iptables on cPanel-DNSOnly and nrpe

Asim Zeeshan

• July 11, 2015 05:37

I have a clean installation of cPanel-DNSOnly. Everything is setup and running great [LIST]

SELINUX is disabled

iptables is running

Added the following rule to enable nrpe requests from my nagios server (1.2.3.4)
iptables -A INPUT -m tcp -p tcp --src 1.2.3.4 --dport 5666 -j ACCEPT iptables -A INPUT -m udp -p udp --src 1.2.3.4 --dport 5666 -j ACCEPT
To diagnose this, I tried these as well but no effect
iptables-save > /etc/sysconfig/iptables iptables -F iptables-restore < /etc/sysconfig/iptables iptables-save service iptables restart
After spending about 2 hours, I just turned it off and nagios could reach the cPanel-DSNOnly server. At the moment its stopped but I want to fix my problem to get it back online with iptables Any help?

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  dalem

  • July 13, 2015 23:54

  This should work for you iptables -I INPUT -p tcp -s 1.2.3.4 --dport 5666 -j ACCEPT iptables -I INPUT -p udp -s 1.2.3.4 --dport 5666 -j ACCEPT iptables -A INPUT -p tcp --dport 5666 -j DROP iptables -A INPUT -p udp --dport 5666 -j DROP service iptables save
  

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  cPanelMichael

  • July 20, 2015 16:13

  Hello :) Have you considered installing a firewall management utility such as CSF instead of adjusting the iptables rules manually? Thank you.

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