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PirateKing15

School Internet

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My friend mentioned to me recently, that at his school(it's a private school), they shut the internet off after midnight. But for some reason his instant messenger still works just fine. Can anyone explain this to me? And to me, it seems like there might be a way to bypass the internet being shut off. He has to still be getting some kind of connection for the instant messenger to be working. Correct me if I am wrong.

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Quick and dirty... blocking port 80 on the firewalls. Should kill web browsing quite fast.

Instant messengers have their own ports that they use. Now, as to why they would block just port 80 and not use a kill switch, who knows.

Does he get a custom error message, or the generic one for his browser of choice? Knowing what firewall they use would be a good start in bypassing it.

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They could also just be shutting off DNS. As long as you don't need DNS names resolved, you could still do anything. Or just configure your own DNS server and hope they don't block the DNS port too.

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Most likely all web traffic goes through a proxy, to filter out porn and whatnot. Maybe whoever implemented this killed it at the proxy not realizing, or not caring that other types of traffic weren't going through the proxy.

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I am pretty sure that he gets a regular error screen. I can get any info you guys need. I am just really curious as to how it works.

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you said that his IM still worked...which IM does he use? I am asking because I wonder if it is using TCP/IP or UDP? Perhaps they block all TCP/IP traffic?

Not sure if that is easy or possible, but I am curious as well.

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They shut the Internet off at night at the military school I went to. However, if you had a connection established and kept alive before the cutoff time, the connection would be maintained. I used this quite often to download really large files (Linux ISOs for example). From the exploring I'd done on the network, the filter software they used just prevented new connections from being established after the set time period -- but it wouldn't cut off old connections, allowing them, presumably, to finish up their work before disconnection.

I exploited this by using a proxy server on my local machine, which was set to connect to an external proxy and send keepalive packets to it, to prevent the link from going down.

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systems_glitch -- This is Alabama, I don't think they would go that far. I am sure it is something simple.

StankDawg -- He uses Pidgin. And all his IM accounts work after midnight except for the MyspaceIM.

From my experience, just about everywhere in Alabama is low on security. I doubt they would do anything too complicated.

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It doesn't matter where you live; security just depends on the people running the place. What systems_glitch said isn't complicated and makes the most sense to me.

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Well, how could he go about keeping a connection? A simple way, just to test it?

EDIT--Nevermind, Zeph told me how... ;)

Edited by L33T_j0sH
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And to me, it seems like there might be a way to bypass the internet being shut off

yeah, you can , one way is to do exactly what systems_glitch said, also some programs like ultrasurf will extend your browsing time........

I believe in your school they will be using squid.......then find out some other ip addresses (like ip address of labs where the internet traffic is allowed at midnight)...and assign the ip's to your computer and start browsing......

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Well, when he types ping at all, it automatically times out. No matter what time it is.

EDIT: Nevermind that. He was doing it wrong. He will try again tonight.

Edited by L33T_j0sH
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They could just be shutting off a primary connection and still be leaving a secondary connection on. I am assuming that this dude is using a laptop with wireless and not getting plugged into a jack. I know at my place of learning they always leave a secondary laptop only connection running even when there landline connections are off. :ninja:

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Well, he said it didn't work. I don't know if this means anything but he said that World of Warcraft works also.

n1njastr1k3forc3 -- He is on LAN. He has to sign up his mac address with the school before they will let him on the wireless internet.

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My friend just found out something that I am sure solves how this whole thing works. Somebody from the girl dorms informed him that using Foxy Proxy allows internet after midnight.

Let me know if you understand how it works now.

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