I'm trying to establish one half of a GRE tunnel, the other being configured by my service provider. I have a Cisco PIX-506-E running Firewall version 6.3(5).
Provider Router Public IP: 126.96.36.199 My PIX Public IP: 188.8.131.52
Provider Tunnel Address: 192.168.99.1/30 My Tunnel Address: 192.168.99.2/30
I'm not familiar with PIX, and scrubbing the web and cisco.com hasn't yielded results. I'm basically looking for a mini howto. Bounty points for well written step by step instructions.