Re: [logs] Re: DDos, Mazu [was: intrusion detection and log analysis]

From: Mikael Olsson (mikael.olsson@private)
Date: Sun Nov 09 2003 - 11:12:02 PST

  • Next message: Trond Kringstad: "[logs] syslog consolidation and reports"

    Michael Batchelder wrote:
    > 
    > This is OT for loganalysis, but what's your feeling about syn
    > cookies as the defense against dos/ddos?
    
    SYN cookies help when you're being SYN flooded.
    
    The attacks that have taken down our 50Mbit/s Internet connection
    have all been pings and UDP, and nothing we can do on our end
    help, since they came at us with a rate higher than 50Mbit/s --
    the downstream is flooded no matter how much we drop on our end.
    
    What helps here is traceability and real-world law enforcement.
    Attempting to cure human problems with technical solutions is,
    as usual, a lost cause.
    
    -- 
    Mikael Olsson, Clavister AB
    Storgatan 12, Box 393, SE-891 28 ÖRNSKÖLDSVIK, Sweden
    Phone: +46 (0)660 29 92 00   Mobile: +46 (0)70 26 222 05
    Fax: +46 (0)660 122 50       WWW: http://www.clavister.com
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