OpenVPN along with CentminMod, possible?

what VPS type ? Xen, KVM or OpenVZ

yes CSF Firewall would interfere and different steps in iptables/csf config to get it to work for Xen/KVM vs OpenVZ that involve adding OpenVZ iptable rules to a manually created file at /etc/csf/csfpre.sh with iptable specific rules for OpenVZ to work and then chmod +x that file

Code:

chmod +x /etc/csf/csfpre.sh

then restart CSF firewall

Code:

service csf restart

or

Code:

csf -r

Unfortunately, don't really provide support for stuff like OpenVZ

 

It should