In the Windows Firewall, you can create rules that include IP ranges, but sadly you cannot create rules that include port ranges. This is a great pity!
So, I was asked how to set up a Windows Firewall rule that allowed one trusted host to be able to access all ports, 1-65000, on a computer (or a bunch of computers, via GPO). This is what I came up with:
for /L %%a in (1,1,65000) do call :ADDPORT %%a
goto :eof
:ADDPORT
netsh firewall add portopening protocol=TCP port=%1 name=TEST mode=ENABLE scope=CUSTOM addresses=10.0.0.2 profile=ALL
This would open every port from 1-65000 inbound to the host 10.0.0.2, for both the Domain and Private Profiles. I tested it (running as Administrator) on XP and Vista.
It is slow if you have to do a lot of ports. My informal timing has it opening about 1 port per second. 65,000 seconds is about 1084 minutes, which is a little over 18 hours.
I made a quick swipe at doing this in vbscript, and failed utterly. Some docs and examples are here, here, and here if you'd like to try!
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