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One accout for FTP other to TELNET


 
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Special Forums Cybersecurity One accout for FTP other to TELNET
# 1  
Old 06-28-2002
One accout for FTP other to TELNET

Hi All,
If I want to have two user accounts from the same grop in UNIX Solaries. However, I want one of them to be used only for FTP while the other for TELNET. Can anybody tell me how to do that?
Best Regards
# 2  
Old 06-28-2002
Don't open three threads to ask the same question. I deleted the other threads.

To create an account that can be used only for ftp, I would make the shell "/usr/bin/true". Yeah, you can still telnet in, but you can't do anything and you will disconnect immediately. For such a user to be able to use ftp, "/usr/bin/true" must be added to the file "/etc/shells".

To create an account that can be used by telnet, but not ftp, give this user a regular shell like ksh. Then add it to the file /etc/ftpd/ftpusers. This file, which is badly named, is a list of users who cannot use ftp.

And sure, both users can be in the same group if you want.
# 3  
Old 06-28-2002
First of all sorry for putting the same question three time. But I did not know where excatly it fits. Therefore, I opologize for that.

Second, Thank you very much for your valuable reply. However, I need some clarification please.

For the user that can only telnet I just have to add his name to /etc/ftpd/ftpusers. Is this what you mean?

For the user that can only ftp. I did not get your point. What do you mean by creating shell "/usr/bin/true". I mean in the /etc/passwd file I just write shell "/usr/bin/true" in the shell space and add a line with shell "/usr/bin/true" in "/etc/shells file?

Thank you again
Best regards
# 4  
Old 06-28-2002
Yes just add the user to /etc/ftpd/ftpusers.

Yes in /etc/passwd, make the last field be /usr/bin/true:

uftp:x:123:456:ftp only user:/home/uftp:/usr/bin/true

And yes, add
/usr/bin/true
to /etc/shells.

If /etc/shell does not exist, you must create it and add a line for all possible shells. ftpd will check this file and will kick out anyone whose shell is not in this file.
# 5  
Old 06-28-2002
Hi,
Thank you again...
I am using Sun 5.6, and I did not find both /etc/ftpd/ftpusers (I even did not find the directory /etc/ftpd) and etc/shells. So, do I have to create both of them (using the root account)? If yest. can you please tell me their format?
Finally, where to add this line
uftp:x:123:456:ftp only user:/home/uftp:/usr/bin/true

Thank you very much for your valuable help
# 6  
Old 06-28-2002
That line was just an example a line from /etc/passwd. The files are text files. Just type them in with an editor.
# 7  
Old 06-29-2002
MySQL

Thank you very much...
it works perfectly

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