Networking Question

computer?ido · Post by **computer?ido** » Tue Feb 19, 2002 11:08 pm

Heres the deal, im on a network at school with an obscene amount of bandwith, which consequently noone takes advantage of the reason being that all tcp traffic is priority based. So when i download from http or ftp i get like 1 mb/s but when i play counterstrike or use winmx i get perhaps 2 kb/s. So basically 90% of the bandwith goes to ports 80 and 21. Is there any way to circumvent this. College can get quite boring and dwnloading movies at 2 kb/s can get to be quite frusterating.
I already tried arp spoofing, and proxies over port 80. Neither worked.

Any help would be appreciated.

Thx.
Bill

Lord}{Nikon · Post by **Lord}{Nikon** » Wed Feb 20, 2002 1:32 pm

computer?ido,

What you college has probably done is noticed that alot of people have ran FTP protocalls and have chewed up a TON of bandwith and thus...have limited that bandwith to a certain degree. I'm 90% sure if you connect to an FTP server running on any port BUT 21...then you might get faster transfers.

Unless you know the Admin over your college's servers there is no way you're going to get around thier 'limitations'. Basicly they are trying to stop what you are wanting to do - take all the bandwith.

Based on the info you gave me, thats all that I can conclude - but contact me if you would like any more info or explinations.

Boston_Bob · Post by **Boston_Bob** » Fri Feb 22, 2002 11:55 am

Bill,

What was the purpose of arp spoofing? I know how this works but how did you think it was going to change the speed of your connection?

(not flaimbait, im just curious

)

computer?ido · Post by **computer?ido** » Fri Feb 22, 2002 5:43 pm

not all computers on my subnet have these restrictions, so i figured i could spoof one that did not have them. Alas it is not that simple.

Boston_Bob · Post by **Boston_Bob** » Fri Feb 22, 2002 6:15 pm

i see, i get it now, are those machines owned by the school? (that dont have restrictions)

also it sounds like they might have an application level firewall/filter running (example: even a proxy over port 80 failed, this is assuming it failed because the traffic was not pure HTTP) so what about encrypting the proxy traffic over port 80? or better yet encrypting proxy traffic over port 443? i dont see a reasonable way to determine the what kind of encryption scheme is being used over 443 (kind of the whole point of encryption

) if it is an application level firewall they cant create a rule to filter out encrypted traffic on 443 (or else SSL would not work)

So use an encrypted proxy over 443. I dont know of any offhand that do this, but if all else fails use the port forwarding capabilities of SSH to tunnel any ports from your local machine to an SSH server on port 443 on the other side of your firewall/filter.

ijust a guess, lemme know if you try it (ps- i claim no responsibility for angry IS people at your school

)