Dynamic ARP Inspections on Wifi Routers?

[Stanko Jankovic]

Is Dynamic ARP inspection possible to be done on wifi routers? I'm asking because I can't find any model with that feature. I would especially be interested in some cheaper models for home or small business use (maybe Linksys).

[George Stefanick · Accepted solution]

You could be better served posting this on the SOHO forum. Speaking to enterprise gear like the cisco WLC yes.

DAI for Wireless Access

The WLC protects against MIM attacks by performing a similar function as DAI on the WLC itself. DAI should not be enabled on the access switch for those VLANs connecting directly to the WLCs because the WLC uses GARP to support Layer 3 client roaming.

It is possible to enable DAI for each VLAN configured on a trunk between a FlexConnect and access point. Therefore, DAI is useful in wireless deployments where multiple SSIDs/VLANs exist on an FlexConnect. However, in an FlexConnect WLC deployment, there are two topologies that impact the effectiveness of the DAI feature. Both topologies assume that the attacker is associated to a FlexConnect WLC and is Layer 2-adjacent to the targets:

http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/emob73dg/emob73/ch4_Secu.html#pgfId-1019449