RE: Network Operators and smurf

From: (no name) (no email)
Date: Sat Apr 25 1998 - 15:55:40 EDT

>Current recipe for anti-forging with Cisco hardware:

> o Pick up CEF code (11.1(17)CC, which doesn't yet (?) exist for all
> Cisco platforms, unfortunately)

> o Configure:

> !
> ip cef switch
> ! or "ip cef distributed switch" for an RSP+VIP2 based box
> !
> interface whatever
> ip verify unicast reverse-path
> !

I don't know what exact configs are vulnerable, but don't try this
on a 7206 if you have a PA-8T with frame relay on it.

I had CEF only on PA-2T3 ports and F0/0 on the controller card and yet
all frame relay connections on multiple T1s on the PA-8T were trashed.

cscdj87169 is not resolved yet.

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