USER MANUAL
Peplink Balance Series
12.2 Peplink Balance Behind NAT Router
The Peplink Balance supports establishing SpeedFusion
TM
over WAN connections which are behind a
NAT (Network Address Translation) router.
To be able for a WAN connection behind a NAT router to accept VPN connections, you can configure the
NAT router in front of the WAN connection to inbound port forward TCP port 32015 to the Peplink
Balance.
If one or more WAN connections on Unit A can accept VPN connections (by means of port forwarding or
not) while none of the WAN connections on the peer Unit B can do so, you should put all public IP
addresses or host names of the Unit A to the Unit B’s RemoteIP Addresses / Host Namesfield. Leave
the field in Unit A blank. With such setting, SpeedFusion
TM
connection can be set up and all WAN
connections on both sides will be utilized.
For example, see the following diagram:
One of the WANs of Balance A is non-NAT’d (212.1.1.1). The rest of the WANs on Balance A and all
WANs on Balance B are NAT’d. In such case, the Peer IP Addresses / Host Names field in Balance B
should be filled with all of the Balance A’s host names or public IP addresses (i.e. 212.1.1.1, 212.2.2.2
and 212.3.3.3), and the field in Balance A can be left blank. The two NAT routers on WAN1 and WAN3 of
Balance A should inbound port forward TCP port 32015 to the Balance A so that all WANs would be
utilized to establish VPN.
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