Inbound port forwarding, also known as Inbound Access for Peplink Balance, allows internal hosts, such as web server and mail server etc., behind Peplink Balance to be accessed from the Internet.
Here are two scenarios for configuring inbound port forwarding. Both are possible using the Peplink Balance, while only the “NAT Mode” configuration is applicable to FusionHub.
Configuring inbound Port Forwarding with Peplink Balance Deployed in Drop-In Mode
When there is a firewall placed on the LAN side of the Peplink Balance, the inbound traffic should be forwarded to the firewall, not the LAN client itself.
The firewall located on the LAN side of Peplink should already have inbound port forwarding configured to translate the inbound traffic as follows:
210.10.10.10 on TCP port 80 (secondary IP on firewall) will be translated to 192.168.1.10 on TCP port 80
In Drop-in Mode, inbound traffic to 210.10.10.10 through WAN1 on Peplink Balance will pass through without any IP changes. Inbound traffic going through WAN2 or WAN3 should have destination IP translated as follows:
<li>WAN2: 22.2.2.2 on TCP port 80 will be translated to 210.10.10.10 on TCP port 80</li>
<li>WAN3: 33.3.3.2 on TCP port 80 will be translated to 210.10.10.10 on TCP port 80 <img class="alignnone size-full wp-image-635" alt="inbound_access_drop-in2" src='//discourse-cloud-file-uploads.s3.dualstack.us-west-2.amazonaws.com/business5/uploads/peplink/original/2X/3/332a6267d381b61993a5d6ad056eefd218d8192b.png' width="600" height="409" /></li>
Setting Up Inbound Port Forwarding on Peplink Balance:
To setup inbound port forwarding on the Web Admin Interface, go to Network > Inbound Access > Servers, click on Add Server to define a new server.
Then, go to Network > Inbound Access > Services, click on Add Service to add a new service.
Click Save and Apply Changes to activate this new setting.
Configuring inbound Port Forwarding with Peplink Balance Deployed in NAT Mode (Non-Drop-In Mode)
Inbound traffic through WAN1, WAN2 or WAN3 should have destination IP translated as follow:
- WAN1: 210.10.10.2 on TCP port 80 will be translated to 192.168.1.10 on TCP port 80
- WAN2: 22.2.2.2 on TCP port 80 will be translated to 192.168.1.10 on TCP port 80
- WAN3: 33.3.3.2 on TCP port 80 will be translated to 192.168.1.10 on TCP port 80
Setting up Inbound Port Forwarding on Peplink Balance:
To setup inbound port forwarding on the Web Admin Interface, go to Network > Inbound Access > Servers, click on Add Server to define a new server.
Then, go to Network > Inbound Access > Services, click on Add Service to add a new service.
Click Save and Apply Changes to activate this new setting.
With the new settings, inbound traffic for the specific protocol from the selected IP address(es) will be forwarded to the designated server. If more than one server is selected, Peplink Balance will distribute the requests to servers according to their assigned weights.
