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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: 8.8.8.8 My PIX Public IP: 7.7.7.7

Provider Tunnel Address: 192.168.99.1/30 My Tunnel Address: 192.168.99.2/30

Antonius Bloch
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3 Answers3

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Sorry, but a PIX/ASA device is not capable of being an endpoint for GRE tunneling. You'll need a router device instead.

Shane Madden
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Cisco ASA devices don't support being GRE tunnel endpoints. You need to use a Cisco router if you want a Cisco device terminating that tunnel.

Evan Anderson
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Here is a guide for Setting up a GRE Tunnel on a Cisco router but as the poster above said, you need a router, not an ASA device.

  • Link-only answers are strongly discouraged. Please provide content **here** and then link elsewhere for more details. – EEAA Dec 12 '16 at 16:16