sockstat

List open Internet or UNIX domain sockets. Note: this program is a rewrite for NetBSD 3.0 from FreeBSD's sockstat. See also: netstat. More information: https://man.netbsd.org/sockstat.1.

• Show information for IPv4, IPv6 and Unix sockets for both listening and connected sockets:

sockstat

• Show information for IPv[4]/IPv[6] sockets [l]istening on specific [p]orts using a specific [P]rotocol:

sockstat -4|6 -l -P tcp|udp|sctp|divert -p port1,port2…

• Also show [c]onnected sockets, showing [u]nix sockets:

sockstat -cu

• Only show [n]umeric output, without resolving symbolic names for addresses and ports:

sockstat -n

• Only list sockets of the specified address [f]amily:

sockstat -f inet|inet6|local|unix