[unisog] Network security police no hubs/switches/routers?

Michael Holstein michael.holstein at csuohio.edu
Mon May 23 17:56:35 GMT 2005


> #1 is security, which is apropos given the mailing list here.  Those types of
> devices enable others to more easily sniff traffic that is more secure in a
> non-extended network.

Not that it's all that hard to sniff traffic in a switched network. ARP 
is a fun protocol ;)

> #2 is operational integrity.  This is not as important in the days of
> switches as opposed to hubs, but there are definite limits on how many
> repeaters and the like that you can sustain in a collision domain, as well as
> overall network diameter.  We have also seen malfunctioning hublets and other
> devices spewing bad traffic that takes down parts of the network.  Finally,
> in the case of routers, I'm sure we've all seen rogue DHCP servers perform
> rather effective DOS actions by handing out bad IP addresses.

Hmm .. I just bought this new linksys thingie. Cool... it's got 4 LAN 
ports so I can hook one to the wall and the other 3 to my 'puters.

(Network admin) : WTF! 192.168.1.0/24 again on the 3rd floor.



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