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From: Sam (samneuroflux.com)
Date: Mon Aug 06 2001 - 10:02:43 CDT
While I haven't had a chance to try and reproduce this on my 675 running
CBOS 2.4.2, I do have a filter put in place that blocks access to port 80
on the modem only. You might try using the 'set filter' command that's
part of CBOS.
Placing a filter on a IP that is dynamic tends to be a pain, but, it will
at least keep your modem from crashing.
On Mon, 6 Aug 2001, JAX wrote:
> Hi Geo .
> Thanx for the advice but it's still crashing. I even changed the web
> port to 81 , they say it's helping
> but it did not help me . My Cbos still looses the ppp conection :
> 25 000:00:42:48 PPP Info PPP Termination Acknowledgement on
> 26 000:00:42:48 PPP Info PPP Down Event on wan0-0
> Any ideea where this is comming from ?
> George Sas
> ----- Original Message -----
> From: "Geo." <georgernls.net>
> Sent: Monday, August 06, 2001 4:43 AM
> Subject: Code red II crashes cisco 678
> > All day I've had customers calling with cisco 678 routers running cbos
> > with the web interface disabled. Seems their routers have been crashing.
> > We traced this back to the code red worm. For some reason even with web
> > disabled on these routers port 80 remains open. Simply running a port scan
> > and cutting off the connection is enough to crash the router. Locks up
> > solid.
> > I also found a solution, by doing a
> > set web remote ipaddress
> > where ipaddress is one of their internal IP's you can prevent outside
> > addresses from being able to crash the router.
> > Just a heads up guys, if you are seeing 678's crashing, give it a try,
> > working here.
> > Geo.