Use NetCat and a friend on another network!

set NetCat to listen on the ports in question and run a bat file upon a connection being made.

nc -l -p1214 -esuccess.bat

success.bat
--------------
@echo .
@echo .
@echo .
@echo success!
@echo .
@echo .
@echo .
pause
--------------

from the other computer have your friend run NetCat like this:

nc -vv -n xxx.xx.x.xxx 1214

where xxx = your IP address

if s/he can make the connection this will be displayed:

.
.
.
success!
.
.
.

C:\>pause
Press any key to continue . . .

sent 2, rcvd 77: NOTSOCK

if your friend dosn't get this message the port can't be reached