Jim and all,

Thanks for taking the time not only to post to these forums, but to help
me better understand Linux & networking concepts by explaining things in
a succinct and informative manner.  It's great to be in the company of
so many people that know their Stuff!

- Jason


On Fri, 2004-04-30 at 14:07, [EMAIL PROTECTED] wrote:
> Jason,
> 
> I think trying to lock down Mozilla is a difficult thing.  Once you lock 
> it down, the user will find Konquerer or Galeon or some other browswer 
> and you'll be chasing that problem forever.
> 
> I think Kai's suggestion of using an iptables rule to limit access to 
> port 80 to ONLY the squid user-id is what you'd want.
> 
> That way, you can setup a transparent squid proxy so that ALL browser 
> port 80 traffic gets redirected to the squid proxy.
> 
> Jim McQuillan
> [EMAIL PROTECTED]
> 
> 
> 
> On Fri, 30 Apr 2004, Jason Young wrote:
> 
> > Guys,
> > 
> > Just one last thing.  With the Squid-based solution that would seem to
> > work, but requires configuration of proxy settings on the browser, would
> > performing a chown & chmod of the user's "prefs.js" file in their
> > mozilla folders with a script, rendering it non-writable by the users
> > work?  I'm admittedly no more than a power-user when it comes to Linux,
> > so I don't know what the possible ramifications of this approach would
> > be, but I tried it on a machine at home & it appeared to work.
> > 
> > - Jason
> > 
> >  
> > On Thu, 2004-04-29 at 23:54, [EMAIL PROTECTED] wrote:
> > > On Thu, 29 Apr 2004, Jason Young wrote:
> > > 
> > > > Jim,
> > > > 
> > > > I might be mistaken, but couldn't Varun apply any needed filters on
> > > > Shorewall to achieve this; for instance, applying an accept rule on port
> > > > 80 for the IP address of his local Web server while denying all other
> > > > destination IPs?
> > > 
> > > Well, we should probably get Varun back into this conversation, but I 
> > > think he wants some users to be get internet access via his squid cache, 
> > > while he wants other users to NOT be able to run mozilla to get outside 
> > > web pages.
> > > 
> > > if both Squid and Mozilla are running on the same box, how do you allow 
> > > Squid to get  outside web pages, while NOT allowing Mozilla ?
> > > 
> > > You can configure Mozilla to go to the squid cache, but a smart user 
> > > will figure out how to re-configure mozilla to get around the squid 
> > > proxy.
> > > 
> > > Ultimately, I think he needs to run squid on a different machine.  Then, 
> > > his firewall could block port 80 access from the LTSP server, but allow 
> > > port 80 access from the squid server.
> > > 
> > > Then, he could use squid rules to allow/deny internal machines from 
> > > accessing external web sites.
> > > 
> > > Jim.
> > > 
> > > 
> > > 
> > > 
> > > > 
> > > > - Jason
> > > > 
> > > > 
> > > > On Thu, 2004-04-29 at 22:25, [EMAIL PROTECTED] wrote:
> > > > > I'm thinking that Varun needs his users to have browser access to pages 
> > > > > on the local server, but he doesn't want them browsing the internet
> > > > > 
> > > > > So far, nobody has addressed that problem.
> > > > > 
> > > > > Jim McQuillan
> > > > > [EMAIL PROTECTED]
> > > > > 
> > > > > 
> > > > > On Thu, 29 Apr 2004, Jim Glutting wrote:
> > > > > 
> > > > > > Hi Varun,
> > > > > >        It you use a window manager like icewm, there are no icons
> > > > > > on the desktop.  All programs are launched from the Start menu
> > > > > > or the taskbar.  You control what goes on the Start menu thru a
> > > > > > text file, and only put the references to programs that you want
> > > > > > them to have.  So if you don't put a browser on the menu, they
> > > > > > cannot run an internet browser.
> > > > > > 
> > > > > > Hope that helps
> > > > > > JAG
> > > > > > 
> > > > > > Varun wrote:
> > > > > > 
> > > > > > > Hello,
> > > > > > >        I want to put my ltsp4 server and squid proxy server
> > > > > > > on the same machine.
> > > > > > > I want internet access only for non ltsp clients.
> > > > > > > I want no ltsp clients to have internet access.
> > > > > > > Is there any config available in ltsp ?
> > > > > > >
> > > > > > > Thanks
> > > > > > >
> > > > > > > Varun
> > > > > > >
> > > > > > >
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> > 
> > 
> > 
> > -------------------------------------------------------
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> > For additional LTSP help,   try #ltsp channel on irc.freenode.net
> > 
> 



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