Enables the use of NAT-Traversal. NAT Traversal eliminates the problems that occur when establishing a VPN connection at the end points of the VPN tunnel.
SNMP ID: 2.19.16
Telnet path: /Setup/VPN
Possible values:
- On
- Off
Default: Off
Note: NAT-T can only be used with VPN connections that use ESP (Encapsulating Security Payload) for authentication. Unlike AH (Authentication Header), ESP does not consider the IP header of the data packets when determining the hash value for authentication. The hash value calculated by the receiver is therefore also equivalent to the hash value entered in the packets.
Note: If the device functions as a NAT router between the VPN end points, ensure that UDP ports 500 and 4500 are enabled in the firewall when you use NAT-T! This port is activated automatically if you use the firewall assistant in LANconfig.