The Command line is for everyone!, Apr 2005 , Page 00045

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Page 45: Complex Command Lines (cont)

  
  Complex Command Lines (cont)
  Find those connections via netstat:
    $ netstat -natp | head -3
    (Not all processes could be identified, non-owned process info
    will not be shown, you would have to be root to see it all.)
    tcp   0   0 0.0.0.0:80        0.0.0.0:*             LISTEN
    tcp   0   0 192.168.1.200:22  216.293.217.155:27123 ESTABLISHED
    tcp   0   0 0.0.0.0:443       0.0.0.0:*             LISTEN
    $ netstat -natp 2>/dev/null | grep $myip:22
    tcp   0   0 192.168.1.200:22  216.293.217.155:27123 ESTABLISHED
    tcp   0   0 192.168.1.200:22  18.193.259.1:52211    ESTABLISHED
    tcp   0   0 192.168.1.200:22  216.293.217.155:15928 ESTABLISHED
    $  netstat -natp 2>/dev/null | grep $myip:22 | wc -l
    3

Presented at LFNW - LinuxFest Northwest, Bellingham, Washington, Apr 2005