RE: Cadence is completely off the net!!!

From: Dave Rich (dave_59@yahoo.com)
Date: Thu Apr 22 2004 - 16:39:53 PDT

  • Next message: Stefen Boyd: "Re: Minutes of the April 19, 2004 IEEE 1364 Working Group Meeting"

    Might also be this:
    http://www.theregister.co.uk/2004/04/22/tcpip_vuln_ignored/

    --- Michael McNamara <mac@verisity.com> wrote:
    >
    >
    > -- On Apr 22 2004 at 12:01, Kurt Baty sent a message:
    > > To: Btf@boyd.com, etf@boyd.com, ptf@boyd.com, 1364@accellera.org,
    > kurt@wsfdb.com
    > > Subject: "Cadence is completely off the net!!!"
    > > Cadence is completely off the net!!!
    > >
    > > I don't mean that they are down,
    > > I mean that they have NO ROUTE TABLE ENTREES!!!
    > >
    > >
    > > mail someone @cadence.com
    > >
    > > try to get:
    > > http://www.cadence.com/
    > >
    > >
    > > wow
    > >
    > > kurt
    >
    > Looks good now.
    >
    > I suspect they are changing their ISP.
    >
    > Looking at their start of authority record, you see:
    > % nslookup
    > ...
    > > set query=soa
    > > cadence.com
    > Server: ns.cadence.com
    > Address: 158.140.1.253
    >
    > cadence.com
    > origin = ns.cadence.com
    > mail addr = hostmaster.cadence.com
    > serial = 2004022406
    > refresh = 7200 (2H)
    > retry = 225 (225)
    > expire = 604800 (1W)
    > minimum ttl = 900 (15M)
    > cadence.com nameserver = auth00.ns.uu.NET
    > cadence.com nameserver = ns.cadence.com
    > ns.cadence.com internet address = 158.140.1.253
    > auth00.ns.uu.NET internet address = 198.6.1.65
    > >
    >
    > Key bits here is that the refresh is set to two hours, and retry to
    > 3.75 minutes, and ttl is set to just 15 minutes.
    >
    > Basically this means that the distributed servers have to keep
    > checking with ns.cadence.com to get new values for the addresses.
    >
    > More stable companies :-) like verisity set these to values in many
    > minutes or hours:
    >
    > > verisity.com
    > Server: watson.verisity.com
    > Address: 216.216.10.41
    >
    > verisity.com
    > origin = watson.verisity.com
    > mail addr = postmaster.watson.verisity.com
    > serial = 2860260816
    > refresh = 3600 (1H)
    > retry = 1200 (20M)
    > expire = 3600000 (3600000)
    > minimum ttl = 21600 (6H)
    > verisity.com nameserver = watson.verisity.com
    > verisity.com nameserver = carmel.verisity.com
    > watson.verisity.com internet address = 216.216.10.41
    > carmel.verisity.com internet address = 212.150.223.1
    >
    > >

            
                    
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