>
<li>#12272e</li>
<li>black</li>
<li>dark blue almost black</li>
<li>dark blue</li>
</ul></td><td><ul>
<li>dark bluish grey</li>
<li>dark teal, almost black</li>
<li>dark teal</li>
<li>navy black</li>
<li>very very dark blue</li>
</ul></td></tr></table>
</ul></div>

From here

## Lecture 15: Mon, Feb 19th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are now enabled, and I'm all caught up
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due last Fri, Feb 16th: [HW S5: Metasploitable2 Exploration](../hws/metasploit/index.html): how was it?
    - Amount learned: avg 3.06, stdev 0.63, n=49
    - Frustration level: avg 2.00, stdev 1.00, n=49
    - Difficulty: avg 1.96, stdev 0.79, n=49
    - Average time taken: 1.45 hours, stdev 0.88, n=49
  - Due tomorrow, Tuesday, February 20th: [HW P3: Wireshark](../hws/wireshark/index.html)
    - The necessary links are on the Canvas landing page
  - Due this Friday, February 23rd: [HW S6: Web of Trust, part 1](../hws/weboftrust/index.html)
  - Due Friday, March 1st: [HW S6: Web of Trust, part 2](../hws/weboftrust/index.html)
- Midterm next week on Wednesday
- Grading
  - ARP spoofing: the test results are ready, but not the grades; please look them over and let me know if I got it wrong
  - Ping Commands: grades released
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): none currently assigned b/c of the upcoming midterm
- Today we will continue with [Firewalls](../slides/firewalls.html#/), starting on 3.3

From here

## Lecture 14: Fri, Feb 16th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Support requests are now enabled, but I'm way behind; I'll catch up this weekend
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due today (Fri, Feb 16th): [HW S5: Metasploitable2 Exploration](../hws/metasploit/index.html)
    - Submission is now open
    - There was an errant character on line 66 of the Python file; that character has to be removed in order for it to parse correctly upon submission
  - Due Tuesday, February 20th: [HW P3: Wireshark](../hws/wireshark/index.html)
    - The necessary links are on the Canvas landing page
  - Due Friday, February 27th: [HW S6: Web of Trust, part 1](../hws/weboftrust/index.html), which is *almost* ready
  - Schedule moving forward:
    - Week of Feb 26th: midterm Wednesday, Web of Trust part 2 due Friday
    - Week of Mar 4th: spring break
- Readings from [the textbook](https://www.amazon.com/dp/1733003967)
  - Due today (Fri, Feb 16th): Du, chaps 7 (firewall) but not 7.3 and 7.4, and chap 9 (firewall evasion); 27 pp
- Today we will finish [Transport Layer](../slides/transport-layer.html#/), starting on 9.4
  - Next up: [Firewalls](../slides/firewalls.html#/)

From here

## Happy Valentines Day!
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due yesterday: [HW P2: Ping Commands](../hws/pingcmd/index.html); how did it go?
    - Frustration level: avg 2.26, stdev 1.03, n=47
    - Difficulty: avg 2.83, stdev 0.82, n=47
    - Time taken: 3.57 hours, stdev 1.99, n=47
  - Due this Fri, Feb 16th: [HW S5: Metasploitable2 Exploration](../hws/metasploit/index.html)
    - Submission is now open
    - There was an errant character on line 66 of the Python file; that character has to be removed in order for it to parse correctly upon submission
  - Due next Tuesday, February 20th: [HW P3: Wireshark](../hws/wireshark/index.html)
    - The necessary links are on the Canvas landing page
  - Schedule moving forward:
    - Week of Feb 19th: Wireshark HW due Tuesday, Web of Trust part 1 due Friday
    - Week of Feb 26th: midterm Tuesday, Web of Trust part 2 due Friday
    - Week of Mar 4th: spring break
- Readings from [the textbook](https://www.amazon.com/dp/1733003967)
  - Due this Fri, Feb 16th: Du, chaps 7 (firewall) but not 7.3 and 7.4, and chap 9 (firewall evasion); 27 pp
- Today we will likely finish [Transport Layer](../slides/transport-layer.html#/), starting on 8.1

From here

## Lecture 12: Mon, Feb 12th
- Office hours:
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due tomorrow, Tue, Feb 13th: [HW P2: Ping Commands](../hws/pingcmd/index.html)
  - Due Fri, Feb 16th: [HW S5: Metasploitable2 Exploration](../hws/metasploit/index.html)
  - Schedule moving forward:
    - Week of Feb 19th: Wireshark HW due Tuesday, Web of Trust part 1 due Friday
    - Week of Feb 26th: midterm Tuesday, Web of Trust part 2 due Friday
    - Week of Mar 4th: spring break
- Readings from [the textbook](https://www.amazon.com/dp/1733003967)
  - Due this Fri, Feb 16th: Du, chaps 7 (firewall) but not 7.3 and 7.4, and chap 9 (firewall evasion); 27 pp
- Today we will finish [Packet Sniffing and Spoofing](../slides/packets.html#/), starting at 5.3
  - Then go back to [Transport Layer](../slides/transport-layer.html#/), starting on 7.1

From here

## Lecture 11: Fri, Feb 9th
- Office hours are underway
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due this past Tuesday: [HW P1: ARP Spoofing](../hws/arp/index.html)
    - I'll start grading it this weekend, but it may not be ready by Monday
  - Nothing due today
  - Due Tue, Feb 13th: [HW P2: Ping Commands](../hws/pingcmd/index.html)
  - Due Fri, Feb 16th: [HW S5: Metasploitable2 Exploration](../hws/metasploit/index.html)
  - Schedule moving forward:
    - Week of Feb 19th: Wireshark HW due Tuesday, Web of Trust part 1 due Friday
    - Week of Feb 26th: midterm Tuesday, Web of Trust part 2 due Friday
    - Week of Mar 4th: spring break
- Readings from [the textbook](https://www.amazon.com/dp/1733003967)
  - Due today (Fri, Feb 9th): Du, chap 5 (transport layer), sections 6.1-6.3 of chapter 6 (TCP attacks); 25 pp
  - Due next Fri, Feb 16th: Du, chaps 7 (firewall) but not 7.3 and 7.4, and chap 9 (firewall evasion); 27 pp
- Today we will continue with the [Transport Layer](../slides/transport-layer.html#/), starting on 5.3
  - Then go back and see a bit more of [Packet Sniffing and Spoofing](../slides/packets.html#/), starting at 5.1

From here

## Lecture 10: Wed, Feb 7th
- Office hours are underway
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due yesterday: [HW P1: ARP Spoofing](../hws/arp/index.html)
    - So.... how did it go?
    - Statistics:
      - Difficulty: avg 3.33, stdev 0.83, n=49
      - Frustration: avg 3.27, stdev 1.13, n=49
      - Average time taken (n=49): 5.10 hours, stdev 2.72
  - Due Tue, Feb 13th: [HW P2: Ping Commands](../hws/pingcmd/index.html)
  - Due Fri, Feb 16th: [HW S5: Metasploitable2 Exploration](../hws/metasploit/index.html)
    - Note the due date change!  Nothing is due this Friday
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): due Fri, Feb 9th: Du, chap 5 (transport layer), sections 6.1-6.3 of chapter 6 (TCP attacks); 25 pp
- WICS hack-a-thon Feb 24th & 25th: https://www.wicsatuva.com/hack-the-map
- I've organized a middle school girls computing club!  Interested in helping out?
- Today we will finish [Packet Sniffing and Spoofing](../slides/packets.html#/), starting at 4.4
  - Next up: [Transport Layer](../slides/transport-layer.html#/)

From here

## Lecture 9: Mon, Feb 5th
- Office hours are underway
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due last Friday: [HW S4: Network commands tutorial](../hws/netcmds/index.html)
    - Knew the commands before: avg 2.37, stdev 1.05, n=52
    - Knew the commands after: avg 3.90, stdev 0.77, n=52
    - Average time taken (n=52): 1.73 hours
  - Due Tue, Feb 6: [HW P1: ARP Spoofing](../hws/arp/index.html)
    - Submission will open tonight, as I am working on a test harness
  - Due Fri, Feb 9: [HW S5: Metasploitable2 Exploration](../hws/metasploit/index.html)
  - Due Tue, Feb 13th will be a homework on sending shell commands through a ping
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): due Fri, Feb 9th: Du, chap 5 (transport layer), sections 6.1-6.3 of chapter 6 (TCP attacks); 25 pp
- Today we will finish with the [network layer](../slides/network-layer.html#/), starting at 7.19
  - Next up: [Packet Sniffing and Spoofing](../slides/packets.html#/)

From here

## Lecture 8: Fri, Feb 2nd
- Office hours are underway
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due today (Fri, Feb 2): [HW S4: Network commands tutorial](../hws/netcmds/index.html)
  - Due next Tue, Feb 6: [HW P1: ARP Spoofing](../hws/arp/index.html)
    - Gradescope can't really test this assignment very well...
  - Due next Fri, Feb 9: [HW S5: Metasploitable2 Exploration](../hws/metasploit/index.html)
  - Due Tue, Feb 13th will be a homework on TCP redirection through ICMP
- Note the Python version on Gradescope is 3.10.12; I can upgrade that, if desired
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): due Fri, Feb 9th: Du, chap 5 (transport layer), sections 6.1-6.3 of chapter 6 (TCP attacks); 25 pp
- Today we will continue with the [network layer](../slides/network-layer.html#/), starting at 6.3

From here

## Lecture 7: Wed, Jan 31st
- Office hours are underway
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW S3: Linux tutorial homework](../hws/linux/index.html) stats (n=49)
    - Time taken: 1.49 hours
    - Knew Linux commands before: 3.67
    - Knew Linux commands after: 4.41
    - Went through tutorials: 28 True (57.1%), 21 False (42.9%)
  - Due this Fri, Feb 2: [HW S4: Network commands tutorial](../hws/netcmds/index.html)
  - Due next Tue, Feb 6: [HW P1: ARP Spoofing](../hws/arp/index.html)
  - Due next Fri, Feb 9: [HW S5: Metasploitable2 Exploration](../hws/metasploit/index.html)
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): due today: chapter 3 (22 pages)
- Today we will continue with the [network layer](../slides/network-layer.html#/), starting at 5.3

From here

## Lecture 6: Mon, Jan 29th
- Office hours are underway
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - [HW S2: Docker homework](../hws/docker/index.html) stats
    - Docker installed on machine: 50 True (92.6%), 4 False (7.4%), n=54
    - Docker GUI working: 40 True (74.1%), 14 False (25.9%), n=54
    - Frustration level: avg 2.61, stdev 0.98, n=54
    - Docker command understanding: avg 3.36, stdev 0.87, n=54
    - Got vsFTPd exploit working: 45 True (83.3%), 9 False (16.7%), n=54
  - Due tomorrow, Tue, Jan 30: HW [S3: Linux tutorial](../hws/linux/index.html)
  - Due this Fri, Feb 2: HW [S4: Network commands tutorial](../hws/netcmds/index.html)
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): chapter 3 (22 pages)
  - Now due this Wed, Jan 31st
  - If ordering it from Amazon causes a problem, please let me know!
- Today we will start on the [network layer](../slides/network-layer.html#/)

From here

## Lecture 5: Fri, Jan 26th
- Office hours are underway
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Be sure to read the [course syllabus](syllabus.html)
- Support requests are now enabled
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due today (Fri, Jan 26): HW [S2: Docker setup](../hws/docker/index.html)
    - Updates for Mac users who are running into oddball issues
  - Due Tue, Jan 30: HW [S3: Linux tutorial](../hws/linux/index.html)
  - Due next Fri, Feb 2: HW [S4: Network commands tutorial](../hws/netcmds/index.html)
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): chapter 3 (22 pages)
  - Now due Wed, Jan 31st
  - If ordering it from Amazon causes a problem, please let me know!
- Today we will finish the [data link layer](../slides/link-layer.html#/), starting on slide 8.5
  - Next up: [network layer](../slides/network-layer.html#/)

From amazon

## Lecture 4: Wed, Jan 24th
- Office hours are underway
  - Mine are M/W 8:30-10 am in Rice 402
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; all in Rice 442
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Be sure to read the [course syllabus](syllabus.html)
- Support requests are now enabled
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due yesterday: HW S1: fill out the Google survey (link on Canvas page)
    - We will go over the results on the next slide
  - Due this Fri, Jan 26: HW [S2: Docker setup](../hws/docker/index.html)
    - A note for Mac users about the `socat` command
    - Some are having display issues ("can't find file or directory" or "authorization required, but no authorization protocol specified"); a resolution to this will be out tonight
    - Windows users: a note on the file path
  - Due next Tue, Jan 30: HW [S3: Linux tutorial](../hws/linux/index.html)
  - Due next Fri, Feb 2: HW [S4: Network commands tutorial](../hws/netcmds/index.html)
    - We'll go over it briefly today
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): due Mon, Jan 29th: chapter 3 (22 pages)
  - If ordering it from Amazon causes a problem, please let me know!
- Today we will continue with the [data link layer](../slides/link-layer.html#/)
  - Next up: [network layer](../slides/network-layer.html#/)

## Survey Results (n=58)

| Knowledge | Score |
|----|----|
| TLS | 2.86 |
| Rootkits | 2.88 |
| Certificates | 2.93 |
| AES | 2.95 |
| XSS | 3.03 |
| DHE | 3.17 |
| OSI model | 3.22 |
| Hashing | 3.48 |
| Random numbers | 3.5 |
| Buffer overflows | 3.55 |
| DOSes | 3.57 |
| RSA | 3.64 |
| SQL injection | 3.79 |

From here

## Lecture 3: Mon, Jan 22nd
- Office hours start this week
  - Mine are M/W 8:30-10 am
  - TAs are Mon 2-4, Tue 3-7, and Fri 2-4; room TBA
  - This is listed on the [Canvas landing page](https://canvas.its.virginia.edu/courses/92875), along with a link to the TA pictures and bios
- Be sure to read the [course syllabus](syllabus.html)
- Support requests are now enabled
- Homeworks: (due by 11:59:59 pm on that day; Gradescope opens up 3 days prior)
  - Due this Tue, Jan 23: HW S1: fill out the Google survey (link on Canvas page)
    - No other submission necessary
    - Will show the (anonymized) results on Wednesday
  - Due this Fri, Jan 26: HW [S2: Docker setup](../hws/docker/index.html)
    - We'll go over it briefly today
  - Due next Tue, Jan 30: HW [S3: Linux tutorial](../hws/linux/index.html)
    - We'll go over it briefly today
  - A smaller homework due late next week will be a tutorial (networking commands)
- Readings from [the textbook](https://www.amazon.com/dp/1733003967): due Mon, Jan 29th: chapter 3 (22 pages)
- ENGR 1501: Cryptocurrency mining class this semester! 1 credit; see the [flyer](https://www.cs.virginia.edu/~asb2t/engr1501-ccmining-flyer.pdf) and the [syllabus](https://www.cs.virginia.edu/~asb2t/engr1501-ccmining-syllabus.pdf)
- About my ICMP answer from Friday...
- Today we will start on the [data link layer](../slides/link-layer.html#/)
  - I fixed the images in the slide sets

From here

## Lecture 2: Fri, Jan 19th
- Office hours will start next week
- Be sure to read the [course syllabus](syllabus.html)
- Support requests will be enabled this weekend
- Homeworks: (due by 11:59:59 pm on that day)
  - Due next Tue, Jan 23: HW S1: fill out the Google survey (link on Canvas page)
    - No other submission necessary
  - Due next Fri, Jan 26: HW [S2: Docker setup](../hws/docker/index.html)
    - We'll go over it briefly today
    - The gradescope submission will open up 3 days prior
  - The two homeworks due the following week will be tutorials (Linux, networking commands)
- Readings from [the textbook](https://www.amazon.com/dp/1733003967) will start being assigned next week
- ENGR 1501: Cryptocurrency mining class this semester! 1 credit; see the [flyer](https://www.cs.virginia.edu/~asb2t/engr1501-ccmining-flyer.pdf) and the [syllabus](https://www.cs.virginia.edu/~asb2t/engr1501-ccmining-syllabus.pdf)
- Today we will start on the [physical network layer](../slides/physical-layer.html#/)
  - Followed by the [data link layer](../slides/link-layer.html#/)
  - A comment about the images in the slide sets...