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creating new users and limiting their access?
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Author:  neutron68 [ Wed Jul 02, 2008 4:32 pm ]
Post subject:  creating new users and limiting their access?

Since my mythtv computer is the closest thing I have to an FTP server running in the house, I have created an account for a friend and plan to put files in the /home/friend folder for them to retrieve.

Because this user is a novice Windows user and I have no hope of them being able to figure out SSH and Linux command lines, I plan to have them use WinSCP to get to the /home/friend directory.

I found this page on how to make a new user account and created a friend account with password:
http://oreilly.com/catalog/debian/chapt ... 07_01.html

By default, I believe they have read/write access to their /home/friend directory. I wonder if I can limit this friend account so they can't read, write or delete files outside their /home/friend directory - thus protecting the rest of my Mythbox?

Eric

Author:  slowtolearn [ Wed Jul 02, 2008 7:45 pm ]
Post subject: 

I don't know which FTP server you are using (I believe KM installs wuftp, not sure), but what you are looking for is referred to as "jail". A Google for <FTP server> jail users should get you what you are looking for, perhaps this one helps?

Author:  cliffsjunk [ Wed Jul 02, 2008 8:23 pm ]
Post subject:  Re: creating new users and limiting their access?

neutron68 wrote:
I plan to have them use WinSCP to get to the /home/friend directory.


I think you will find that they can just use Internet Explorer with your
url like this:
Quote:
ftp://123.123.123.123
and enter their user and password when prompted.... or use a url
with embedded username and password like this:
Quote:
ftp://user:password@123.123.123.123
You could even set them up a desktop link that runs iexplore on that url.

You should find that the username they use sends them directly into
their home directory.

Cliff

Author:  neutron68 [ Thu Jul 03, 2008 7:52 am ]
Post subject:  SSH, actually

Thanks for the responses. I think I led you astray by saying ftp. I'm not actually going to load an ftp server, but use SSH for the access and have the friend use WinSCP to access the SSH.

After they are into the machine, I simply want to keep them from bumbling around and deleting files, etc.

I'm still not sure how I can limit their access to various directories.

Eric

Author:  slowtolearn [ Thu Jul 03, 2008 9:14 am ]
Post subject:  Re: SSH, actually

neutron68 wrote:
Thanks for the responses. I think I led you astray by saying ftp. I'm not actually going to load an ftp server, but use SSH for the access and have the friend use WinSCP to access the SSH.

After they are into the machine, I simply want to keep them from bumbling around and deleting files, etc.

I'm still not sure how I can limit their access to various directories.

Eric
Same concept (jailed), see http://www.linux.com/articles/61387 for example.

Author:  neutron68 [ Fri Jul 04, 2008 11:48 am ]
Post subject:  Re: SSH, actually

slowtolearn wrote:
Same concept (jailed), see http://www.linux.com/articles/61387 for example.

The article mentions starting with OpenSSH and adding the SSHJail patch to it.
Is OpenSSH the version of SSH that is built into Knoppmyth R5F27 already? (so I don't need to download and compile OpenSSH?)

Author:  cecil [ Sat Jul 05, 2008 5:30 pm ]
Post subject: 

Yes, OpenSSH is included by default.

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