How to increase numiptent limit?

You may got the following errors ( Most probably after enabling CSF )

The VPS iptables rule limit (numiptent) is too low (300/450) – stopping firewall to prevent iptables blocking all connections

It is because you have reached the “numiptent” limit and firewall is unable to add new rules.

You can increase this value by editing the container configuration. In this case my container ID is “9339″. So the configuration file will be “/etc/sysconfig/vz-scripts/9339.conf”.

You can find the line “NUMIPTENT” in this configuration file.

grep NUMIPTENT /etc/sysconfig/vz-scripts/9339.conf
NUMIPTENT="512:512"

Edit oy to increase the “numiptent” limit.

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