Assignment 3.0: Securing SSH

Summary

This assignment went extremely well the only problem I had was a lot of the guides had different ways to restart the sshd service so it was tricky to find which one work.

Commands

1. vi /etc/shh/sshd_config
2. Go to the line that says #PermitRootLogin yes
3. Get rid of the # and turn yes to no
   • end result PermitRootLogin no
4. Write and Quit
5. service sshd restart
6. Now root won’t be able to ssh

Notes

1. Root uid is 0
2. First user uid is 1000
3. uids 999(polkitd), 998(libstoragemgmt), 997(chrony)
   • polkitd is a system wide privilege controller
   • libstoragemgmt A library for storage management (API)
   • chrony Netowrk Time Protocol (NTP) uses port 323