General :: Restrict SSH User To Connection From One Machine
Jan 4, 2011
During set-up of a home server (running Kubuntu 10.04), I created an admin user for performing administrative tasks that may require an unmounted home. This user has a home directory on the root partition of the box. The machine has an internet-facing SSH server, and I have restricted the set of users that can connect via SSH, but I would like to restrict it further by making admin only accessible from my laptop (or perhaps only from the local 192.168.1.0/24 range). I currently have only an
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Jan 21, 2010
1-Can I do su - userA in php? Cam I have php run the whole script as userA.
2-Can I make php to run from a certain directory? like chroot kind of things.
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May 26, 2011
I use Rh server , can advise if I want to restrict the root user can not directly login to the system ( eg. ssh -l root IP_address" , what can i do ?
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Sep 14, 2010
Can I restrict the number of ssh connections to my Linux box - by username or by ip or both?
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Jun 9, 2010
how can i restrict a single particular user from logging into the server not more than 5 times?
The conditions may be:
1) wrong password
2) can login only 5 times on one day etc.
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Mar 11, 2010
Is there way we can restrict root to su to normal user. Or at least a way to prompt for the password when root tries to su <username>.
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Jun 24, 2011
I want to limit delete of a particular folder in the user's home folder and to restrict any add/change/delete on files in that restricted directory.
/home/myuser
/home/myuser/_protected //no delete
/home/myuser/_protected/1.txt //only read
How can I do that on Ubuntu server?
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Aug 12, 2010
If there is a general NFS share in the LAN and for example this share has three files - a, b, c is there any way to restrict file access to the root user of one particular host(falcon) in the same LAN environment while the normal users from the same host(falcon) should be able to access the NFS share & files a, b, c.
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Jan 20, 2011
is there any way so that we can restrict root to delete a file/directories and What is extended file attributes.
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May 15, 2011
I need to restrict users if their download file size exceeds xxx amount, set later download speed to "256kbps".
OS: Centos 5.5
Squid 3.1.8
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Jul 1, 2010
How do I do this at my modem page?
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Jul 1, 2010
Anybody know how to do this, IN MY MODEM PAGE?This is the best I can copy my modem config page code...
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Jun 30, 2010
I am currently in a project to set up an LTSP server with 10 thin clients. I am using Ubuntu 9.10 (Karmic).
Installing server and booting clients are working fine. Now, according to the need, I have to restrict user session numbers and allow resuming previous user session.
I have achieved to do the first one, but still could not able to setup the second one. As per requirement, if some thin can have power failure, the same session should be restored back. I am confused here, if I need to focus on saving xsessions or saving gnome sessions. I am looking for a concrete solution as I am running out of time.
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Apr 7, 2011
I m new with Fedora 14, and i have a basic business case :
I want to setup a user which should
- only connect to the server with SSH (ex.: no X11 connection).
- cannot change its shell
- cannot do any SU / SUDO command
This user is very similar to a SERVICE user, as I expect him only to run a single program (its shell).
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Apr 1, 2011
I've looked around and haven't been able to really understand how to do this yet.How can I set up a SSH user to access a single folder (and it's subfolders) on my system.I want to give my brother access to a folder under /media/Data/FilesBut I don't want him to access any other part of my system.I've set up a user (using useradd and gave him a password but no home directory).I want to have him use SSH to log in to my machine, start in the /media/Data/Files directory, and not be able to get out of that directory - but add/change/delete/etc any of the files.
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Apr 13, 2011
I am running RHEL release 4 (Nahant Update 6). I currently have a fax server that has been encountering issues recently after hours. My boss would like our helpdesk to monitor the status of these modems throughout their shift. This has led to a request for a helpdesk account to be created on our linux box that only has access to a few commands. Is there a way to limit the new user to only have access to the following commands?
cd
less
cat
Additionally I would like to create a script for them to run that would chmod our modems when necessary since their permissions reset after a power cycle. BUT not give them access to the chmod command, just chmod through that script for those specific devices.
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Jan 26, 2011
I would like to allow a user to login through SSH but with different permission coming from different ipaddress.
For example, a user "tester" login to SSH through 192.168.1.1 and another user login with the same login id "tester" but from different ip 192.168.1.2.
How do I restrict 192.168.1.2 to only allow for viewing the content in the home directory while giving 192.168.1.1 full access?
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Jan 6, 2010
Here's the beginning of the issue: I'm running Fedora 12 with httpd and sshd. I want to create a user with a scponly shell for sftp access, but this user should ONLY be able to view /the/http/base/dir and its subdirectories. The user should not be able to see or get into directories above the httpd base. Someone mentioned creating a chroot jail for sshd and binding the httpd base to that dir, but this seems like more work than is necessary for the application I wish. Also mentioned was creating a user, say user1 with a selinux user setting of staff_r. I have read the articles and creating a user of staff_r isn't overly difficult, but how would I make it where staff_r would be restricted to where I want them to be? If I'm not mistaken, that would require changing the context of /the/httpd/base/dir?
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May 3, 2011
I want to restrict user for SSH Logon, but able to use SFTP.
Also, i like to know how to restrict a user on SSH from everywhere except one host.
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Feb 26, 2011
I would like to allow a user to login through SSH but with differentpermission coming from different ipaddress.For example, a user "tester" login to SSH through 192.168.1.1 andanother user login with the same login id "tester" but from differentip 192.168.1.2.How do I restrict 192.168.1.2 to only allow for viewing the content inthe home directory while giving 192.168.1.1 full access?I got a suggestion from some oneApproach 1) Based on the ip you change the shell. If it's just for read only ajail would be fine.but how do I change shell based on IP?Approach 2) to have two ssh instances. Let's say port 22 and port 24. Port 22 isfor read only, while port 24 is for full accessso how can it be possible to give port 22 only read only access to SSH
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Sep 24, 2010
I heard we can set security in /etc/hosts.allow and /etc/hosts.deny on user base also like something user@domain or something if so how can I restrict a user to access particular service by his/her user name in a particular host via /etc/hosts.allow or /etc/hosts.deny
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Oct 12, 2009
I want to restrict to send mail for particular allowed users of UNIX user. How can I achieve that? Which file I need to configure to allow users to send mail?
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May 5, 2011
Is it possible to restrict telnet connection from remote to my server(linux -centos5)?
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Ex : [root@localhost]# telnet 10.0.0.33 80
Trying 10.0.0.33...
[code]...
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Dec 4, 2010
Is there any way to restrict user from running certain application with wine? Something like white or blak lists?
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Jun 4, 2010
We just installed Ubuntu latest version (10.04), and what we are willing to do, is restrict the main computer user (none-administrator) to be only able to use web browser (Mozilla Firefox or some other) and that is it. Not allowed to do anything else, apart from this, and shutting down the station. How and where should we apply this type of limitation on a user?
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Aug 23, 2010
Does anyone know how to restrict only certain users to log into my RHEL 5.3 cluster? I have tried using pam.d but no luck.
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May 7, 2010
I want to restrict a user accessing my ftp site.
1) i can block the user in ftp configuration file
2) i can block the user in PAM or /etc/host.deny
i heard that if pam is denying the user and ftp is allowing the user the user can get the access it means that ftp conf file is stronger than host.deny
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Jan 18, 2011
2 of us have been googling all morning trying to find out how we can restrict ftp logins to their own home directories only but nothing we've found so far has worked. We've tweaked sshd_config so that they default to their home directory but they are able to navigate up/across/down to everything. This is a "straight-out-of-the-box" debian 5.0.5 Netinst. Just a basic system with Apache/MySql/PHP/SSH and no desktop.
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May 23, 2010
restrict a user from seeing hidden files and folders?
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Mar 9, 2011
In RedHat 4/5 How can i jail/restrict an sftp user to his home directory?
Can i do this without using rssh ?
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