how to forbid someone to do an ftp outside of my network?

[Raoul Beauduin <raoul.beauduin@xxxxxxxxxxx>]

 After what i read, it really seems too difficult to forbid outgoing ftp.
I would have to forbid all the *ftp, scp, telnet, mail and even web browsing
because of the webmail.
I think we will have to trust these students.


-------- Original Message --------

Subject:	Re: how to forbid someone to do an ftp outside of my network?
Date:	Wed, 19 Feb 2003 14:50:55 +0100
From:	Raoul Beauduin <raoul.beauduin@univ-pau.fr>
To:	psyche-list <psyche-list@redhat.com>

       I am trying to forbid outgoing ftp.
 
 the situation is like this:
 
 we have about 10 pc's connected to a local network 192.168.*.* ("my" network). 
we are going through a firewall to connect to internet.
 I want some students not being able at all to make an outgoing ftp to some 
foreign host and drop sensitive sources. but when i connect on their machine, 
i want to be able to make an any ftp i want.
 the deny of outgoing ftp must on be only for these students.
 
 
 
 -------- Original Message --------

Subject:	how to forbid someone to do an ftp outside of my network?
Date:	Wed, 19 Feb 2003 14:22:10 +0100
From:	Raoul Beauduin <raoul.beauduin@univ-pau.fr>
To:	psyche-list@redhat.com

I looking for a way to forbid someone to make an ftp on a host outside 
of my network without removing the ftp client from the computer.
How can I do that?
RB