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# 1  
Old 09-14-2001
Ftp

Is there any way i can disallow an ftp Login to change current working directory??
# 2  
Old 09-15-2001
Yes, with the proper restricted environments using utlities like chroot. You basically do not give the user any ability to cd or to execute commands outside of a very restricted setup.
# 3  
Old 09-16-2001
I just have one more doubt,
I want to diable Telnet for an user , but that user must be able to ftp ....
Wat are the choices i have ...
I tried to stop it in .login . But problem is it logs in using X-server .

1) Can i specify a shell as /bin/false ... so that it cannot login .
Will this work for both X - login as well as telnet ..
# 4  
Old 09-16-2001
If you are using tcp wrappers (tcpd), you can
control what users are allowed to use what
services individually.
Check out the man page host_access(5)

For instance in /etc/hosts.allow...

in.telnetd: ALL EXCEPT jsmith@some_host
in.ftpd: ALL

This would allow Telnet for all EXCEPT user jsmith
and FTP to all. However, you should not get
carried away with user lists since it will
cause a lookup to occurr. Obviously, you also
would NOT want to open these services to "ALL"
so I would recommend further restricting this
by using "LOCAL" or even some IP range that
maps to your internal network (or sub-net).
# 5  
Old 09-16-2001
Watever answer u gave is acceptable for telnet .
But i also do not want the user to login using X11 .. ie. On the console or on a direct terminal
# 6  
Old 09-16-2001
For X11, I would recommend using an authorization
file for X. See xdm(1) and Xsecurity(1) for
details on this. Essentially, this sets up
access control lists for X-Windows.
 

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