Mark:

Thanks for your advice, and let me tell you that we do have a firewall, but due to this "tests" i have it off. I also have tryied pinging the remote pc and i reach it, but when i try telenet things doesn't work. I really don't know/understand what is happening. Please if you have any other idea or know about any documentation i can read i'm truly interested.

If is not an abuse, and you have some minutes free, here is my today's IP 81.193.2.253.

Thanks for all your precious help.

best regards

Estuardo