┌───| ~ ](centoob@localhost.localdomain)[/bin/bash]|[03:09][p:18709][bn:11][j:0]► [0] 
└─$  ss -tulpan
Netid  State      Recv-Q Send-Q                                                                Local Address:Port                                                                               Peer Address:Port              
udp    UNCONN     0      0                                                                                 *:68                                                                                            *:*                  
udp    UNCONN     0      0                                                                         127.0.0.1:323                                                                                           *:*                  
udp    UNCONN     0      0                                                                                 *:63053                                                                                         *:*                  
udp    UNCONN     0      0                                                                                :::49346                                                                                        :::*                  
udp    UNCONN     0      0                                                                               ::1:323                                                                                          :::*                  
tcp    LISTEN     0      50                                                                                *:3306                                                                                          *:*                  
tcp    LISTEN     0      128                                                                               *:22                                                                                            *:*                  
tcp    LISTEN     0      100                                                                       127.0.0.1:25                                                                                            *:*                  
tcp    ESTAB      0      0                                                                         10.0.2.15:22                                                                                     10.0.2.2:52460              
tcp    ESTAB      0      0                                                                         10.0.2.15:22                                                                                     10.0.2.2:41244              
tcp    LISTEN     0      128                                                                              :::80                                                                                           :::*                  
tcp    LISTEN     0      128                                                                              :::22                                                                                           :::*                  
tcp    LISTEN     0      100                                                                             ::1:25                                                                                           :::*                  

┌───| ~ ](centoob@localhost.localdomain)[/bin/bash]|[03:13][p:18709][bn:11][j:0]► [0] 
└─$  ss -tulpa
Netid  State      Recv-Q Send-Q                                                              Local Address:Port                                                                               Peer Address:Port                
udp    UNCONN     0      0                                                                               *:bootpc                                                                                        *:*                    
udp    UNCONN     0      0                                                                       127.0.0.1:323                                                                                           *:*                    
udp    UNCONN     0      0                                                                               *:63053                                                                                         *:*                    
udp    UNCONN     0      0                                                                              :::49346                                                                                        :::*                    
udp    UNCONN     0      0                                                                             ::1:323                                                                                          :::*                    
tcp    LISTEN     0      50                                                                              *:mysql                                                                                         *:*                    
tcp    LISTEN     0      128                                                                             *:ssh                                                                                           *:*                    
tcp    LISTEN     0      100                                                                     127.0.0.1:smtp                                                                                          *:*                    
tcp    ESTAB      0      0                                                                       10.0.2.15:ssh                                                                                    10.0.2.2:52460                
tcp    ESTAB      0      0                                                                       10.0.2.15:ssh                                                                                    10.0.2.2:41244                
tcp    LISTEN     0      128                                                                            :::http                                                                                         :::*                    
tcp    LISTEN     0      128                                                                            :::ssh                                                                                          :::*                    
tcp    LISTEN     0      100                                                                           ::1:smtp                                                                                         :::*