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