Restricting rsync over ssh
bob at coldsource.net
Tue Dec 28 15:53:45 GMT 2004
I have very special needs and i wanted to use rsync over ssh. I don't
know if a solution already exists for what i want to do. I want to
provide rsync over ssh to my users. Howevern i want to have the
following limitations :
1. No shell access
2. Limitting users to their home directories
I was thinking to the folowing solution, but i don't know if it is
secure enough :
Create a dummy-shell sor ssh login that only allow the rsync --server
--sender command. Then i get the path of the wanted files, and i appened
it to the home directory of the user. Ex : the user requests /test, i
give him : /home/usrname/test
Then i uses the realpath function to canonicalize the path and i check
that it really begins with /home/usrname to prevent users from getting
files outside of their home directory.
I execute the rsync command with the new built path...
I think this should work but i would like to know what do you think
If this is ok, i will code the dummy-shell and put it online for those
who would like to do similar things...
Thanks in advance, Bob
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