03-27-2006 07:21 AM - edited 02-21-2020 02:20 PM
I have a central 3000 Concentrator connected to 2 private LANs. It sits behind an Internet facing PIX which is using NAT to NAT the Concentrators outside IP address to a Public address.
The Concentrator is to use an IPSEC VPN to a remote PIX.
Do I have to check the NAT-T option in the Concentrator LAN-to-LAN config ?
Do I have to configure NAT-T on the remote PIX ?, if so how is this done ?
regards
07-21-2006 11:38 AM
Yes turn it on for the CVPN3K, It wont hurt anyway.
For the pix the command is "isakmp nat-traversal"
Be sure to allow UDP 4500 into the outside interface of the pix.
07-21-2006 02:12 PM
Hello,
You don't need to enable Nat-T for 1-to-1 Nat situations. It's used when Patting is configured. However, enabling Nat-T doesn't hurt.
Here is a link on Nat-T
http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide09186a0080110bca.html
Hope that helps! If so, please rate.
Thanks
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