12-02-2002 01:21 PM - edited 02-20-2020 10:24 PM
Hi,
Is it possible to establish GRE\IP (no IPSec) between a Cisco IOS router and PIX ? Is there any document i can refer to ?
Regards \\ Naman
12-02-2002 04:13 PM
The PIX won't terminate a GRE tunnel specifically. You can pass a GRE tunnel THROUGH a PIX and terminate it on an inside router, although not something I'd probably recommend.
If you do want to do that, you have to assign a static translation for the inside router interface, then just allow IP protocol 47 through from IPSec peer to that static address.
12-03-2002 07:38 AM
Thank you very much.
12-03-2002 12:06 AM
Hello
You cannot terminate GRE onto a pix, but as the last reply said you can pass GRE tunnels through a PIX, which is a far as I am aware is the only way to pass OSPF/EIGRP routing information and non IP traffic through an IPSec VPN terminated on a PIX as IPSec does not support non IP traffic or the multicast hellos of these routing protocols. So I think in some circumstances GRE through the PIX is useful.
Cheers
ps For some reason GRE information has become more difficult to find since the website has changed
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