# ss > Utility to investigate sockets. > More information: . - 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}}`