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Cisco Pix site to Site VPN

Posted on 2011-09-26
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Last Modified: 2012-05-12
I am adding a new location to an existing Cisco site to site VPN.  

We cannot get the new sites VPN tunnel up.

Can someone help?  I've attached the configs.  The main site already has another VPN connected to it. and its working fine.  I've verified the IP addresses in the config are correct.  There is Internet Access on the new site.  Just no VPN tunnel.
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Question by:mschirad
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by:mschirad
ID: 36599393
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Jody Lemoine earned 500 total points
ID: 36599591
On your main site PIX, you have the following statements:

access-list 101 permit ip 192.168.1.0 255.255.255.0 192.168.2.0 255.255.255.0
access-list 102 permit ip 192.168.1.0 255.255.255.0 192.168.3.0 255.255.255.0
nat (inside) 0 access-list 101

This will prevent traffic to your first site's 192.168.2.0/24 address space from being translated, which allows it to work properly.  You're not doing the same for your second site's 192.168.3.0/24 and so traffic to it is subject to NAT and will be coming from the wrong IP address.  Try adding the following:

access-list 100 permit ip 192.168.1.0 255.255.255.0 192.168.2.0 255.255.255.0
access-list 100 permit ip 192.168.1.0 255.255.255.0 192.168.3.0 255.255.255.0
no nat (inside) 0 access-list 101
nat (inside) 0 access-list 100

This will create a new access list covering both sites for your NAT exception rule.
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by:mschirad
ID: 36599789
yes of course!

thanks so much!
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