Operating System & Version
cloudlinux 7.8
cPanel & WHM Version
11.88.0.13

LifeSteala

Member
Dec 16, 2007
21
0
51
Hi
I'm not sure if this is the right forum but I ran this netstat command to see a list of IP connections of my server. There's a bunch of 1 connected IPs which I removed but I am seeing 54 connections from 0.0.0.0.

I've not seen this before.

Does anyone know what 0.0.0.0 is?

Code:
[[email protected] ~]# netstat -anp |grep 'tcp\|udp' | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
      1 BUNCH OF IPs
      9 127.0.0.1
     25
     27 IP HERE
     54 0.0.0.0
 

andrew.n

Well-Known Member
Jun 9, 2020
520
139
43
EU
cPanel Access Level
Root Administrator
0.0.0.0 is local connection. Do you know what is the port? My guess would be MySQL or something like that.
 

cPanelLauren

Product Owner
Staff member
Nov 14, 2017
13,296
1,263
313
Houston
This wouldn't have just one port assignment. Local services connect over a port with 0.0.0.0 for internal connections. For example on my test server:

Code:
[[email protected] logs]# netstat -anp |grep '0.0.0.0' |awk '{print $4, $7}' |cut -d: -f2 |sort |uniq -c |sort -n
      1 110 3623/dovecot
      1 111
      1 111 502/rpcbind
      1 11211 1432/memcached
      1 143 3623/dovecot
      1 2077 33810/cpdavd
      1 2078 33810/cpdavd
      1 2082 1975/cpsrvd
      1 2083 1975/cpsrvd
      1 2086 1975/cpsrvd
      1 2087 1975/cpsrvd
      1 2095 1975/cpsrvd
      1 2096 1975/cpsrvd
      1 21 1436/pure-ftpd
      1 22 1445/sshd
      1 25 24623/exim
      1 443 20721/httpd
      1 465 24623/exim
      1 52223 4927/im360
      1 52224 4927/im360
      1 52227 4927/im360
      1 52228 4927/im360
      1 52229 4927/im360
      1 52230 4927/im360
      1 52231 4927/im360
      1 52232 4927/im360
      1 53
      1 53 1410/pdns_server
      1 587 24623/exim
      1 62311 33912/CalendarServe
      1 676
      1 783 3584/spamd
      1 80 20721/httpd
      1 953 1410/pdns_server
      1 993 3623/dovecot
      1 995 3623/dovecot
      2 5432 33708/postgres
      4 123