Segment failed SYNCOOKIE?
Abdullah Ibn Hamad Al-Marri
almarrie at gmail.com
Sat May 26 23:28:48 UTC 2007
On 5/27/07, Steve Kargl <sgk at troutmask.apl.washington.edu> wrote:
> On Sat, May 26, 2007 at 10:45:38PM +0300, Abdullah Ibn Hamad Al-Marri wrote:
> > On 5/26/07, Steve Kargl <sgk at troutmask.apl.washington.edu> wrote:
> > >Anyone have ideas on how to cure
> > >
> > >May 25 16:20:03 node13 kernel: TCP: [192.168.0.15]:53815 to
> > >[192.168.0.13]:50992 tcpflags 0x11<FIN,ACK>; syncache_expand:
> > >Segment failed SYNCOOKIE authentication
> > >
> > >The hardware and kernel on 192.168.0.15 and 192.168.0.13
> > >are identical.
> > >
> > >--
> > >Steve
> > 7.0-CURRENT FreeBSD 7.0-CURRENT #0: Sat May 26 04:25:29 GMT 2007
> > I got the same problem and my sever paniced today.
> > TCP: [22.214.171.124]:54686 to [IP removed for security reasons]:59999
> > tcpflags 0x18<PUSH,ACK>; syncache_expand: Segment failed SYNCOOKIE
> > authentication
> > Anyone working on this now?
> Fortunately for me, the porblem appears on a cluster that
> sits behind a firewall or two, so I can turn syncookie off
> via net.inet.tcp.syncookies.
Could I turn it off in my box till this get sorted out?
-Abdullah Ibn Hamad Al-Marri
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