1
vote
1answer
19 views

CHROOT: Unable to copy files to jailed users directory from local machine using WINSCP

I have setup a Chroot environment for one of my users called client on my system. I am using WINSCP to connect to my server from my machine using public key authentication. Everything works fine, I ...
4
votes
0answers
56 views

CHROOT : Unable to view mounted directories

I posted a question on stack overflow, but I was told that my question was more relevant to this section so I thought I'd repost it here. Here is a quick description of what I have done: I have a ...
3
votes
2answers
70 views

Denying “/opt/” access for SFTP Users other than particular dir

This is my first (newbie) post here in unix stackexchange. I want to use my WebServer (Debian) as SFTPServer giving access to particular employees. The dir structure is as follows under root: ...
0
votes
1answer
59 views

Run Java in a chrooted jail

I'm on a CentOS 6.5 machine with Plesk Panel which I used to create a chrooted environment for a user who can access it via ssh. I'm not a big expert but somehow I managed to let him use some basic ...
1
vote
1answer
51 views

Correlation between CHROOT and Crouton - -

I am trying to understand what purpose/function of CHROOT and how using it with Crouton will allow you to use certain Linux distros and libs. Does CHROOT essentially create some kind of a ...
1
vote
2answers
27 views

Automated test for install script

I'm writing an install script for an appliance that modifies system config files under /etc (amongst other things). How can I test this script non-destructively? Ideally I would like to run the ...
1
vote
3answers
102 views

Allow User To Access Other User's Home Directory

I have a Fedora server. I would create an SFTP user account which is allowed to access other user's home dir. Is it possible? For example user1 -> /home/user1 user2 -> /home/user1 user2 can ...
2
votes
2answers
281 views

Chroot SFTP users who require access to multiple directories under same parent folder

I have a RHEL 6 server with a /Documents directory, and it has child directories 1 2 3 4 5.... right under the /Documents directory. Is it possible to create an SFTP chroot jail that only gives a ...
2
votes
1answer
255 views

How to properly use Gentoo Linux as a supplement to an existing distribution?

While I originally wanted to entirely replace the Linux distribution my NAS uses, I meanwhile came to the conclusion that it would be better to leave the existing system as unmodified as possible and ...
0
votes
1answer
92 views

Can't create a minimal chroot jail

Was trying to create a minimal chroot jail. The steps followed was: Created a folder chroot Copied bash to the folder chroot Run ldd bash to know the dependencies ldd /bin/bash linux-vdso.so.1 ...
1
vote
1answer
430 views

How to assign an additional IP/hostname to a chrooted environment?

While I can simply have e.g. sshd in a chroot environment ("chrootenv") listen to a different port than its parent ("parentenv"), it would be more convenient to have that environment have an ...
2
votes
2answers
139 views

How do I `umount` /proc?

I am following this tutorial on how to do a firmware update to my NAND flash. I followed it only changing the directory where I am placing my new root. I am copying all of the /bin /dev /sbin /usr ...
0
votes
2answers
198 views

Cannot create root jail

I just tried to play around with chroot command only for testing purposes, in order to create a temporary root jail, but I didn't managed to. The platform is CentOS 6.4. and I have done it numerous ...
0
votes
1answer
110 views

32-bit on 64-bit: memory usage for multiple processes

I'm working on a Linux hosting solution for game server software, however the software in question is 32-bit and I'd be running 64-bit on the host. Now, I know I can run 32-bit apps on a 64-bit host ...
1
vote
0answers
219 views

How do I run Gnome from a systemd-nspawn container in a second X server?

I'm using systemd-nspawn to "boot" a second Linux OS from a USB hard disk. I'd like to launch that OS's Gnome Desktop in a second X server running on the same machine on a different tty than the ...
2
votes
0answers
308 views

remount chrooted read-only subdirectory (non-mountpoint) to read-write from within jail?

I'm trying to do the same of this question (multiple linux installation on same filesystem) but I get this result (root filesystem mounted as read-only) . I'm using debian/sid, have successfully ...
2
votes
1answer
111 views

Is it possible to log directly into chroot?

Lets say I boot up my computer and I see the login screen. When I log in as myuser, I want to be restricted to a certain root directory via. chroot. Let's assume that the directory is ...
2
votes
1answer
475 views

Sudo does not work in chroot

I would like to be able to use the sudo command in a chroot environment. I start the chroot as follows: chroot /debian-squeeze /bin/bash Now I'm logged in as root in the chroot. I can do su user ...
2
votes
3answers
549 views

Chroot Risks w/ /dev and /proc

I am planning to set up a few chroot jails for some users to run/test Java applications (lets just assume each application is untrusted). Is there any risk involved with mounting /dev and /proc into ...
2
votes
1answer
699 views

SFTP: give user access to folder outside home

I have a machine running Ubuntu 12.04 LTS with OpenSSH server installed. I have created a user with a jailed home account. When I log in with the user's account, I can only access his home (duh). ...
2
votes
0answers
117 views

How to find current chroot jail path on Linux <2.6.26

While running kernel 2.6.26 or newer it's possible to get the path of the current chroot jail by comparing the mountinfo of the current process and the init process. Is there a way to get the same ...
1
vote
1answer
325 views

MBR is toast or at least Grub is

This started after some kernel trouble that I left alone for a while. I had miscompiled a kernel then tried to re-compile it and started to organize a list of boot options in grub for differently ...
4
votes
3answers
1k views

Boot Linux system from a subdirectory on a partition?

I would like to try to set up a computer so that it has multiple Linux installs all in the same filesystem. For example, the filesytem would have 3 folders: /Ubuntu_Precise, /Ubuntu_Oneiric, and ...
3
votes
1answer
661 views

When can one reboot from inside a chroot environment?

Sometimes when I chroot into some folder , I could use reboot to reset my box, but sometimes I can't. So I want to know why I could do that sometimes and why. UPDATE The chroot environment is ...
4
votes
2answers
3k views

Disable direct login for normal users (like oracle) in linux but allow scp and sftp?

Is it possible to disable direct login for normal users (like oracle) in linux but allow scp and sftp for that use?
5
votes
1answer
330 views

Why is it possible to leave CHROOT with this sftp config?

I'm trying to create the user lenny, that has read and write permissions in the folder /home/lenny/ and has no shell but only access via SFTP. I'm doing the following: useradd lenny mkdir /home/lenny ...
3
votes
3answers
395 views

Unabled to get rid of BIND 9 chroot

I had installed bind-chroot from yum not long ago, and saw that there were errors in the daily logs from named. Under further investigation, I noticed a directory loop. The named files resided under ...
8
votes
4answers
2k views

Lightweight isolated linux environment

I want an isolated (guest) Linux environment on my computer that I can mess up without worrying about the host. E.g. install a lot of stuff from source without package management, pollute environment ...
2
votes
2answers
684 views

Mount points in a chroot

I have some device (say /dev/sda1) mounted at /home/user1. I also have a full Linux system under /tmp/chroot, and the directory /tmp/chroot/home contains only one directory named user2. If I chroot ...
2
votes
1answer
342 views

Debian unstable chroot security issues

This page describes how you can use the debootstrap utility to install a base Debian unstable/sid system on an existing Linux machine. The new install is accessible using chroot. When doing this, ...
4
votes
1answer
462 views

How to disable certain system calls for a given user?

I am creating a web app similar to codepad and for each run-action my app copies a directory (/home/radeks/voidptr/private/chroot-root) to /tmp/voidptr/[random-id]/chroot-root. This chroot directory ...
2
votes
3answers
822 views

Is there a linux vfs tool that allows bind a directory in different location (like mount --bind) in user space?

For a user process, I want to mount a directory in other location but in user space without root privilieges. Something like mount --bind /origin /dest, but with a vfs wrapper. Like a usermode ...