Security Incidents mailing list archives

Smurf/broadcast "pings"


From: dennisd () PARAGONTECH COM (Dennis DeDonatis)
Date: Wed, 5 Apr 2000 08:52:34 -0400


When I asked Cisco about my PIX firewall responding to pings to
the broadcast address on its internal and external interfaces, the
following is their response:

 I do not have your pix configuration attached in the case. If you are
 atttempting to ping the broadcast address, which is the broadcast for
 the outside interface of the pix, the pix  outside interface will
 respond to a broadcast- as will any normal network device. That is
 the normal behavior of the outside interface of the pix. There is no
 way to disable this feature at this present time. This is not
 considered a defect, this is the normal behavior.

Does anyone else see this as a problem to have a security device
act as a SMURF amplifier, or am I just nuts?

Being nuts is a good possibility, but I thought I'd ask you guys
before I assumed I was nuts. :)

Thanks,

Dennis


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