Vpn Tunnel Nat Traversal

What is the purpose of using nat t feature.

Vpn tunnel nat traversal. Enter a tunnel name. Click add under vpn tunnels. This is also the recommended method and will eliminate the use and need of nat traversal.

Created on 09 26 18 13 47 pm last modified 02 07 19 23 45 pm. These ports are udp port 4500 used for nat traversal udp port 500 used for ike and ip protocol 50 esp. Under vpn tunnels click enable vpn service to start the vpn service on the cradlepoint.

Nat traversal if enabled automatically detects if network address translation nat is being performed between the two vpn tunnel endpoints since this in between nat can interfere with ipsec esp traffic also some routers that may exist between the vpn peers might be programmed to block ipsec pass through or have been programmed to block ip 50 esp. Nat or pat works by translating a local address or addresses to a public address or several public addresses. Nat traversal nat t is a feature that allows ipsec traffic to traverse through nat or pat points without the incompatibilities that would normally arise.

Nat t is an ike phase 1 algorithm that is used when trying to establish a ipsec vpn between two gateway devices where there is a nat device in front of one of the gateway devices or both the gateway devices. Click add under vpn tunnels. Ipsec vpn tunnel with nat traversal.

For help with logging in please click here. One access list is used to exempt traffic that is destined for the vpn tunnel from the nat process. Device management initial configuration installation qos zone and dos protection resolution.

In windows xp nat traversal is enabled by default but in windows xp with service pack 2 it has been disabled by default for the case when the vpn server is also behind a nat device because of a. The other access list defines what traffic to encrypt b e sure that you have configured all of the access lists necessary to complete your ipsec vpn configuration and that those access lists define the correct traffic. To overcome this problem nat t or nat traversal was developed.