$ sudo netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:35813           0.0.0.0:*               LISTEN      -

$ sudo lsof -i :35813

$ sudo lsof -Pni -sTCP:LISTEN
COMMAND     PID     USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
rpc.statd   520    statd    9u  IPv4  11556      0t0  TCP *:56969 (LISTEN)
rpc.statd   520    statd   11u  IPv6  11562      0t0  TCP *:46289 (LISTEN)
rpcbind     522     root    8u  IPv4  11545      0t0  TCP *:111 (LISTEN)
rpcbind     522     root   11u  IPv6  11548      0t0  TCP *:111 (LISTEN)

$ sudo fuser 35813/tcp

$ telnet 192.168.0.16 35813
Trying 192.168.0.16...
Connected to 192.168.0.16.
Escape character is '^]'.