Cisco VPN :: To Connect To Remote PPTP VPN Via PIX 515e

Feb 7, 2012

A user in our office needs to connect to a client's remote PPTP VPN but can't connect.  The user is running Windows 7.  We have a Cisco PIX 515e firewall that is running PIX Version 6.3(3) - this is what our user is having to go through to try and make the connection to the client's remote VPN.
 
The client's network guys have come back and said the issue is at our side.  They say that they can see some of our traffic but not all of it. The standard error is shown below, and they say it's symptomatic of the client-side firewall not allowing PPTP traffic:
 
"A connection between the VPN server and the VPN client XXX.XXX.XXX.XXX has been established, but the VPN connection cannot be completed. The most common cause for this is that a firewall or router between the VPN server and the VPN client is not configured to allow Generic Routing Encapsulation (GRE) packets (protocol 47). Verify that the firewalls and routers between your VPN server and the Internet allow GRE packets. Make sure the firewalls and routers on the user's network are also configured to allow GRE packets. If the problem persists, have the user contact the Internet service provider (ISP) to determine whether the ISP might be blocking GRE packets."
 
I have very little firewall experience and absolutely no Cisco experience I'm afraid.  From looking at the PIX config I can see the following line:fixup protocol pptp 1723.Does this mean that the PPTP protcol is enabled on our firewall?  Is this for both incoming and outgoing traffic?
 
I can see no reference to GRE 47 in the PIX config. What I should look for to see if this has been enabled or not?

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I'm having a Issue getting my VPN up from out remote site . We have a ASA5505 at the remote site and the Main office we have a  PIX-515E.. I followed this temp config I found on line but Im still not able to get the VPN UP..

This script can be used to get you started on a site to site vpn using the older Cisco PIX code. PIX running 6.3 ! ^^^^ Set ISAKMP (phase 1) parameters ^^^^^ {code]... 
 
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[code]...

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[code].....

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