Re: Code red II crashes cisco 678

From: Sam (samat_private)
Date: Mon Aug 06 2001 - 08:02:43 PDT

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    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.
    
    -Sam
    
    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
    > wan0-0
    > 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." <georgerat_private>
    > 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
    > 2.4.2
    > > 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,
    > it's
    > > working here.
    > >
    > > Geo.
    > >
    > >
    > >
    > >
    >
    >
    >
    



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