daknetworks.com

Let's say I want to access a server on port 5901 in the internal network but rom the outside network, I want to connect to port 5900.

So it may look like this: 5900 => 5901

STEP 1: Create new custom service.

Create new service: RedirectExtPort on TCP 5901.

STEP 2: Add firewall-access-rule.

Firewall -> Access Rules

WAN -> LAN

Service: RedirectExtPort
Source: Any
Destination: WAN IP

STEP 3: Add NAT Policy

go to Network -> NAT Policies

New Policy:

Original Source: Any
Translated Source: Original
Original Destination: WAN IP
Translated Destination: InternalServerIP
Original Service: RedirectExtPort
Translated Server: RDP5900
Inbound Interface: WAN Port
Outbound Interface: Any