TMG - allow l2tp-ipsec ports

Hi all,

I have created a non web publishing rule for my l2tp-ipsec server by allowing protocols UDP 1701, 4500 and 500

Also I have seen on google that you also need to allow protocol IP-level 50 to my l2tp-ipsec server

The thing is it won't let me add protocol ip-level to my existing rule I can only add more TCP and UDP protocols

I think the only way to do this is to create a new non web publishing rule and just have the ip-level protocol 50 and have it pointing to my l2tp-ipsec server

Thanks,

Rob