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Cisco Pix and ISA Server 2004

I am trying to create a front end back end firewall solution using Pix Version 6.3(5) as my front end and Microsoft ISA server 2004 as my backend. I am trying to pass Microsoft client VPN connections thru the Pix firewall and terminate them on the ISA server. I have added these commands to the Pix.

access-list outside_acl permit tcp any host 64.206.48.XX (external address of Pix)

static (inside, outside) 64.206.48.xx 22.218.0.xx netmask 0 0

22.218.0.xx is the "external interface" of the ISA server. With this configuration, inside users can access the internet, but any attempts to create and terminate a external VPN connection receives the error "remote computer did not respond." What do I need to do to pass pptp and l2tp traffic to the ISA server?

New Member

Re: Cisco Pix and ISA Server 2004

You need to permit gre traffic to your ISA server

access-list outisde_acl permit gre any host 64.206.48.xx

Make sure your access list is applied to the outside interface.

access-group outside_acl in interface outside

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