- Roundtable - muug.ca

BruXy: Housenka – a game just in BASH
by Adam Thompson 09 Feb '13

09 Feb '13

http://bruxy.regnet.cz/web/linux/EN/housenka-bash-game/ Who says shell scripting has to be terribly painful? The code is actually quite readable. I especially like the use of the subshell to trigger SIGALRM, I would never have thought of that myself. (Thanks to Hack A Day) -Adam

2 2

Re: [RndTbl] Intel ethernet - h/w remote DoS exploit!
by Adam Thompson 08 Feb '13

08 Feb '13

In theory (I haven't tested it yet) it is remotely exploitable across routers. His *test* does require you to be on the same subnet. -Adam Trevor Cordes <trevor(a)tecnopolis.ca> wrote: >On 2013-02-06 Adam Thompson wrote: >> This guy explains it better than I can, but the meat of it is that a >> large number of Intel Ethernet controllers in the field are >> susceptible to a firmware bug that can shut down the Ethernet port >> remotely. > >Kind of scary. I have countless Intel NICs out in the field. Many are >ineternet-facing. Not sure if any are the 82574L, I'll need to check. > >Now the question is, is this remotely exploitable via the internet? >The secondary page: >http://www.kriskinc.com/intel-pod >Says "you'll need to be on the same ethernet segment. No routers or >VLAN" in between. So does that mean that this can't be triggered by >someone in China across to our Shaw/MTS modem connections? > >Bugs like this are goofy, and I'd hope that if it is remotely >exploitable that Intel makes a fix widely (and easily) available (and >known). > >Anyone tested it yet? I would offer some boxes as test recipients if >someone has. >_______________________________________________ >Roundtable mailing list >Roundtable(a)muug.mb.ca >http://www.muug.mb.ca/mailman/listinfo/roundtable

1 0

Intel ethernet - h/w remote DoS exploit!
by Adam Thompson 08 Feb '13

08 Feb '13

This guy explains it better than I can, but the meat of it is that a large number of Intel Ethernet controllers in the field are susceptible to a firmware bug that can shut down the Ethernet port remotely. http://blog.krisk.org/2013/02/packets-of-death.html Wow. Just, wow. Meanwhile, Broadcom controllers have their own persistent bugs. Whose Ethernet chipsets can you rely on now?!? -Adam Thompson athompso(a)athompso.net <mailto:athompso@athompso.net>

2 1

MUUG Meeting, Feb 12, 7:30pm -- System Call Tracing
by gedetil＠cs.umanitoba.ca 05 Feb '13

05 Feb '13

The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting on Tuesday, February 12. The meeting topic for this month is as follows: System Call Tracing This month's presentation will feature Adam Thompson, who will show how to profile and troubleshoot UNIX processes without needing access to source code, through the use of system-call tracing. Learn where, when, why (and for a few of these, how) to use dtrace, dtruss, ftrace, ktrace/kdump, ltrace, LTTng, par, ProbeVue, ptrace, strace, System Tap, tusc, trace, and truss to find out exactly what that troublesome program is doing behind the scenes. The group holds its general meetings at 7:30pm on the second Tuesday of every month from September to June. (There are no meetings in July and August.) Meetings are open to the general public; you don't have to be a MUUG member to attend. ********************************************************************** Please note our *NEW* meeting location: Room 1L08, Lockhart Hall, University of Winnipeg, entrance on Ellice Ave. between Spence St. and Balmoral St. Parking is available on the surrounding streets and in the lots on nearby streets. Look for signage once you're at the building, or ask a security guard. ********************************************************************** For more information about MUUG, and its monthly meetings, check out their Web server: http://www.muug.mb.ca/ Help us promote this month's meeting, by putting this poster up on your workplace bulletin board or other suitable public message board: http://www.muug.mb.ca/meetings/MUUGmeeting.pdf -- Gilbert E. Detillieux E-mail: <gedetil(a)muug.mb.ca> Manitoba UNIX User Group Web: http://www.muug.mb.ca/ PO Box 130 St-Boniface Phone: (204)474-8161 Winnipeg MB CANADA R2H 3B4 Fax: (204)474-7609

1 0

UPS batteries
by Kevin McGregor 04 Feb '13

04 Feb '13

Hey knowledgeable geek people: Where's a good place to get replacement UPS batteries? I need 1 or 2 12V 9Ah batteries. Is there any place open on the weekend that sells these? Kevin

8 10

Awwwwww. Raspberry Pi?
by Kevin McGregor 31 Jan '13

31 Jan '13

The "Awwwwwww" part: I think my SheevaPlug is dead. It stopped responding to SSH (or, well, ping), and when I tried connecting via the funky USB/serial port, my PC doesn't even detect that the SheevaPlug is plugged in, let alone attempt a connection via PuTTY. Note: the power light comes on steady, as do both the green and amber lights on the Ethernet port. So, what are my options? 1. Maybe it's the power supply. These ones are known for going bad. Anyone want to try to fix it? Hey -- that would be a cool presentation: Fix a SheevaPlug PS in real-time and see if we can get the thing to boot! Okay, maybe not. 2. Buy another SheevaPlug? Too expensive for my budget. 3. Buy a Raspberry Pi? Can you get them locally? Or order them online from a reputable Canadian supplier? Discuss.

4 5

Hard drives
by Kevin McGregor 30 Jan '13

30 Jan '13

I need to replace my (degraded mode :-( ) 2 TB RAID 5 array ASAP. I'd like ~3 TB of usable space and RAID 1 is preferred over RAID 5/6. Would anyone like to suggest replacement drives? Kevin

6 11

Small Linux distro?
by Kevin McGregor 30 Jan '13

30 Jan '13

I have a Pentium III 1 GHz (?) laptop with 512 MB (?) RAM and a 80 GB (?) hard drive, 1024x768 display. Which distro would run half-decently on this, with GUI/desktop?

3 2

Grep supports Perl regexp! Who knew?
by Adam Thompson 29 Jan '13

29 Jan '13

Command Line Magic (@climagic) tweeted at 11:58 AM on Wed, Jan 09, 2013: grep -o -P "(?<=CRON\[)\d+" /var/log/syslog # GNU grep supports perl regex expressions. This gives only the PID on CRON lines in syslog. (https://twitter.com/climagic/status/289068621362241537) _Adam

3 2

Check Point SBX-166LHGE-2
by Kevin McGregor 24 Jan '13

24 Jan '13

Is there anything useful that can be done with this device? It has no wireless; it's just a wired router in a nice little orange and blue metal box. Come to think of it, you might be able to fit a Raspberry Pi in it! Anyone want one or several? Kevin

3 2