Should routers send redirects by default?

Ricky Beam jfbeam at
Sat Aug 21 01:09:43 UTC 2010

On Fri, 20 Aug 2010 20:08:34 -0400, Brandon Ross <bross at> wrote:
> Okay, I'll ask again.  Exactly how does disabling ICMP redirects on my  
> router prevent traffic from being intercepted?

It stops *one vector* of MITM attack.  If a router honors redirects (and  
it never should), an evil host can intercept traffic of hosts that aren't  
on the local network.

This is 5000% beyond the scope of the original question, btw.


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