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| Subject: | Re: Tool for Identifying Rogue Linksys Routers |
|---|---|
| Date: | Fri, 26 Aug 2005 09:31:45 -0400 |
Is there a scanning tool out there that can determine if there are unauthorized Linksys (type) routers in a specific VLAN?
All linksys MACs will have an address with one of these prefixes:
00045A The Linksys Group,
000625 The Linksys Group, In
000C41 The Linksys Group, In
000F66 Cisco-Linksys
001217 Cisco-Linksys, LLC
001310 Cisco-Linksys, LLC
e.g.
00:04:5A:xx:xx:xx
Plug a laptop into any worrisome network segments and look for a linksys
MAC address. If the linksys routers talk IPv6:
ping6 -w ff02:1%fxp0 (or %eth0 or whatever your interface is)
Otherwise do a broadcast ping, a ping sweep, or whatever will tickle a
linksys router.
(friendly reminder: the host's MAC address will not be preserved if the
packet goes through a router)
.mike
frantzen@(nfr.com | cvs.openbsd.org | w4g.org)
PGP: CC A4 E2 E8 0C F8 42 F0 BC 26 85 5B 6F 9E ED 28
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