StrongSwan - Initializing iptables failed
 

Hello all,

I am trying to set up a VPN using StrongSwan and Xl2tpd,
now when the client connects to the server, the server fails at initializing iptables.

The exact error message is:
initializing iptables failed: Permission denied (you must be root)

The software versioning information:
- StrongSwan 5.5.1/K4.9.0-5-amd64
- xl2tpd 1.3.8

StrongSwan is setup to use PSK for authentication

^^ That seems pretty clear...

I installed StrongSwan from debian repo,
So unless debian messed with the configuration parameters to have the kernel module
run as something other than user root & group root, which is what the StrongSwan documentation
says it'll default to if not set in the configuration, then I whouldn't be getting that error.
Neither one of those values are set in the configuration, and even when they
were explicitly set to root, I still got the same error message.