Messages in this thread | | | Subject | Re: SYN cookie reliability | Date | Tue, 14 Apr 1998 16:58:17 +0300 (EEST) | From | Matti Aarnio <> |
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> SYN cookies do not seem to work on 2.1.95/96. I have not checked previous > kernels for this problem. > > I set /proc/sys/net/ipv4/tcp_syncookies to 1. I enabled SYN cookies. I > used synk on myself. The flooding gets through.
Of course it gets thru, but is the system (given TCP port) unusable for simultaneous non-flood usage ?
Say you flood your TELNET port, can you still do: telnet your.local.host while the SYNK is hammering ? If you can't, then SYN-cookies don't work.
> Attached are the program I used an the output of netstat after using it. > IMHO, this is not a good thing. In fact, I feel you should set SYN cookies > to the way they were in 2.0.33. At least they worked back then. > > | Fenestrae delendae sunt. | > | smilax@mindmeld.dyn.ml.org |
/Matti Aarnio <matti.aarnio@tele.fi>
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