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ss - another utility to investigate sockets
NAME
ss - another utility to investigate sockets
SYNOPSIS
ss [options] [ FILTER ]
DESCRIPTION
ss is used to dump socket statistics. It allows showing information similar to netstat.
It can display more TCP and state informations than other tools.
OPTIONS
When no option is used ss displays a list of open non-listening TCP sockets that have established connection.
-h, --help
Show summary of options.
-a, --all
Display both listening and non-listening (for TCP this means established connections) sockets.
-l, --listening
Display only listening sockets (these are omitted by default).
-p, --processes
Show process using socket.
-t, --tcp
Display TCP sockets.
-u, --udp
Display UDP sockets.
$ ss -h
Usage: ss [ OPTIONS ]
ss [ OPTIONS ] [ FILTER ]
-h, --help this message
-a, --all display all sockets
-l, --listening display listening sockets
-t, --tcp display only TCP sockets
-u, --udp display only UDP sockets
| ss | List all connections |
| ss -a | List listening and non-listening ports |
| ss -l | List listening ports |
| ss -lt | List listening TCP connections |
| ss -ua | List UDP socket connections |
| ss -lu | List listening UDP socket connections |
| ss -at '( dport = :22 or sport = :22 )' | List of ports 22 |
$ ss -t State Recv-Q Send-Q Local Address:Port Peer Address:Port ESTAB 0 96 13.xx.xx.xx:22 14.xx.xx.xx:8901 $
$ ss -tl State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 128 127.0.0.1:cslistener *:* LISTEN 0 128 127.0.0.1:etlservicemgr *:* LISTEN 0 128 *:http *:* LISTEN 0 128 *:22 *:* LISTEN 0 128 *:ddi-tcp-1 *:* LISTEN 0 100 127.0.0.1:smtp *:* LISTEN 0 128 *:https *:* LISTEN 0 128 :::22 :::* LISTEN 0 100 ::1:smtp :::* $