John Jolet <john <at> jolet.net> writes:


> > http://www.gentoo.org/doc/en/security/
> > security-handbook.xml?part=1&chap=12#doc_chap1
> > The section on Squid would apply particularly to you.


> > In this case, my policy states:
> >     * Surfing (HTTP/HTTPS) is allowed during work hours (mon-fri 8-17 and
> > sat 8-13), but if employees are here late they should work, not surf
> >     * Downloading files is not allowed (.exe, .com, .arj, .zip, .asf, .avi,
> > .mpg, .mpeg, etc)
> >     * We do not like banners, so they are filtered and replaced with a
> > transparent gif (this is where you get creative!).
> >     * All other connections to and from the Internet are denied.

> would it be possible to see an example of the squid config that does this?

As stated above:
www.gentoo.org/doc/en/security/security-handbook.xml?part=1&chap=12#doc_chap1


I'm still testing my raw setup of iptables. When I'm done and
 somewhat satisfied
with my iptables setup, then, I'll be drilling into the Application Level 
Gateway
implementaion, squid being one possibility. I intend 
to document what I end
up with, as most of what's on the net is old/dated and 
does not use the latest
features of iptables or they are trite examples such as a
 dual ethernet based
firewall....

Hopefully, google & searches will return many examples of ALG setups, 
but, they may not be specific enough to Gentoo......... 
If sufficient examples do not exist, we should share information on this
list, and create a detailed, Gentoo Specific web page for 
iptables howto + ALG howto, as they need to work together
with tight synchronization.

Yet others may suggest shorewall + squid, but, I do not have any
interest in shorewall.  IPfilter/netfilter, is portable (somewhat)
to embedded linux systems and other embedded derivatives,
and that is my ultimate focus. 



hth,
James






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