I'm trying to test which outgoing ports are allowed through a firewall. At the moment I can do this for TCP by port scanning
portquiz.net (which is a server with all TCP ports open) from inside however this won’t work for UDP.
My setup is as follows:
Me (my device on local network) <-> NAT/Firewall <-> IPv4 Internet
So my question is, how can I test a firewall between me and the Internet to see which outgoing UDP ports I am able to connect to and use successfully?
For clarification I'm wanting to test every port (not any particular port) and returning a list of the ports that can successfully get through.