[mrtg] SV: MRTG graphing stops after DoS attack

Kjetil Kvig kjetil at catchcom.com
Wed Jun 12 13:16:28 MEST 2002

Is there a way to generate an alarm when the this non-graphing state occurs?
I guess i have to find out exactly WHAT is happening before anything can be done..

I use routers.cgi to display the MRTG graphs.
Is there any specific options in routers.conf file i can try out maybe?

As it is now i have to put up a cron job with a script that kill all mrtg processes and start them again.
The server btw, is a Compaq DL380 running Redhat Linux 6.2


> >
> > I run MRTG on 40-50 Riverstone routers, and when a heavy DoS attack
> > comes over the link, MRTG completely stops graphing any 
> traffic on this
> particular router...it just displays a grey area until the 
> mrtg daemon is
> restarted.
> >
> > Is there a way to avoid this?
> > If not, i will have to put some kind of notifying on to 
> alarm me when it
> happens.

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