How to add a Firewall Exception for Reverse Proxy services

Why?

In Reverse Proxy mode (not tunnels or VPNs) all connections proxied by X4B will come from our servers instead of a client. To most firewalls this appears like an attack from your proxy IP.

Testing

For testing and before opening a support ticket you should disable all rules. On linux the firewall module of choice is iptables. You can temporarily clear all iptables rules with the following commands.

iptables -F
iptables -X
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT

Adding an exception in CSF

To add an exception in CSF you need to edit your csf.allow file this can usually be found in /etc/csf/csf.allow