NB3700 User Manual 3.8
Administration
This page can be used to enable/disable IPsec, you may also specify whether NAT-
Traversal should be used.
NAT-Traversal is mainly used for connections which traverse a path where a router
modifies the IP address/port of packets. It encapsulates packets in UDP and therefore
requires a slight overhead which has to be taken into account when running over small-
sized MTU interfaces.
Please note that running NAT-Traversal makes IKE using UDP port 4500 rather than
500 which has to be taken into account when setting up firewall rules.
Configuration
Figure 5.32.: IPsec Configuration
General
For setting up the tunnel you will have to configure the following parameters first:
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