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| Subject: | RE: VPN protocols |
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| Date: | Wed, 22 Dec 2004 09:04:16 -0800 |
GRE and ESP are protocols, not ports, so they are transported through on configured ports. In Cisco, you permit gre and esp through for the VPN traffic. In a conduit statement: conduit permit esp any any conduit permit esp any any notice that there is no tcp, udp, or ip in the permit statement. I've noticed that, on some firewalls, it is buried deep in the bowels of the config, and has timeouts set to drop the protocol after so many minutes.
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