Netstat

From NovaOrdis Knowledge Base
Revision as of 00:17, 4 October 2019 by Ovidiu (talk | contribs) (→‎Mac)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

External

Internal

Installation

yum install net-tools

Finding out what processes are listening and on what sockets

Linux

netstat -nl --program

The --program option will list the PID/process path.

Mac

netstat -n | grep LISTEN
lsof -nP -i4TCP:$PORT | grep LISTEN

Scan Open Ports and Shut Down Services

netstat -tulpn

Options

-n

Show numerical addresses instead of trying to determine symbolic host, port or user names.

-l

Show only listening sockets (these are omitted by default).

-p

Show the PID and name of the program to which each socket belongs.

-a

Show the state of all sockets; normally sockets used by server processes are not shown. With the routing table display (option -r), show protocol-cloned routes (routes generated by a RTF_PRCLONING parent route); normally these routes are not shown.