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
| ||
|
Date: Wed, 28 Apr 2010 16:50:16 +0100 From: John Haxby <john.haxby@...cle.com> To: Jan Engelhardt <jengelh@...ozas.de> CC: Patrick McHardy <kaber@...sh.net>, Netfilter Developer Mailing List <netfilter-devel@...r.kernel.org>, Linux Netdev List <netdev@...r.kernel.org> Subject: Re: [PATCH 1/2] netfilter: xtables: inclusion of xt_SYSRQ On 28/04/10 16:03, Jan Engelhardt wrote: > On Wednesday 2010-04-28 16:54, John Haxby wrote: > >> use-case I see -- the one I see is where the sys admins used to have a "crash >> trolley" which was a console and PS/2 keyboard which they could plug into a >> machine to get some information, but as many rack machines no longer have >> anything PS/2 and USB hot plug is unlikely to work on a sick machine >> > Oh I can tell you stories... sometimes it's so dead in the water that > the console unblanking would not work any more, rendering even any PS/2 > useless. Stupid southbridge chipsets blowing up DMA :-) > There's no hope in that case :-) Just take the machine out and give it a decent burial. On the other hand it's not uncommon to see reports that a machine has "hung totally" that include output from ping to show that it hasn't. Actually it's amazingly common to see this. And in just this situation xt_SYSRQ is still quite likely to work. jch -- 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
Powered by blists - more mailing lists