Re: [Openvpn-users] no group nobody: an issue?

2015-06-05 Thread David Sommerseth
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On 05/06/15 04:35, Douglas D Germann Sr wrote:
[...snip...]
 Thu Jun  4 22:23:45 2015 setgid('nobody') failed: Operation not 
 permitted (errno=1)

Hi,

I'm just so puzzled by this error message.  Can you please do these
two commands and provide the result?

$ id nobody
$ getent group nobody


- --
kind regards,

David Sommerseth

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Re: [Openvpn-users] any way to get local network details to flow through to the server?

2015-06-05 Thread jack seth


 Message: 1
 Date: Tue, 2 Jun 2015 23:43:39 +0200
 From: Gert Doering g...@greenie.muc.de
 Subject: Re: [Openvpn-users] any way to get local network details to
 flow through to the server?
 To: Jason Haar jason_h...@trimble.com
 Cc: openvpn-users@lists.sourceforge.net
 openvpn-users@lists.sourceforge.net
 Message-ID: 20150602214339.gc...@greenie.muc.de
 Content-Type: text/plain; charset=us-ascii

 Hi,

 On Wed, Jun 03, 2015 at 08:05:21AM +1200, Jason Haar wrote:
 In this case using the openvpn tunnel as the default gw should have
 solved the problem - but normal people can't figure that out - so I'd
 like to solve it dynamically at the server end. However, to do that, the
 server would need to know in advance the routing table of the client -
 so that it could do something like if 10.anything is local, then
 disable split tunnel and push all traffic through openvpn; else do split
 tunnel.

 I'm not exactly sure what options the client sends to the server in
 the peer-info handshake (IV_...), but I'm afraid that routing data
 is not part of it...

 What you could *try* is a magic option I just discovered recently :-) - push
 redirect-private, and then push routes for 10.0.0.0/8 (and maybe a few
 /25s for the really important stuff, to override whatever 10.x netmask the
 hotel might use).

 --redirect-private is the bit of --redirect-gateway that figures out the
 local default gateway, and installs a host route vpn server - this gateway,
 so after that, you're fairly safe to redirect about anything...

 (As a side note, you're screwed in any case if the hotel gateway happens
 to use an ip address also used by one of your servers - but to fix *that*,
 you'd have to go down the use NAT on the server tun route...)

 gert


Can you further explain the use NAT on the server tun?  How would you solve 
the issue if the server has the same ip address as the hotel gateway?  Please 
post examples.

  
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Re: [Openvpn-users] no group nobody: an issue?

2015-06-05 Thread Gert Doering
Hi,

On Fri, Jun 05, 2015 at 11:03:58AM -0400, Douglas D Germann Sr wrote:
 OTOH, if this is screwed up, might there be some other bug that could 
 affect operations or security of this production nas? I worry

Of course there could be bugs overall :-) - but generally speaking, if
they did not mess too much with our sources, and (this is the more 
important bit) user nobody still works, I do not see a high risk here.

Generally, OpenVPN's track record in regard to externally exploitable
bugs is very good.  Worst thing so far was you can make the server 
exit cleanly - which is totally annoying, but no lever to break into
a system.

gert
-- 
USENET is *not* the non-clickable part of WWW!
   //www.muc.de/~gert/
Gert Doering - Munich, Germany g...@greenie.muc.de
fax: +49-89-35655025g...@net.informatik.tu-muenchen.de


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Re: [Openvpn-users] no group nobody: an issue?

2015-06-05 Thread Douglas D Germann Sr


On 06/05/2015 11:10 AM, Gert Doering wrote:

Hi,

On Fri, Jun 05, 2015 at 11:03:58AM -0400, Douglas D Germann Sr wrote:

OTOH, if this is screwed up, might there be some other bug that could
affect operations or security of this production nas? I worry

Of course there could be bugs overall :-) - but generally speaking, if
they did not mess too much with our sources, and (this is the more
important bit) user nobody still works, I do not see a high risk here.

Generally, OpenVPN's track record in regard to externally exploitable
bugs is very good.  Worst thing so far was you can make the server
exit cleanly - which is totally annoying, but no lever to break into
a system.

gert

Thanks, Gert! You ease my worries.

:- Doug.
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Re: [Openvpn-users] no group nobody: an issue?

2015-06-05 Thread Douglas D Germann Sr

David--



On 06/05/2015 06:06 AM, David Sommerseth wrote:

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On 05/06/15 04:35, Douglas D Germann Sr wrote:
[...snip...]

Thu Jun  4 22:23:45 2015 setgid('nobody') failed: Operation not
permitted (errno=1)

Hi,

I'm just so puzzled by this error message.  Can you please do these
two commands and provide the result?

$ id nobody
$ getent group nobody


- --
kind regards,

David Sommerseth

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mariah id nobody
uid=99(nobody) gid=99(nobody) groups=99(nobody)
mariah getent group nobody
-ash: getent: not found
mariah

Synology has a very slimmed down version of linux, based I think on busybox.

Thanks for helping, David!
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