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[CaptainStrong]

hey guys.

at my brothers college, im sure they have most ports blocked to stop file sharing and all. is there a way to see what ports are open though? i wanna direct connect with him via aim but need to know what port to use, also for transfering files and such. is there an applet i can run to find out? i didnt understand what broadbandreports.com had to offer

thanks.

 

[xsarien]

hey guys.

at my brothers college, im sure they have most ports blocked to stop file sharing and all. is there a way to see what ports are open though? i wanna direct connect with him via aim but need to know what port to use, also for transfering files and such. is there an applet i can run to find out? i didnt understand what broadbandreports.com had to offer

thanks.

Yeah, you go ahead and run a portscan on a college network. Let us know how it goes.

 

[Phoenix]

I would suggest investigating applications that do port80 tunneling. SInce its used by HTTP (web browsing/serving) port 80 is almost never blocked (though sometimes proxied). A common strategy for dealing with firewalls for a lot of the applications I write is to just use an application that listens/transmits on port80 and recreates the packets on the other side. In a lot of the mobile applications I work on, that's how I get away with not having to require the user to have socket services provided by their carrier.

It tends to be slower to tunnel through a webserver than to transmit discrete packets, but it you aren't pushing a lot of small packets around the technique works well. If all you guys REALLY want to do is share files easily - just run a copy of apache on both sides and send each other a browsable HTML index page so each of you can see what the other has. Its like the oldest way to share files, it is almost unblockable without killing other more necessary services, and it doesn't require any particular 'torrent, AIM, etc'.

The downside is that it is a VERY visible activity so if someone else browsed that site (you could password protect it), you're boned if you're putting up copyrighted works (which I don't recommend).

 

[Ferrio]

Yeah, you go ahead and run a portscan on a college network. Let us know how it goes.

Oh that gave me a good laugh.

 

[shuri]

The downside is that it is a VERY visible activity so if someone else browsed that site (you could password protect it), you're boned if you're putting up copyrighted works (which I don't recommend).

Well you can allow or deny connections based on certain ip ranges and so on with Apache so thats a solution

 

[CaptainStrong]

ah, thanks for the insight guys.

 

[Ecrofirt]

aren't there websites that do portscans?

Would the college get in a huff about that?

 

[Phoenix]

aren't there websites that do portscans?

Would the college get in a huff about that?

Instead of going through all that its better to just grab a copy of nmap and let it do all the work in stealth mode (http://www.insecure.org/nmap/) . Now I'll shut up before people start asking me why I know this