[c-nsp] preventing unwanted devices on the network

Scott Keoseyan scott at labyrinth.org
Sat May 31 23:01:35 EDT 2008


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802.1x

Dan Letkeman wrote:
| Hello,
|
| I'm looking for the best way to prevent unwanted wireless routers or
| other unwanted bridging devices on a network.  For example a wireless
| router with the wan port plugged in to the network or a router in
| bridging mode with dhcp off.
|
|>From other posts I have read about using dhcp snooping.  I'm wondering
| if it works when someone plugs in a router into a switch because the
| "wan" port will only request an address, the dhcp will be on the
| routers "lan" side.
|
| Also I would like to prevent unwanted static ip addresses on this
| network as well.  My current setup is a 3560 switch which has multiple
| 2960 switches connected to it.  I would like to prevent this type of
| traffic right at the edge ports.  Would an access list be the
| appropriate way to protect this?  Unfortunately port security will not
| work for us.
|
| Thanks,
| Dan.
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- --
Scott A. Keoseyan (scott at labyrinth.org)
(704) 604-3381
Homepage : http://www.labyrinth.org/homepages/scott
Blogpage : http://www.labyrinth.org/wp1
PGP Keys : http://www.labyrinth.org/homepages/scott/pgp.html
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