ss

Utility to investigate sockets. More information: https://manned.org/ss.8.

• Show all TCP/UDP/RAW/UNIX sockets:

ss -a -t|-u|-w|-x

• Filter TCP sockets by states, only/exclude:

ss state/exclude bucket/big/connected/synchronized/…

• Show all TCP sockets connected to the local HTTPS port (443):

ss -t src :443

• Show all TCP sockets listening on the local 8080 port:

ss -lt src :8080

• Show all TCP sockets along with processes connected to a remote SSH port:

ss -pt dst :ssh

• Show all UDP sockets connected on specific source and destination ports:

ss -u 'sport == :source_port and dport == :destination_port'

• Show all TCP IPv4 sockets locally connected on the subnet 192.168.0.0/16:

ss -4t src 192.168/16

• Kill IPv4 or IPv6 Socket Connection with destination IP 192.168.1.17 and destination port 8080:

ss --kill dst 192.168.1.17 dport = 8080