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Networking

ss

Inspects sockets and listening ports.

ss shows TCP, UDP, Unix sockets, listening services, and connection state. It is the modern replacement for netstat.

Syntax
ss [options]

Arguments explained

  • -t shows TCP.
  • -u shows UDP.
  • -l shows listening sockets.
  • -n avoids DNS/service name lookup.
  • -p shows processes when permitted.

Common examples

Show listening TCP ports
ss -tlnp

Lists listening TCP sockets with numeric ports and processes when allowed.

Show established connections
ss -tun

Shows TCP and UDP sockets numerically.

ss Command
FieldDetails
Commandss
CategoryNetworking
Primary useInspects sockets and listening ports.
Syntaxss [options]

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