Well. I got an answer to my problem. About a year ago, my adsl provider
blocked about all reserved ports, and thats why I can't use'em. Although
I told you before that they were unblocked by the ISP. Then, I fall on
another problem: The work's firewall! So, I'll need to get a list of
unblocked
Wow. Sounds like you're dealing with some mighty unreasonable people here...
Frankly, the first thing that I'd do is look for a new ISP! (And maybe a new
employer, while I was at it.)
Assuming those aren't options:
0) Did you try port 443? That's HTTPS, which many admins seem to forget
