Hi Bill, I found nDPI (http://www.ntop.org/products/ndpi/) lists IP in IP as a supported protocol. That doesn't fit your requirement that it be an appliance but maybe it gets you going in the right direction. Cheers, Kyle On Tue, Jul 30, 2013 at 1:38 PM, William Herrin <bill@herrin.us> wrote:
On Tue, Jul 30, 2013 at 4:19 PM, Michael Brown <michael@supermathie.net> wrote:
In the pfSense UI, you create the physical interface as a GRE tunnel then assign it to a logical interface against which you can apply the firewall rules:
Thanks all. To be clear: I'm dealing with IPIP packets, not GRE packets. Linux LVS emits IPIP encapsulated packets when the target server is non-local. I have no option to emit GRE or another kind of tunnel packet.
Also, I'd prefer not to terminate the IPIP tunnel on the firewall. I can, but I'd prefer not to. What I want to do is look inside at the packet encapsulated by IPIP. Even if I have to hand-crank the rules in terms of byte X inside the packet should be value Y.
Thanks again, Bill Herrin
-- William D. Herrin ................ herrin@dirtside.com bill@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004