[GLLUG] content filtering

[Michael George]

It's a multi-user system.  There could be multiple users at any given
time.  Don't get me wrong, I think the logging is a good idea, but it's
not perfect.  However, when trying to monitor web usage, there is no
"perfect".

On Tue, April 1, 2008 1:50 pm, Karl Schuttler wrote:
> Cross reference with who was logged on at that time?
>
> On Tue, Apr 1, 2008 at 1:46 PM, Michael George <george at idealso.com> wrote:
>>
>>  On Tue, April 1, 2008 1:36 pm, Karl Schuttler wrote:
>>  > If you need somewhere to store logs and stuff like that, be aware
>> that
>>  > you can samba mount stuff with ddwrt and openwrt, so you could just
>>  > have it automount the samba partition and store stuff there.
>>
>>  True.  And for that matter, I can tell it to ship the logs off to a
>> syslog
>>  server.  As long as it will log with the detail I'd need.  The downside
>> is
>>  that the router (probably) won't know who the user is that is sending
>> the
>>  requests.
>>
>>
>>
>>  > On Tue, Apr 1, 2008 at 8:34 AM, Michael George <george at idealso.com>
>> wrote:
>>  >> I'll look at the openwrt site and see what I can find for modules.
>> I
>>  >>  understand that dd-wrt is based on it and can use its modules, but
>> they
>>  >>  will have to be hand-configured.
>>  >>
>>  >>  Do you know of any "recipies" for setting up firewall rules on a
>> server
>>  >> to
>>  >>  run transparent/forced proxy?  I'm hoping for a solution that
>> doesn't
>>  >>  require me to dig knee-deep into learning firewall rules...
>>  >>
>>  >>  I'm also quite happy with a multi-layered approach.  I can use
>> OpenDNS,
>>  >>  and dansguardian, and the log files.  Putting the system in a
>> public
>>  >> place
>>  >>  is probably one of the best moves, but there are some physical
>>  >>  complexities going in that direction...
>>  >>
>>  >>  Hmm, I bet I can get a boot CD that will fire up the system and do
>> the
>>  >>  same things that LTSP does over wireless...  I'll have to look into
>>  >> that
>>  >>  option.  Then I can put the system in more places in the house
>> without
>>  >>  stringing more ethernet cables...
>>  >>
>>  >>
>>  >>
>>  >>  On Mon, March 31, 2008 11:37 pm, Richard Houser wrote:
>>  >>  > -----BEGIN PGP SIGNED MESSAGE-----
>>  >>  > Hash: SHA1
>>  >>  >
>>  >>  > Michael George wrote:
>>  >>  > | It's time I get more serious about content filtering at home,
>> now
>>  >> that
>>  >>  > my
>>  >>  > | kids are able to get online.
>>  >>  > |
>>  >>  > | I know there is the dansguardian/squid proxy filter, but I
>> don't
>>  >> want to
>>  >>  > | jump immediately to an approach that requires another computer.
>>  I
>>  >> use
>>  >>  > | LTSP for myself and for the kids, so we're all on the same
>> system
>>  >>  > | (therefore I can't just use mine as the proxy server).
>>  >>  > |
>>  >>  > | I've heard of OpenDNS for DNS-level filtering, but I'm not sure
>> if
>>  >> that
>>  >>  > | will have some loopholes that I hadn't though of...
>>  >>  >
>>  >>  > For starters, a loophole is that someone can just bypass DNS.  It
>>  >>  > wouldn't be convenient, but is still relatively easy to do if
>> your
>>  >> kids
>>  >>  > are so inclined.  They certainly won't fall into that loophole by
>>  >>  > accident, however, so with good parenting, I don't think this
>> would
>>  >> be
>>  >>  > an issue.
>>  >>  >
>>  >>  > | I should have thought ahead more when I got my router.  I put
>> in a
>>  >>  > Linksys
>>  >>  > | WRT54GL running dd-wrt just recently.  I'm happy with it so
>> far,
>>  >> and it
>>  >>  > | will facilitate a transparent proxy, but it doesn't implement
>> one.
>>  >>  > Since
>>  >>  > | I only use it for basic router and firewall tasks, it would be
>> nice
>>  >> to
>>  >>  > | have a content filtering proxy built into it.
>>  >>  > |
>>  >>  > | Anyone here have opinions/advice?  Thanks!
>>  >>  >
>>  >>  > I don't know about your kids, but have you looked into providing
>>  >> either
>>  >>  > a mostly open internet connection (regarding http port 80/443)
>> with
>>  >>  > logging for later review OR a whitelist based approach?  I don't
>> know
>>  >>  > about dd-wrt, but if you were running OpenWRT that should
>> certainly
>>  >> be
>>  >>  > doable (especially with the up to 2GB flash storage you can put
>> in
>>  >> the
>>  >>  > GL).
>>  >>  >
>>  >>  > Also, since you are running on the same system, you CAN use your
>>  >> machine
>>  >>  > as the proxy.  When on the same machine, you can use firewall
>> rules
>>  >> to
>>  >>  > force certain users to use the proxy and allow others open
>> access.
>>  >>  > While still on the same machine, I think this is the best option.
>>  >>  > -----BEGIN PGP SIGNATURE-----
>>  >>  > Version: GnuPG v1.4.7 (GNU/Linux)
>>  >>  > Comment: Using GnuPG with Mandriva - http://enigmail.mozdev.org
>>  >>  >
>>  >>  > iD8DBQFH8a3mUMkt1ZRwL1MRAjDYAJ9+lHH0t+XK+/lT3SCADkxLvok3AgCglh9l
>>  >>  > ql2l5Ej5l4zqketet3lSJhk=
>>  >>  > =mNuB
>>  >>  > -----END PGP SIGNATURE-----
>>  >>  >
>>  >>
>>  >>
>>  >>  -Michael George
>>  >>
>>  >>
>>  >> _______________________________________________
>>  >>  linux-user mailing list
>>  >>  linux-user at egr.msu.edu
>>  >>  http://mailman.egr.msu.edu/mailman/listinfo/linux-user
>>  >>
>>  >
>>
>>
>>  -Michael George
>>
>


-Michael George