Get Open Connections

lsof command when invoked with option -i, it gives the list of open network ports for all active processes on the device. To get a list of open network ports for a specific process, the lsof -i -a -p <pid> command can be used, where -a (AND) option is used for filtering. Below a filtered output for PID 1 is shown.

iPhone:~ root# lsof -i -a -p 1
COMMAND PID USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
launchd   1 root   27u  IPv6 0x69c2ce210efdc023      0t0  TCP *:ssh (LISTEN)
launchd   1 root   28u  IPv6 0x69c2ce210efdc023      0t0  TCP *:ssh (LISTEN)
launchd   1 root   29u  IPv4 0x69c2ce210eeaef53      0t0  TCP *:ssh (LISTEN)
launchd   1 root   30u  IPv4 0x69c2ce210eeaef53      0t0  TCP *:ssh (LISTEN)
launchd   1 root   31u  IPv4 0x69c2ce211253b90b      0t0  TCP 192.168.1.12:ssh->192.168.1.8:62684 (ESTABLISHED)
launchd   1 root   42u  IPv4 0x69c2ce211253b90b      0t0  TCP 192.168.1.12:ssh->192.168.1.8:62684 (ESTABLISHED)