Check for open outbound ports

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.

I hope this makes sense.

Who is Participating?
kanlueConnect With a Mentor Commented:
Hi Brian,

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 or security auditing.

hope it helps.

bmcdowell540Author Commented:
Thanks, this is exactly what I was looking for.
All Courses

From novice to tech pro — start learning today.