Netstat
Usage
netstat [-vWeenNcCF] [<Af>] -r netstat {-V|--version|-h|--help}
netstat [-vWnNcaeol] [<Socket> ...]
netstat { [-vWeenNac] -i | [-cnNe] -M | -s [-6tuw] }
Flags
-r, --route display routing table
-i, --interfaces display interface table
-g, --groups display multicast group memberships
-s, --statistics display networking statistics (like SNMP)
-M, --masquerade display masqueraded connections
-v, --verbose be verbose
-W, --wide don't truncate IP addresses
-n, --numeric don't resolve names
--numeric-hosts don't resolve host names
--numeric-ports don't resolve port names
--numeric-users don't resolve user names
-N, --symbolic resolve hardware names
-e, --extend display other/more information
-p, --programs display PID/Program name for sockets
-o, --timers display timers
-c, --continuous continuous listing
-l, --listening display listening server sockets
-a, --all display all sockets (default: connected)
-F, --fib display Forwarding Information Base (default)
-C, --cache display routing cache instead of FIB
-Z, --context display SELinux security context for sockets
<Socket>={-t|--tcp} {-u|--udp} {-U|--udplite} {-S|--sctp} {-w|--raw}
{-x|--unix} --ax25 --ipx --netrom
<AF>=Use '-6|-4' or '-A <af>' or '--<af>'; default: inet
List of possible address families (which support routing):
inet (DARPA Internet) inet6 (IPv6) ax25 (AMPR AX.25)
netrom (AMPR NET/ROM) ipx (Novell IPX) ddp (Appletalk DDP)
x25 (CCITT X.25)
Examples
Show routing table
$ netstat -r
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
default _gateway 0.0.0.0 UG 0 0 0 enp0
link-local 0.0.0.0 255.255.0.0 U 0 0 0 enp0
10.10.10.0 0.0.0.0 255.255.255.0 U 0 0 0 enp0
Show ports that are listened on (TCP)
$ netstat -nlvpt
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:5939 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:8888 0.0.0.0:* LISTEN 2977/rslsync
tcp 0 0 127.0.0.1:1080 0.0.0.0:* LISTEN 17613/ssh
tcp 0 0 127.0.0.1:1337 0.0.0.0:* LISTEN 17613/ssh
tcp 0 0 127.0.0.1:1338 0.0.0.0:* LISTEN 17613/ssh
tcp 0 0 127.0.0.1:1339 0.0.0.0:* LISTEN 17613/ssh
tcp 0 0 127.0.0.1:2525 0.0.0.0:* LISTEN 17613/ssh
tcp 0 0 127.0.0.1:5054 0.0.0.0:* LISTEN 3627/python3
tcp 0 0 0.0.0.0:8834 0.0.0.0:* LISTEN -
tcp 0 0 0.0.0.0:16966 0.0.0.0:* LISTEN 2977/rslsync
tcp 0 0 127.0.0.1:4455 0.0.0.0:* LISTEN 17613/ssh
tcp 0 0 127.0.0.1:2222 0.0.0.0:* LISTEN 17613/ssh
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:34512 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:42321 0.0.0.0:* LISTEN -
tcp6 0 0 ::1:1337 :::* LISTEN 17613/ssh
tcp6 0 0 127.0.0.1:41401 :::* LISTEN 4181/cryptomator
[...REDACTED...]
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