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Sniffer sniffing

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sergio503

MIS
Mar 2, 2002
15
US
if there a way to find out, if someone's sniffing your network?
 
most sniffing is passive so it's hard to trace. if you suspect a particular machine then you could use something like (for windoze).

if you are on a switched LAN it can be harder to sniff without a trace tho as a sniffer needs a way to fool the switch in to sending it packets (ARP poisoning). if you download ettercap and run it with -c you can check to see if there's anything obvious going on. this can take a while on a large network. (arpwatch is also good)

ettercap's main purpose is to sniff networks itself so this may help you to understand what a sniffer could be getting.
 
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