Sponsored Content
Operating Systems Linux Red Hat Sftp server/chrooted trying to limit user permissions Post 302921169 by xdawg on Wednesday 15th of October 2014 01:08:14 PM
Old 10-15-2014
Sftp server/chrooted trying to limit user permissions

I needed to set up an sftp server for an external user to upload data for an internal developer.

What I did was created a chrooted user for the external guy, and then created an internal group with full permissions to that directory and then made the internal developer a member of that group so he could grab whatever he needed/etc.

My question is how can I minimize the permissions of the chrooted user so that he/she can upload ONLY, not list what's in the directory, manipulate what's already in there, etc. When I tried locking down the permissions I started running into problems - with only write and/or execute the user was not able to get into the directory, etc. Or is this a limitation with this kind of setup, namely that the chrooted user has to have elevated (rwe) permissions for this to work?

Last edited by xdawg; 10-15-2014 at 02:15 PM..
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

sftp permissions

Hi I've been banging my head with this problem for two days, and I'm quite hopeless. First of all, i would like to insist that no samba is involved. I have a bunch of users whose home directory is /home/SFFS . Always. All of them. And they all belong to the group sffs. Permissions of... (4 Replies)
Discussion started by: Calvin1602
4 Replies

2. Shell Programming and Scripting

sftp file size limit

Hi, Can some one please tell me the file size limit (if any) while using sftp I am trying to transfer a file ( size is almost 350 MB ) but it fails as shown below. sftp> put file1 ./file1 Uploading file1 to /dir1/./file1 file1 25% 100MB 10.2MB/s 00:28 ETA Couldn't write to remote... (6 Replies)
Discussion started by: vikash_k
6 Replies

3. Red Hat

Loggin SFTP activity for chrooted (rssh) users

Hi, I need to log the activity of my SFTP (RHEL 5.4). I have this in /etc/sshd/sshd_config: Subsystem sftp /usr/libexec/openssh/sftp-server -f LOCAL5 -l VERBOSE And this in /etc/syslog.conf: LOCAL5.* /var/log/sftp.log When I log in... (1 Reply)
Discussion started by: Tr0cken
1 Replies

4. UNIX for Advanced & Expert Users

chrooted SFTP upload folder

Hi List, I have set up a chrooted SFTP setup following the instructions I found on tech republic: /blog/opensource/chroot-users-with-openssh-an-easier-way-to-confine-users-to-their-home-directories/229 I have successfully got it all working and I can download files when logged in via sftp... (0 Replies)
Discussion started by: landossa
0 Replies

5. Solaris

How do files transferred via ftp or sftp gets thier permissions at destination?

We have umask defined under /etc/.login as 022. I have my user specific umask defined in /userhome/.login as 002. I understand ftp will not execute anything at destination, it simply transfers files. But it seem to be using 022 as umask for the files transferred. How does ftp knows what umask... (4 Replies)
Discussion started by: kchinnam
4 Replies

6. UNIX for Advanced & Expert Users

Sftp user chrooted in a directory

Hello, I have a task to create 3 users that must connect only via sftp on a machine, and must have only read access to a certain directory (thay shouldn;t be able to cd anywhere else) The problem is that the directory where these users must have access to, it's already created/owned by another... (0 Replies)
Discussion started by: black_fender
0 Replies

7. Shell Programming and Scripting

How to scp File from root user in one server to say crt user in another server and avoid password?

Can someone help in writing some script through which I can transfer file (scp) from root user in abc server to crt user in hfg server and can give the crt user password in script itself so that it doesn't prompt me every time for password (4 Replies)
Discussion started by: Moon1234
4 Replies

8. Red Hat

SFTP with limit(l) option

Hi, I have sftp installed in some of my corporate servers (test and production). However, I notice that it does not have the limit(l) option for bandwidth limit option. Why is this? Is it because sftp was not installed with other necessary packages? How do I make sftp available with the... (4 Replies)
Discussion started by: anaigini45
4 Replies

9. UNIX for Beginners Questions & Answers

Sftp change file permissions

Hi All, Apologies if this question has been asked before. I havent been able to resolve an issue and would like some help. I am getting files pushed to me via sftp. The files once pushed to my server in folder ABC have -rw------- but I need these files to have the following -rw-rw---- to be... (1 Reply)
Discussion started by: israr75
1 Replies

10. UNIX for Advanced & Expert Users

Change sFTP home directory for particular user and from specific server

Hello Folks, Of course i came here for your favour :) How to set a defalult home directory for sFTP login ( at present users land in to their home directrory) when they connect from specific server. When server(A) sFTP's to Linux server(B) they land to thier home directory. I want... (5 Replies)
Discussion started by: Thala
5 Replies
sftp-server(1M) 					  System Administration Commands					   sftp-server(1M)

NAME
sftp-server - SFTP server subsystem SYNOPSIS
/usr/lib/ssh/sftp-server DESCRIPTION
sftp-server implements the server side of the SSH File Transfer Protocol as defined in the IETF draft-ietf-secsh-filexfer. sftp-server is a subsystem for sshd(1M) and must not be run directly. There are no options or config settings. To enable the sftp-server subsystem for sshd add the following to /etc/ssh/sshd_config: Subsystem sftp /usr/lib/ssh/sftp-server See sshd_config(4) for a description of the format and contents of that file. There is no relationship between the protocol used by sftp-server and the FTP protocol (RFC 959) provided by in.ftpd. EXIT STATUS
The following exit values are returned: 0 Successful completion. >0 An error occurred. FILES
/usr/lib/sftp-server ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsshdu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
sftp(1), ssh(1), ssh-add(1), ssh-keygen(1), sshd(1M), sshd_config(4), attributes(5) To view license terms, attribution, and copyright for OpenSSH, the default path is /var/sadm/pkg/SUNWsshdr/install/copyright. If the Solaris operating environment has been installed anywhere other than the default, modify the given path to access the file at the installed location. AUTHOR
Markus Friedl SunOS 5.10 30 Jul 2003 sftp-server(1M)
All times are GMT -4. The time now is 10:19 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy