How to setup Asterisk/FreePBX behind NAT

This HOWTO assumes that your FreePBX system is sitting behind a NATed firewall with no direct connection to the outside world and it is NOT in the DMZ zone. If you have your system facing outside, or have used Mapped IP addresses or other techniques, then it is assumed that you have adequate knowledge to interpret these instructions and also assure that you have properly secured your installation.

The three key considerations in setting up remote extensions are:

Playstation 3 Firewall Port Configuration

Original Article available here:

If you are able to connect to the Internet but cannot get into Sony Computer Entertainment Europe's (SCEE) game servers or network, it may be a firewall issue. Here are the TCP and UDP Port numbers you will need to connect to SCEE game servers. If you need port numbers for games published by other companies, you will need to contact them directly for additional information.

Fortigate Firewall Policy Debug Procedures

Using diagnose debug flow to show traffic hitting a policy

You can use the diagnose debug flow command to show packet flow through the FortiGate unit. As packets are received you can view debug messages to show how the FortiGate unit processes them. The following command sequence displays packet flow for packets with IP address
The command output is extracted from actual command output and shows what happens after one packet is received:
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