Re: [gentoo-user] Mailing list and PGP/MIME

2008-05-29 Thread Paul Sebastian Ziegler

On Fri, 30 May 2008 00:11:51 +0100
Robert Bridge [EMAIL PROTECTED] wrote:


 On Fri, 30 May 2008 02:05:42 +0300
 Daniel Iliev [EMAIL PROTECTED] wrote:
 

  On Thu, 29 May 2008 08:38:27 + (UTC)
  [EMAIL PROTECTED] wrote:
  

   W. Canis wrote:

OK, I can't bring myself a proof of concept.
   
   Allow me to help you with that part.
   
   Personally I still think signatures in public mailing lists are

   overrated.
   
   NOT signed by

   Some Gentoo user with a security job and 5 minutes of time
   
   P.S. Daniel - I really hope this is ok with you. I took your dare

   literally for this one time. Your personality won't be abused by
   me again.
  
  
  No problem,..ehh..PSZ, I presume?  :) 
  
  It was I who gave the idea and the challenge. Don't worry, it's

  really fine by me.
  
  I admit I looks very much as if the message was sent by me and could

  be deceiving at first glance, but:
  
  
  FAKE:

  ===
  Received: from observed.de (observed.de [81.169.134.89])
by pigeon.gentoo.org (Postfix) with ESMTP id AE151E05BC
for gentoo-user@lists.gentoo.org; Thu, 29 May 2008
  08:38:27 + (UTC)
  ===
  
  
  NOT FAKE:

  ===
  Received: from fg-out-1718.google.com (fg-out-1718.google.com
  [72.14.220.153])
 by pigeon.gentoo.org (Postfix) with ESMTP id 3E5ACE0229
 for gentoo-user@lists.gentoo.org; Mon, 26 May 2008 00:30:07
  + (UTC)
  ===
 
 Except that even that can be faked.
 
 The header is part of the payload, so can be whatever the user decides

 to put in, simply fake some a set of relay lines, and how do you know?
 
 Rob.


Yes, you can insert headers before you send the message, but the SMTP
server which receives the message for local delivery always has the
final word. In this case pigeon.gentoo.org has added its headers to the
proof of concept message and we can see that the mail from [EMAIL PROTECTED]
was actually sent from elsewhere.


Glad to hear you didn't mind, Daniel.
Yes, you traced me correctly. And as Rob already noticed, that could be 
circumvented by spoofing the header a little more. Also you were correct to 
notice, that the receiving server has the last word - however many servers today 
do -not- perform reverse DNS lookups. You can basically put into the EHLO 
message whatever you want and the receiving server will buy it.


So with some effort we could make it look as if the message was actually 
received from fg-out-1718.google.com. At least as long as pidgeon.gentoo.org 
doesn't do reverse DNS lookups, which frankly I didn't check. :)


--Paul
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Re: [gentoo-user] Help me reboot X

2007-06-03 Thread Paul Sebastian Ziegler
 Can somebody help me stop and restart X?  I'm using kdm for login.

Just in case your X-Server is still responding AT ALL you can always try
hitting Ctrl+Alt+Backspace to kill it. This will work up to a certain
level of hanging.

Then simply restart it by typing startx.

Otherwise ssh into your box and use ps -ax | grep X or ps -e | grep
X to get X's PID and then kill it using kill.
kill has a priority switch. So kill [PID] might not work. However
kill -9 [PID] will kill about anything on the spot. If the -9-switch
fails to kill X you are having more serious troubles.

My two cents
Paul

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Re: [gentoo-user] Setting installation directories globally

2007-05-02 Thread Paul Sebastian Ziegler
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Hi,

thank you all for your very clear and thus helpful statements.
I am going to reconsider my plans. Maybe there are better structures.
Or maybe I'll simply keep the gentoo-style structures and place some
folders with symlinks under root.

Anyways - thanks
It's always a pleasure to post here
(at least as long as people are not flaming on some semi-interesting
subject. :) )

Many Greetings
Paul
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[gentoo-user] Setting installation directories globally

2007-05-01 Thread Paul Sebastian Ziegler
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Hy everybody,

can you please tell me if there is some way to set the install directory
of an ebuild globally without changing the ebuild?
Let me clarify:
I want a few packages to not be merged under / directly but rather to be
located under /something/*.
I understand that the ebuilds contain directives of where to install the
files through src_install(). However I don't believe it would be a good
idea to edit ebuilds manually since it would lead to breakages during
emerge --sync.
So is there some file I can edit to change the install directory for a
certain package?
For example like setting
wireshark /wifi
firefox /stuff
baselayout /
(this is just a rough sketch of what I'm looking for.)

All help would be greatly appreciated!

Many Greetings
Paul
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Re: [gentoo-user] Setting installation directories globally

2007-05-01 Thread Paul Sebastian Ziegler
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I thought about that too, but wouldn't that more or less create a new
system. For instance if I emerged a library (say libpcap) with
ROOT=/libs and then tried to emerge wireshark (which depends on
libpcap) with ROOT=/analysis I think that wireshark would fail to
start due to missing libraries. (Or it would pull in libpcap once more
and merge it into /analysis thus resulting in several installed copies
at once).

Please correct me if I should be mistaken.

Thanks for the help
Paul

Joshua Doll schrieb:
 Would ROOT= in the emerge command work?
 
 --Joshua Doll
 
 
 Paul Sebastian Ziegler wrote:
 Hy everybody,
 
 can you please tell me if there is some way to set the install directory
 of an ebuild globally without changing the ebuild?
 Let me clarify:
 I want a few packages to not be merged under / directly but rather to be
 located under /something/*.
 I understand that the ebuilds contain directives of where to install the
 files through src_install(). However I don't believe it would be a good
 idea to edit ebuilds manually since it would lead to breakages during
 emerge --sync.
 So is there some file I can edit to change the install directory for a
 certain package?
 For example like setting
 wireshark /wifi
 firefox /stuff
 baselayout /
 (this is just a rough sketch of what I'm looking for.)
 
 All help would be greatly appreciated!
 
 Many Greetings
 Paul
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Re: [gentoo-user] Setting installation directories globally

2007-05-01 Thread Paul Sebastian Ziegler
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 As far as I know there is no way to change the prefix via portage, since its 
 all hardcoded (kinda makes me wonder why this was never added as a feature 
 tho).  

Makes me wonder, too. I'm starting to think about writing a patch. It
should be somehow possible to let portage override the settings within
the ebuild. However I have never hacked up emerge before. Any
suggestions by the pros out there?

 My best guess is that you're going to have to setup an overlay.  This is what 
 I would do (untested tho):
Yeah, I thought about that too, but it pretty much eliminates the point
of using Portage in the first place.

Many Greetings
Paul
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Re: [gentoo-user] Setting installation directories globally

2007-05-01 Thread Paul Sebastian Ziegler
 Whats the purpose of this?

To create a very clear directory structure for a small binary Linux
distribution I am planning to build using Gentoo and Portage.

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Re: [gentoo-user] Recommendation

2007-02-21 Thread Paul Sebastian Ziegler
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I dont know about your X Server (there are some great guides out there -
don't despair, it never worked for me in the first run either) but I
think I have a clue to whats with you network card:

The LiveCD has a kernel with all the drivers enabled as modules (or
probably build in). The kernel you compiled yourself will probably not
have those.
Try this: Find out what kind of network card you have (Bo Andresen wrote
in his mail how to do this) - go back and configure the Kernel - you can
find the ethernet-drivers under Device Drivers - Network Device Support
- - Ethernet (10 or 100 Mbit) || Ethernet (1000 Mbit) || Ethernet (1
Mbit). Now find your card's driver (read the help-pages or search the
web if you don't know it) and build it into your kernel (press y).
Then recompile your kernel and boot it.

You should see your card with ifconfig -a now.

HTH
Paul

Scott W. McMikle schrieb:
 I have used Mandriva and Kubuntu and several other distributions before
 I thought I would give Gentoo a try because I like to tweak and learn
 more about Linux.  The live cd works great on my machine, but when I
 attempted to install Gentoo on that same machine, X does not work, nor
 does my network connection.  I have tried the Gentoo handbook, but I am
 unable to find the answers to solve my problems.  I have found myself
 quickly over my head and now I begin to wonder if I am not quite ready
 for Gentoo.  What would you all recommend?

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Re: [gentoo-user] Re: Did I just get hacked???

2007-02-11 Thread Paul Sebastian Ziegler
Hi Grant,

personally (but this is by far only ONE possible setup for your task)
I'd advise you to connect eth0 to wan through a box set up as a bridge
(try brctl). If that box has a good wireless card and good drivers (this
mostly means if that box isn't running Windows) you can also put that
wireless-card into promiscuous mode lock it to your chanel and ssid and
feed wireshark your WEP-Key or WPA-PSK for decryption.
If not, then you'll have to use a second box for the wireless sniffing.

BTW. current rootkits won't just replace ps or some other tools. Good
rootkits do not run in userspace; they run in kernelspace. They directly
intercept the function-calls. Just another thing to keep in mind while
trying to scan for them.

hth
Paul

Grant schrieb:
  A good rootkit will install a ps that won't show the 'bot
  processes.  The one time a machine of mine got hacked, netstat
  still worked, but I don't know why a hacked netstat couldn't be
  installed as well.

  Looking through /proc/≤pid is probably still reliable.


 Hello Grant,

 I keep an old portable around, running wireshark and a flat hub.
 You can set your ethernet address to 0.0.0.0 and fire up wireshark.

 You can then sniff any (ethernet) segment of your network for
 nefarious traffic or male-configured network applictions.
 
 Ok, it sounds like the key to figuring this out is watching the
 outgoing network traffic for weird stuff.  eth0 is on the WAN and
 wireless ath0 is on the local subnet.  How would you monitor the
 outgoing traffic considering my setup?
 
 - Grant
 │ИМ╒▀╛z╦·з(╒╦j)b·bst==

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Re: [gentoo-user] Should we NEVER do an ``emerge -u world''?

2006-09-27 Thread Paul Sebastian Ziegler
If the problem is that your device is not mounted automatically you can
simply try
mount /dev/sda1 /mnt/whatever
with the appropriate device and folder as root.

Apart from that you could check /etc/fstab for the auto-argument.

Or if this doesn't work you can check dmesg to see what happens to your
device.

Apart from this:
You SHOULD do emerge -u world. However emerge -uD world might be smarter...
Also don't forget to update your config-files with dispatch-conf or
etc-update.

hth
Paul

sdoma wrote:
 Hi,

 there is it again ...
 I've upgraded my system and things stop working. :(((

 After the upgrade there is no device coming up if I plug in an USB
 device.
 I'm on a stable (x86) system and I would need my USB disks just now. Any
 way to fix this quick?

 Thanks
 Frank



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Re: [gentoo-user] Exluding some apps from emerge --update world

2006-07-30 Thread Paul Sebastian Ziegler
Alex Fortwinder wrote:
 Hi list,
 
 I's like to update my system, however, I'd like to keep some of the packages 
 as they are (X, firefox, kernel, etc)
 How do I go about it before i run emerge --update --deep --newuse world?
 Thanks in advance, 
 Alex

Hi,

I'm not sure if I missed something here but removing the packages from
the world-file (/var/lib/portage/world) should work.
Also you could emerge them using the --oneshot option in the first place
to avoid adding them to the world-file.

However are you really sure you want to exclude packages with frequent
security-issues like firefox and the kernel from being updated?

MfG
Paul


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Re: [gentoo-user] Internet connection sharing

2006-06-11 Thread Paul Sebastian Ziegler
Hi,

maybe it would be easier to buy a PCMCIA-based wireless card.
This would eliminate the need for cabeling the laptop down.
I own several and even the cheap ones that come at 17 € have good reach
and support WPA (sometimes even WPA2).

Just a suggestion.

HTH
Paul

2006-06-11 (日) の 12:03 -0700 に Grant さんは書きました:
 My Gentoo workstation connects to my Gentoo router's wireless WPA
 connection just fine, but the wireless card built into my girlfriend's
 XP laptop does not support a WPA connection at all.  I won't use WEP,
 but I really need to get her connected.  The router's single ethernet
 port is being used by the DSL modem, but my workstation's ethernet
 port is free.  What would I need to do to share my workstation's
 connection to the router with her via the workstation's ethernet port?
  Would I need to set my workstation up as a full-blown router via:
 
 http://www.gentoo.org/doc/en/home-router-howto.xml
 
 - Grant

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Re: [gentoo-user] Internet connection sharing

2006-06-11 Thread Paul Sebastian Ziegler
Hi,

as far as I know getting her online shouldn't be a problem then.
All the cards you can buy will probably ship with drivers for Windows XP
so you'll get it running very fast. Afterwards you can just configure
her laptop to access the wireless router you connect to with your
workstation without having to switch to WEP since then she'll be able to
use WPA.

Paul

2006-06-11 (日) の 12:51 -0700 に Grant さんは書きました:
  Hi,
 
  maybe it would be easier to buy a PCMCIA-based wireless card.
  This would eliminate the need for cabeling the laptop down.
  I own several and even the cheap ones that come at 17 € have good reach
  and support WPA (sometimes even WPA2).
 
  Just a suggestion.
 
  HTH
  Paul
 
 You think the config would be tricky then?
 
 - Grant
 
   My Gentoo workstation connects to my Gentoo router's wireless WPA
   connection just fine, but the wireless card built into my girlfriend's
   XP laptop does not support a WPA connection at all.  I won't use WEP,
   but I really need to get her connected.  The router's single ethernet
   port is being used by the DSL modem, but my workstation's ethernet
   port is free.  What would I need to do to share my workstation's
   connection to the router with her via the workstation's ethernet port?
Would I need to set my workstation up as a full-blown router via:
  
   http://www.gentoo.org/doc/en/home-router-howto.xml
  
   - Grant
 

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