Try "smoothwall" ...|
> Date: Thu, 22 Jan 2009 07:46:03 -0600
> From: bruno wolff to
> To: ignored_mailbox yahoo com au
> CC: fedora-list redhat com
> Subject: Re: firewall url filter
> On Fri, Jan 23, 2009 at 00:08:28 +1030,
> Tim <ignored_mailbox yahoo com au> wrote:
> > On Thu, 2009-01-22 at 09:38 +0100, roland wrote:
> > > The client wants to prevent users to connect to sex sites.
> > >
> > > Can I use the fedora-box as a firewall, filtering several url's or
> > > filtering several keywords?
> > You can do that sort of thing. A simplistic overview of how is:
> > Use the firewall to block direct the browsers directly connecting to any
> > website (i.e. all outgoing connections to port 80). That'll stop nearly
> > all web browsing, other than sites on other unusual ports. It's not a
> > 100% catchall, but probably 99%.
> That doesn't catch https connections. Of course the firewall wouldn't
> be able to check URLs in that case anyways.
> Depending on the requirements it may be best to block all direct access
> to the outside from the clients machines and only allow access through
> a proxy.
> If there is a know set of web pages they should have access to then they
> can use a whitelist to only allow connections to those web sites. If not,
> trying to block undesirable sites isn't an easy problem to solve in
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