~ $ netstat -lt
Активные соединения с интернетом (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State    
tcp        0      0 localhost:5939          *:*                     LISTEN    
tcp        0      0 *:ftp                   *:*                     LISTEN    
tcp        0      0 smsserver:domain        *:*                     LISTEN    
tcp        0      0 localhost:ipp           *:*                     LISTEN    
tcp        0      0 localhost:mysql         *:*                     LISTEN    
tcp6       0      0 [::]:http               [::]:*                  LISTEN    
tcp6       0      0 ip6-localhost:ipp       [::]:*                  LISTEN    
~ $ sudo netstat -tulpn | grep :21
tcp        0      0 0.0.0.0:21              0.0.0.0:*               LISTEN      29877/proftpd: (acc