FortiGate FG60 and outbound NAT

Hello Peter,

This is the right way to do this. But there are some limitations with this solution. In order to maintain strict source-port policy you need a pool.

If you have enough outside IP addresses you can do a Virtual IP instead of strict NAT'ing.

Hello Peter,

I found this in the online documentation in the firewall: Some network configurations do not operate correctly if a NAT policy translates the source port of packets used by the connection. NAT translates source ports to keep track of connections for a particular service. Select fixed port for NAT policies to prevent source port translation. However, selecting fixed port means that only one connection can be supported through the firewall for this service. To be able to support multiple connections, add an IP pool to the destination interface, and then select dynamic IP pool in the policy. The firewall randomly selects an IP address from the IP pool and assigns it to each connection. In this case the number of connections that the firewall can support is limited by the number of IP addresses in the IP pool.