A C C E S S 2 4 1 - F X O / 2 4 1 / 2 1 1 / 2 1 1 N V O I P G A T E W A Y U S E R G U I D E
MN100129 Rev E
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Figure 14: Port Forwarding Configuration Page
2. Enter an allowed port range (do not use any of the port numbers that are specified in the
Rese rved Ports
list), and specify the low byte number of the destination address in decimal
notation.
3. Click
on
Add
.
4. Repeat for additional port forwarding associations as required. Up to 10 devices can be
defined.
5. Click
Save NAPT Settings
.
Enabling the Network Address Translator (NAT)
The IPSec NAT Traverse feature supports IPSec VPN passing through NAT.
NOTE
Users with NAT-T (UDP tunnel for VPN traffic) should
not
enable this feature. This
option is disabled by default.
The objective of the Network Address Translator, NAT, is to provide functionality as if the private
network had globally unique addresses and the NAT device was not present. Basic NAT allows a
one-to-one mapping between one private address and one public address. In its simplest
