NYCU-SA

Instructor: 蔡孟勳 Meng-Hsun Tsai
Semester: NYCU-112-1
Pre-requisites:
- Basic knowledge of UNIX commands
- Basic Programming skills
- Basics of TCP/IP Networking
- Your HARD STUDY
Grading
- Mid 15%
- Final 15%
- Homeworks 70%
Credit: 3
Contact:
- TR: tsaimh@cs.nycu.edu.tw
- TA: ta@nasa.cs.nycu.edu.tw
Reference Website:
1. NYCU-SA-2023: https://nasa.cs.nycu.edu.tw/sa/2023/
2. NASA-OJ: https://nasaoj.cs.nycu.edu.tw
3. ShellCheck: https://www.shellcheck.net

HW1

Install FreeBSD / Ubuntu & WireGuard

Basic(15%)
- Install FreeBSD 13.2-RELEASE
- Alternatively, Install Ubuntu 22.04
Root on ZFS (15%)
- Zpool name : zroot (rpool on Ubuntu)
Add a user and a group
- User should also be in the "wheel" group ("sudo" on Ubuntu)
- Use this user to do this homework instead of root (using sudo)
Add a user called "judge" for Online Judge
- User should also be in the "wheel" ("sudo" on ubuntu) group
- Please use "sh" as default shell (10%)
- This user needs to run sudo without password (15%)
Set your machine to current time zone and adjust current time (10%)
- CST

Enable sshd (20%)

Install this public key to your /home/judge/.ssh/ for Online Judge.

$ fetch https://nasa.cs.nctu.edu.tw/sa/2023/nasakey.pub
$ cat nasakey.pub >> /home/judge/.ssh/authorized_ke

You can use Fingerprint to check "nasakey.pub"

$ ssh-keygen -l -f nasakey.pub
256 SHA256:0LO0tdbs1Q5q4J8wa4Hidej2gkq9gqtLQeJwm98VYZk sa-2023 (ED25519)

Install Wireguard
- Configure the connection
- Configuration directory: /usr/local/etc/wireguard/wg0.conf
- Use wg-quic and wg to start/stop the connection

Shell Script