netdev - Re: [PATCH] tcp: fix ICMP-RTO war

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <201001271556.16156.denys@visp.net.lb>
Date:	Wed, 27 Jan 2010 15:56:16 +0200
From:	Denys Fedoryshchenko <denys@...p.net.lb>
To:	"Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>,
	Netdev <netdev@...r.kernel.org>,
	Damian Lukowski <damian@....rwth-aachen.de>,
	David Miller <davem@...emloft.net>
Subject: Re: [PATCH] tcp: fix ICMP-RTO war

On Wednesday 27 January 2010 14:36:18 you wrote:
> Unless they are for a different connection? We might have to print sk (%p)
> in all those printouts to be sure which maps to which. If a peer becomes
> unreachable, it may well have multiple connections open (this was a
> proxy, iirc?).
> 
Ok i will try to do that today.

Most probably different connections, on this proxy i have 10-15k established 
connections at peak time.

Also about estimating rtt, maybe there is something wrong in idea. Just what 
will happen if ip visible for proxy have multiple people behind? It can be 
small router for hotspot and 10-20 people behind it,  some with very large 
rtt, some with very small. 

And some of them getting disconnected (out of range from wireless, for 
example), and thats most probably why host unreachable sent... at same time 
proxy have established and running tcp connections with other people on same 
router (means for proxy same ip).

Sorry, again to Ilpo Järvinen, by default i have reply, instead of reply all.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html