Am I behind a firewall/proxy?

[mendhak]

Is there any way to tell, without asking the administrators, whether I'm behind a firewall or proxy?

[<ABX]

run a ftp server on a random port (a not common one Like 80,25,20,23) and try to connect to it from another computer outside the network. if it doesnt work, your prolly behind a firewall or proxy.

Note: this isnt a sure way of checking but it should work.

EDIT: N/M im a idiot because you couldnt access the port from outside your network unless your computer had a global IP address.

[mendhak]

Well... I'll wait for the non-idiotic answer then

Meanwhile, another question: what sort of an effect does a network firewall/proxy have on MSN messenger, when I'm sending and receiving files?

Nowadays, everytime I try to send a file in MSN Messenger, I'll get the message that it was unable to... possibly due to firewall?

[Pirate]

See if this would be helpful ...http://www.ridgewaysystems.com/Trial...x?type=pclient

[mendhak]

Originally posted by Pirate
See if this would be helpful ...http://www.ridgewaysystems.com/Trial...x?type=pclient

The test was successful, which implies...

a) I'm not behind a firewall?
b) My network's not behind a firewall?

[<ABX]

That means that the ports that there software uses are not blocked but there still could be a firewall

[mendhak]

Alright.

Thanks everyone.

[demotivater]

These days it's pretty safe to assume that in a university or work environment that your are indeed behind a firewall. Unless of course, your admins are ****ty.