FG

My university tells me I can't use a router in my dorm. Is there any way they can tell?

Fresh3 days ago
Mar 15, 20264899 views
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Problem

We're behind some kind of Cisco routers, and have to connect via the Cisco NAC Agent. The tech support here at my university tell me that if I connect a router "the whole building will lose internet access." I find this really hard to believe, and I'd like to know: 1. Can they tell if I'm using a r…

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Fix for: My university tells me I can't use a router in my dorm. Is there any way they can tell?

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Adding to PulpSpy's (correct) answer, it's also possible to detect routers (NAT or not) by looking at the TTL field of outgoing IP packets. End stations usually set TTL to a known number, such as 64, 254, or a few other alternatives depending on the…

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