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2answers
61 views

Unable to locate DHCP Server …

I am supporting a mixed Mac OSX and Windows environment. There is a rogue DHCP Server which seems to be providing the ip-addresses to Mac systems on the network. I have used both ZenMap and Wireshark ...
10
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2answers
273 views

DNSChanger Malware / Rogue DNS - “Internet Doomsday” July 9

Back in late 2011 the FBI dismantled a large and sophisticated internet fraud ring behind the DNSChanger virus/malware. Part of this malware involved directing victim's DNS requests to rogue servers ...
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8answers
3k views

What equipment do real ISP's use? [closed]

In a dormitory of 550 residents, people often mistakenly set up DHCP servers for the whole network by plugging in their private Wi-Fi routers wrongly. Also recently, someone mistakenly configured ...
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2answers
7k views

Finding (and stopping!) Rogue Devices from HP Procurve

We seem to have a problem with rogue devices on our network. From DHCP (on Win2003), I can see names of devices that are clearly not ours. From the name, I suspect it's a wireless AP (WGR614 looks ...
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11answers
96k views

How do I find if there is a rogue DHCP server on my Network?

What's the best approach towards determining if I have a rogue DHCP server inside my network? I'm wondering how most admins approach these kinds of problems. I found "DHCP Probe" ...
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7answers
9k views

How to detect rogue WIFI routers on a network?

My client recently changed their network policy so now all WIFI routers are disallowed from the network. They said they would be running some scans and that they would be able to find "rogue" WIFI ...