How can I check which outbound ports are open on my firewall without accessing the firewalls OS. I can use "telnet IP address port number" to access an active outbound port. But I need to check avaliable outbound ports that could be used in the future.
you can use 'nmap' to scan your fix to find the open ports.
here is the info and the link:
Nmap ("Network Mapper") is a free and open source (license) utility for network exploration
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