Another option is to grant authentication using reverse MAC lookups. We are doing that. This won't stop some other DHCP server on your network from leasing IPs, tho. Fortunately, we've never had that problem. We also block DHCP servers on our canopy access points.
----- Original Message ----- From: Dave To: [email protected] Sent: Wednesday, March 11, 2015 9:44 AM Subject: Re: [AFMUG] DHCP backfeed Almost forgot make sure the upstream check box is checked and downstream unchecked On 03/11/2015 09:05 AM, Brett A Mansfield wrote: > I’m curious what everyone does to prevent a customer from pulling more than one IP address without using PPPoE, and how do you prevent their router from backfeeding it’s DCHP server onto your network if they plug in the cable to a LAN port instead of the WAN port? > > Thank you, > Brett A Mansfield > Silver Lake Internet
