NCAE-Tips and Tricks

MOCs

• Getting Root Back
• Whitelist SSH Users
• Looking at Network

Getting Root Back

Whitelist SSH Users and Other SSH Tricks

Whitelist

vim /etc/ssh/sshd_config

Make the following line

AllowedUsers <username> <username>

Only ssh keys

Looking at Network

ss -tunap

Netid        State              Recv-Q         Send-Q                          Local Address:Port                     Peer Address:Port         Process                                         
udp          ESTAB              0              0                      172.16.0.121%wlp0s20f3:68                         172.16.0.1:67                                                           
udp          UNCONN             0              0                                     0.0.0.0:35940                         0.0.0.0:*                                                            
udp          UNCONN             0              0                                     0.0.0.0:37304                         0.0.0.0:*                                                            
udp          UNCONN             0              0                                     0.0.0.0:21027                         0.0.0.0:*             users:(("syncthing",pid=2821,fd=19))           
udp          UNCONN             0              0                                     0.0.0.0:5353                          0.0.0.0:*                                                            
udp          UNCONN             0              0                                        [::]:21027                            [::]:*             users:(("syncthing",pid=2821,fd=22))           
udp          UNCONN             0              0                                        [::]:5353                             [::]:*                                                            
udp          UNCONN             0              0                                           *:22000                               *:*             users:(("syncthing",pid=2821,fd=13))