Re: SSH access restrictions

2003-10-21 Thread Rudi Starcevic
Hi, Did you try c) already? Did it work effectively? No not yet. Still in research/checking out the options mode. but c) is not OpenSSH right? Correct. Sorry I forgot to mention that is my options list. I've only skimmed over the lisence so far. It will require a closer to make a proper assesment.

Re: SSH access restrictions

2003-10-21 Thread Rudi Starcevic
Hi, Did you try c) already? Did it work effectively? No not yet. Still in research/checking out the options mode. but c) is not OpenSSH right? Correct. Sorry I forgot to mention that is my options list. I've only skimmed over the lisence so far. It will require a closer to make a proper assesment.

Re: SSH access restrictions

2003-10-21 Thread Marc Schiffbauer
* Rudi Starcevic schrieb am 21.10.03 um 16:53 Uhr: > Hi, > > > Our rbash shells don't have access to vi ... or much else! Their > > path is set to "/usr/local/lib/rbash-bin/" and that directory has > > sym-links to a few selected binaries. > > > > Still I don't regard the rbash setup as secure.

Re: SSH access restrictions

2003-10-21 Thread Marc Schiffbauer
* Rudi Starcevic schrieb am 21.10.03 um 16:53 Uhr: > Hi, > > > Our rbash shells don't have access to vi ... or much else! Their > > path is set to "/usr/local/lib/rbash-bin/" and that directory has > > sym-links to a few selected binaries. > > > > Still I don't regard the rbash setup as secure.

Re: SSH access restrictions

2003-10-21 Thread Jason Lim
> To sumerize the options I've found so far: > > a) PAM chroot > b) rbash - restricted shell > c) SSH2 chroot access. > > In this case the machine in question is a remote virtual server with > only SSH access. So I think c) may be the go. > > If I had local users I guess a) or b) with a) having

Re: SSH access restrictions

2003-10-21 Thread Giacomo A. Catenazzi
I. Forbes wrote: Our rbash shells don't have access to vi ... or much else! Their path is set to "/usr/local/lib/rbash-bin/" and that directory has sym-links to a few selected binaries. BTW TAB completition works on all directories, so you can discover all files in systems (in readable director

Re: SSH access restrictions

2003-10-21 Thread Rudi Starcevic
Hi, > Our rbash shells don't have access to vi ... or much else! Their > path is set to "/usr/local/lib/rbash-bin/" and that directory has > sym-links to a few selected binaries. > > Still I don't regard the rbash setup as secure. Yes but is sound OK for your needs. In this case I need, or wan

Re: SSH access restrictions

2003-10-21 Thread I. Forbes
Hello Rudi On 21 Oct 2003 at 22:58, Rudi Starcevic wrote: > Though I'd post something I found on the net about rbash. > I haven't tested it yet. > > [quote] > > But it's possible to get out from this chroot. > > woockie_at_twoflower:~$ cd .. > rbash: cd: restricted > woockie_at_twoflower:~$ v

Re: SSH access restrictions

2003-10-21 Thread Jason Lim
> To sumerize the options I've found so far: > > a) PAM chroot > b) rbash - restricted shell > c) SSH2 chroot access. > > In this case the machine in question is a remote virtual server with > only SSH access. So I think c) may be the go. > > If I had local users I guess a) or b) with a) having

Re: SSH access restrictions

2003-10-21 Thread Giacomo A. Catenazzi
I. Forbes wrote: Our rbash shells don't have access to vi ... or much else! Their path is set to "/usr/local/lib/rbash-bin/" and that directory has sym-links to a few selected binaries. BTW TAB completition works on all directories, so you can discover all files in systems (in readable directo

Re: SSH access restrictions

2003-10-21 Thread Rudi Starcevic
Hi, Though I'd post something I found on the net about rbash. I haven't tested it yet. [quote] But it's possible to get out from this chroot. woockie_at_twoflower:~$ cd .. rbash: cd: restricted woockie_at_twoflower:~$ vi foo in vi: :set shell=/bin/sh :shell woockie_at_twoflower:~$ cd .. woocki

Re: SSH access restrictions

2003-10-21 Thread Rudi Starcevic
Hi, > Our rbash shells don't have access to vi ... or much else! Their > path is set to "/usr/local/lib/rbash-bin/" and that directory has > sym-links to a few selected binaries. > > Still I don't regard the rbash setup as secure. Yes but is sound OK for your needs. In this case I need, or wan

Re: SSH access restrictions

2003-10-21 Thread I. Forbes
Hello Rudi On 21 Oct 2003 at 22:58, Rudi Starcevic wrote: > Though I'd post something I found on the net about rbash. > I haven't tested it yet. > > [quote] > > But it's possible to get out from this chroot. > > woockie_at_twoflower:~$ cd .. > rbash: cd: restricted > woockie_at_twoflower:~$ v

Re: SSH access restrictions

2003-10-21 Thread Rudi Starcevic
Hi Ian, > We have a set-up that uses "rbash". The client gets "rbash" as a > login shell and his path is preset to a directory that has a few > chosen executables in it. Most interesting. Sounds like it would do just what I want. I'm on to it. > I suspect a determined hacker could get around t

Re: SSH access restrictions

2003-10-21 Thread Rudi Starcevic
Hi, Though I'd post something I found on the net about rbash. I haven't tested it yet. [quote] But it's possible to get out from this chroot. woockie_at_twoflower:~$ cd .. rbash: cd: restricted woockie_at_twoflower:~$ vi foo in vi: :set shell=/bin/sh :shell woockie_at_twoflower:~$ cd .. woocki

Re: SSH access restrictions

2003-10-21 Thread I. Forbes
Hello Rudi On 18 Oct 2003 at 11:23, Rudi Starcevic wrote: > Is there anyway to resistict a non-root user's shell account ? > > For example once he/she is logged in is there any way to deny, say, > reading the /etc/passwd file ? We have a set-up that uses "rbash". The client gets "rbash" as a

Re: SSH access restrictions

2003-10-21 Thread Rudi Starcevic
Hi Ian, > We have a set-up that uses "rbash". The client gets "rbash" as a > login shell and his path is preset to a directory that has a few > chosen executables in it. Most interesting. Sounds like it would do just what I want. I'm on to it. > I suspect a determined hacker could get around t

Re: SSH access restrictions

2003-10-21 Thread I. Forbes
Hello Rudi On 18 Oct 2003 at 11:23, Rudi Starcevic wrote: > Is there anyway to resistict a non-root user's shell account ? > > For example once he/she is logged in is there any way to deny, say, > reading the /etc/passwd file ? We have a set-up that uses "rbash". The client gets "rbash" as a

Re: SSH access restrictions

2003-10-20 Thread Rudi Starcevic
Marc, Thanks. http://www.grsecurity.net looks very interesting. Another couple of jobs have popped up which I need to address first so I don't tihink I'll be working on this 'til later in the week. When I do I'll be sure to post an update to the list. Many thanks to you all. It would not be possibl

Re: SSH access restrictions

2003-10-20 Thread Rudi Starcevic
Marc, Thanks. http://www.grsecurity.net looks very interesting. Another couple of jobs have popped up which I need to address first so I don't tihink I'll be working on this 'til later in the week. When I do I'll be sure to post an update to the list. Many thanks to you all. It would not be pos

Re: SSH access restrictions

2003-10-20 Thread Marc Schiffbauer
* Rudi Starcevic schrieb am 19.10.03 um 04:30 Uhr: > Thanks Marc, > > Thanks also to Russel. > > > I did it with pam_chroot which is really nice > > Great - I'll start looking here. > > Currently we only really offer FTP access but would like > to include SSH access too. > > I know with the ri

Re: SSH access restrictions

2003-10-19 Thread Rudi Starcevic
Hi Jason, Let us all know if this works for you, as I (and I think quite a few ppl that run ISPs) would be interested to know if this actually works or not For sure. Will be spending more time on this latter today and will report my success/failures/questions. Cheers Rudi. -- To UNSUBSCRIBE, e

Re: SSH access restrictions

2003-10-19 Thread Jason Lim
19 October, 2003 1:54 PM Subject: Re: SSH access restrictions > Thanks Jason, > > > Usually you can't... as they have dependency problems. > > Well I think it may be OK to just use the 'testing' .deb. > Why ? > Because I just did. > It all installed OK w

Re: SSH access restrictions

2003-10-18 Thread Rudi Starcevic
Thanks Jason, > Usually you can't... as they have dependency problems. Well I think it may be OK to just use the 'testing' .deb. Why ? Because I just did. It all installed OK without any error's. I just downloaded it and dpkg -i it. I haven't used it yet as I'm still reading the readme but it ha

Re: SSH access restrictions

2003-10-18 Thread Jason Lim
> Hi, > > Just a quick question on libpam-chroot. > > This package is not availalbe in 'stable'. > I've only ever used 'stable'. > > It should be OK to grab this package from 'testing' and use it hey ? Usually you can't... as they have dependency problems. What you need is a "backport" to stabl

Re: SSH access restrictions

2003-10-18 Thread Rudi Starcevic
Hi, Just a quick question on libpam-chroot. This package is not availalbe in 'stable'. I've only ever used 'stable'. It should be OK to grab this package from 'testing' and use it hey ? Thanks again Regards Rudi. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe".

Re: SSH access restrictions

2003-10-18 Thread Rudi Starcevic
Thanks Marc, Thanks also to Russel. > I did it with pam_chroot which is really nice Great - I'll start looking here. Currently we only really offer FTP access but would like to include SSH access too. I know with the right permissions a user account cannot do any damage but I would just like t

Re: SSH access restrictions

2003-10-18 Thread Marc Schiffbauer
* Rudi Starcevic schrieb am 18.10.03 um 03:23 Uhr: > Hi, > > Is there anyway to resistict a non-root user's shell account ? > > For example once he/she is logged in is there any way to deny, say, > reading the /etc/passwd file ? > Can they be restricted like the way a user can be restricted usi

Re: SSH access restrictions

2003-10-17 Thread Russell Coker
On Sat, 18 Oct 2003 11:23, Rudi Starcevic wrote: > For example once he/she is logged in is there any way to deny, say, > reading the /etc/passwd file ? > Can they be restricted like the way a user can be restricted using FTP ? I have heard of people setting up chroot environments for ssh accounts