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Groups > comp.os.linux.networking > #2185

Re: Slowing/delaying connections when there are already many connections from that source IP

From Andrew Gideon <c182driver9@gideon.org>
Subject Re: Slowing/delaying connections when there are already many connections from that source IP
Newsgroups comp.os.linux.networking
References <nbspt.41942$Lw2.3399@fe09.iad> <ko6013$ogk$1@usenet01.boi.hp.com>
Message-ID <i7Ipt.21$JT4.9@fed01.iad> (permalink)
Organization UsenetServer - www.usenetserver.com
Date 2013-05-30 13:04 +0000

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On Wed, 29 May 2013 22:38:27 +0000, Rick Jones wrote:

> If you simply, silently drop SYN (or SYN|ACK) segments when the number
> of concurrent connections is over the limit, that will, in efect, slow
> those connections - the sender TCP will start retransmitting, presumably
> with a back-off

I'd not considered the retry/back-off part of the TCP startup sequence; 
that's a good point.  I'll see how just dropping the SYN works out.

Thanks...

	- Andrew

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Thread

Slowing/delaying connections when there are already many connections from that source IP Andrew Gideon <c182driver9@gideon.org> - 2013-05-29 18:56 +0000
  Re: Slowing/delaying connections when there are already many connections from that source IP Rick Jones <rick.jones2@hp.com> - 2013-05-29 22:38 +0000
    Re: Slowing/delaying connections when there are already many connections from that source IP Andrew Gideon <c182driver9@gideon.org> - 2013-05-30 13:04 +0000
  Re: Slowing/delaying connections when there are already many connections from that source IP aw@anhrefn.saar.de - 2013-05-30 00:21 +0200
  Re: Slowing/delaying connections when there are already many connections from that source IP Jorgen Grahn <grahn+nntp@snipabacken.se> - 2013-05-30 06:45 +0000
    Re: Slowing/delaying connections when there are already many connections from that source IP Andrew Gideon <c182driver9@gideon.org> - 2013-05-30 13:19 +0000
  Re: Slowing/delaying connections when there are already many connections from that source IP Jeff Long <long@ku.edu> - 2013-05-30 10:09 -0500
    Re: Slowing/delaying connections when there are already many connections from that source IP Andrew Gideon <c182driver9@gideon.org> - 2013-06-04 16:34 +0000

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