vpn port forward?

Hey everybody,

Here's the situation, I have a sidewinder firewall right behind a Cisco 2811 router. The router has an external public IP address, so it offered a NAT overload (PAT). I want to allow users to connect to my network using a vpn ipsec to the firewall. Due to design issues, I can't put the firewall directly on the Internet. Now, here is my question I have to port before the router's ipsec vpn firewall? And now, the question of the great rookie if I need to port-forward how can I do this?

Thanks for the help,

Andrew

Andrew,

I don't know if the firewall supports forwarding port or how to do it, but you will need to redirect

UDP 500 port

ESP IP protocol

UDP port 4500

So, if it's a cisco device, you create a rule to forward ports above to the internal firewall of port forwarding.

To do port forwarding in the router you do:

IP nat inside source udp static x.x.x.x interface 500 500

IP nat inside source udp static x.x.x.x interface 4500 500

IP nat inside source static esp x.x.x.x interface

Federico.

Tags: Cisco Security

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