nanog mailing list archives
Re: Proxy ARP detection
From: Eric Rosen <erosen () redhat com>
Date: Wed, 15 Jan 2014 19:54:14 -0500 (EST)
Cisco PIX's used to do this if the firewall had a route and saw a ARP request in that IP range it would proxy arp. ----- Original Message -----
On Jan 15, 2014, at 4:03 PM, Niels Bakker <niels=nanog () bakker net> wrote:* clay () bloomcounty org (Clay Fiske) [Thu 16 Jan 2014, 00:59 CET]:This is where theory diverges nicely from practice. In some cases the offender broadcast his reply, and guess what else? A lot of routers listen to unsolicited ARP replies.I've never seen this. Please name vendor and product, if only so other subscribers to this list can avoid doing business with them.This was some time ago, but the two I was able to dig up from that case were both Junipers. Perhaps it’s something that only happens when proxy ARP is enabled? -c
-- Eric Rosen CCIE Security #17821 Information Security Analyst Red Hat, Inc erosen () redhat com 919.890.8555 x48555 IRC erosen
Current thread:
- Re: best practice for advertising peering fabric routes, (continued)
- Re: best practice for advertising peering fabric routes Christopher Morrow (Jan 15)
- Re: best practice for advertising peering fabric routes William Herrin (Jan 15)
- Re: best practice for advertising peering fabric routes Michael Still (Jan 15)
- Re: best practice for advertising peering fabric routes Clay Fiske (Jan 15)
- Re: best practice for advertising peering fabric routes Niels Bakker (Jan 15)
- Proxy ARP detection (was re: best practice for advertising peering fabric routes) Clay Fiske (Jan 15)
- Re: Proxy ARP detection Niels Bakker (Jan 15)
- Re: Proxy ARP detection Clay Fiske (Jan 15)
- Re: Proxy ARP detection Niels Bakker (Jan 15)
- Re: Proxy ARP detection Clay Fiske (Jan 15)
- Re: Proxy ARP detection Eric Rosen (Jan 15)
- Re: Proxy ARP detection Patrick W. Gilmore (Jan 15)
- Re: Proxy ARP detection Jimmy Hess (Jan 15)
- Re: Proxy ARP detection Vlade Ristevski (Jan 16)
- Re: Proxy ARP detection Niels Bakker (Jan 16)
- Re: Proxy ARP detection Warren Bailey (Jan 16)
- Re: Proxy ARP detection Jimmy Hess (Jan 16)
- Re: Proxy ARP detection Niels Bakker (Jan 16)
- Re: Proxy ARP detection (was re: best practice for advertising peering fabric routes) ML (Jan 15)
- Re: Proxy ARP detection (was re: best practice for advertising peering fabric routes) Jimmy Hess (Jan 15)
- Re: best practice for advertising peering fabric routes Niels Bakker (Jan 15)