KCLUG

kclug@kclug.org

5 participants
3240 discussions

RE: chroot breakout (was: Xen 2.0 Virtual Machine)
by Brian Densmore 08 Nov '04

08 Nov '04

-----Original Message----- > From: Garrett Goebel > >> Have you tried to just chroot into another one? > For _a_ test environment, that's fine. But not for > running multiple simultaneous test environments, > or giving away root accounts. Are you saying that you can't open up multiple CLIs and run chroot in as many simultaneous instances as memory and diskspace allow? [somewhat OT: ] Also if one can break out of a chroot environment then they have the skill to own the machine anyway. You need to be able to find and use a security flaw on the machine that would give you root access and have access inside of the chrooted environment to a compiler or perl interpreter. So the fact that one could own a machine from inside a chroot environment doesn't increase the possibility that someone could get root access. Although what that has to do with wanting to run a VM, which is what this thread is about, eludes me. In order to run a VM a user would need an account on your box, and if they are going to crack your system and have the knowledge to break out of a chrooted environment, then they can own your box from their user account.

1 0

RE: Xen 2.0 Virtual Machine
by Brian Densmore 08 Nov '04

08 Nov '04

> -----Original Message----- > From: jeremy(a)linuxwebguy.com > > ... I'd like to be able to use > linux test > environments without having to reboot. > Isn't that what chroot is for?

1 0

Re: Xen 2.0 Virtual Machine
by Brian Kelsay 08 Nov '04

08 Nov '04

Excuse me if I haven't kept up, but UML is Unified Modeling Language. Correct? I fail to see how a relative of XML and SGML can be helpful in this situation. http://www.uml.org/ http://www.google.com/search?hl=en&q=UML&btnG=Google+Search Are you possibly referring to User-Mode Linux? That is the only thing that comes close to the discussion at hand. http://user-mode-linux.sourceforge.net/ Not until I found that page did your post make sense. Brian Kelsay >>> David Nicol <davidnicol> 11/06/04 10:26PM >>> Isn't UML the preferred way to do that? On Fri, 05 Nov 2004 14:45:15 -0600, Thomas Bruno <crweb@> wrote: > It would be a better solution per cost, if all you wanted was to run > linux on linux.

2 1

chroot breakout (was: Xen 2.0 Virtual Machine)
by Garrett Goebel 08 Nov '04

08 Nov '04

Brian Kelsay wrote: >jeremy(a)linuxwebguy.com wrote: >> On Sat, Nov 06, 2004 at 10:26:55PM -0600, David Nicol wrote: >> >>>Isn't UML the preferred way to do that? >> >> >> Have you tried to set UML up? =) Yes. As long as you follow the docs and use the kosher kernel builds it isn't too painful. Time intensive, but not painful... >> I really liked VMware, but didn't seem to be very fast. I'm >> interested in trying out this Xen software. I'd like to be able to >> use linux test environments without having to reboot. >> > >Have you tried to just chroot into another one? For _a_ test environment, that's fine. But not for running multiple simultaneous test environments, or giving away root accounts. http://www.bpfh.net/simes/computing/chroot-break.html > To break out of a chroot()ed area, a program should do the following: > > o Create a temporary directory in its current working directory > o Open the current working directory > > Note: only required if chroot() changes the calling program's working > directory. > o Change the root directory of the process to the temporary directory > using chroot(). > o Use fchdir() with the file descriptor of the opened directory to > move the current working directory outside the chroot()ed area. > > Note: only required if chroot() changes the calling program's working > directory. > o Perform chdir("..") calls many times to move the current working > directory into the real root directory. > o Change the root directory of the process to the current working > directory, the real root directory, using chroot(".") -- Garrett Goebel IS Development Specialist ScriptPro Direct: 913.403.5261 5828 Reeds Road Main: 913.384.1008 Mission, KS 66202 Fax: 913.384.2180 www.scriptpro.com garrett at scriptpro dot com

1 0

Thank You! Need Ride for tonight's meeting
by Chris Bier 03 Nov '04

03 Nov '04

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi All, ~ Many thanks out to all of you who have helped me and sent your well wishes after the motorcycle crash. I really, really appreciate it. I'm doing a lot better now, and hope to return to work soon. I've gotten a lot of movement back in my arm, but it's going to be quite a while before it's fully healed. It can get very boring and lonely in the hospital, and I appreciate your visits as well. ~ Also, a big thanks to the guys who stepped up and organized our booth at ITEC. ~ I am, currently, unable to drive myself to the meeting tonight, and was wondering if someone would be willing to drive me to tonight's meeting. I live in Liberty, MO. Thank you very, very much, Chris Bier P.S. I will try to have some pictures up soon. - -- I digitally sign my emails. If you see an attachment with .asc, then that means your email client doesn't support PGP digital signatures. http://www.gnupg.org/(en)/documentation/faqs.html#q1.1 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBiUCIE5xXU3JS1mQRAtMeAKDUzyt2kXmfi/3OG2Ny0VCWOALkvACg2Vbv gwAyyaYZ5QyaTbn7lLjP8Wk= =BHdJ -----END PGP SIGNATURE-----

1 0

thanks! // Linuxbios
by Bailey, Michael L [NTK] 03 Nov '04

03 Nov '04

(from dj goku) >Welcome to KCLUG, glad you joined us. -- dj_goku -www.djgoku.com- -www.tektronic.org- ------------------------------ Thank you! From: Duane Attaway <dattawaykclug(a)dattaway.org> >I'm happy to hear linux experiences like yours. I don't seem to hear >enough of the great things people do lately. What people enjoy seems to >put a better perspective of what we do in this world. >Thanks for sharing! -=Duane http://dattaway.org ------------------------------ Linux is a bright spot in the world, no doubt about it! Has anybody tried Linuxbios yet? I read that you have to flash your ROM, but you can get booted in 5 seconds. Of course, with Linux you don't have to reboot much to begin with, unless you have a dual-boot situation. www.linuxbios.org Michael Bailey **************************

1 0

Firmware Activism
by Jonathan Hutchins 03 Nov '04

03 Nov '04

"Hardware vendors have responded positively to activism on the part of members of the OpenBSD community and developers and either allowed redistribution of specific firmware or else begun a dialogue with developers, the head honcho of the OpenBSD project says." http://www.theage.com.au/articles/2004/10/29/1098992287663.html?oneclick=tr…

1 0

Today's Dr. Fun
by Gerald Combs 02 Nov '04

02 Nov '04

I though this was appropriate, since it's often a topic on the list: http://www.ibiblio.org/Dave/Dr-Fun/df200411/df20041102.jpg

1 0

Fwd: FW: Requirement : Perl Developer
by Steven Hildreth 02 Nov '04

02 Nov '04

This can in my mailbox this morning, thought maybe someone on the list might be a good fit. Regards, Steven (Tallen) ---------- Forwarded message ---------- From: Steven Hildreth <s_p_hildreth(a)yahoo.com> Date: Tue, 2 Nov 2004 15:49:16 -0600 Subject: FW: Requirement : Perl Developer To: sphildreth(a)gmail.com ________________________________ From: Vijay_Ittc [mailto:vijay@ittblazers.com] Sent: Tuesday, November 02, 2004 2:05 PM To: s_p_hildreth(a)yahoo.com Subject: Requirement : Perl Developer Hi , We need Perl Developer for a project located in Overland park, Kansas. The project is for 6 months (Extendable) and Our Client requirements are, Job Duties: Perl, PHP, SQL, HTML, Kornshell, Unix, AIX,Solaris expert. Perl is the primary requirement. Familiarity with the DBI, Net::FTP & Expect modules will be After that, basic SQL skills on any database. Ksh scripting is a plus, scripting on AIX & Solaris is also a plus. The candidate will spend the bulk of their time taking high level direction, doing their own analysis, then designing and building solutions in coordination with the client. Please reply with resume/ rate per hour/ Contact details ASAP Thanks and Regards, Vijay PH: 732 875 1591 Fax: 732 875 0096 IT Trailblazers New Brunswick Technology Center Mail Box B-10 100 Jersey Avenue Suite B201 New Brunswick, NJ 08901 vijay_s(a)ittblazers.com www.ittblazers.com

1 0

HOWTO: install cheap RTL8180 wireless PCMCIA card in Linux
by Leo Mauler 02 Nov '04

02 Nov '04

Using ndiswrapper to make a RealTek 8180 wireless card work properly. Rather than bother with the proprietary drivers for Linux, use this one instead. Both URLs are the same link. http://tinyurl.com/657j5 http://www.linuxquestions.org/questions/showthread.php?postid=877345#post87… __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

7 12

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

KCLUG