On Sun, 2009-10-25 at 16:42 -0700, Scott Garman wrote:
> Michael Robinson wrote:
> > I want safe mode to be closed to the average person.  If one must enter
> > a password to get into safe mode, that will work.  Changing the source
> > code of firefox is an extreme option that will make it harder to upgrade
> > when new releases come out.  Is there any standard way to protect
> > against safe mode abuse?  Procon Latte is a popular plugin I suspect,
> > but what's the point of it if anyone behind it can pop into safe mode
> > and remove it?  I am surprised that the author of Procon Latte hasn't
> > addressed the safe mode abuse issue.  Ideally, the developers who are
> > going to release the next version of firefox should address the safe
> > mode abuse issue.
> 
> Safe mode exists for a good reason - to prevent Firefox from becoming 
> totally borked by third-party extension code. So while in your 
> particular situation it poses a security risk, I guarantee if it were 
> disabled by default, a far greater percentage of the user base would be 
> inconvenienced. It's a trade-off.
> 
> Procon Latte is likely a good solution for users who do not have the 
> technical know-how or motivation to try running Firefox in safe mode. 
> Content filters are best deployed at the network level, e.g. as a 
> firewall service. Otherwise you're constantly playing a cat and mouse 
> game with other applications the user could install or run to circumvent 
> the content filtering - including by using things such as bootable CDs 
> or USB drives.
> 
> Scott

I get the cat and mouse game problem.  Thing is, what filter is there
that I can implement without a proxy at the network level?  Some sites
don't work through a proxy.  It would be nice if my direct access option
could catch attempts to search for "adult" material etcetera and do
something about it.  To be a direct access option means no proxy though.
I suppose I need to use iptables somehow to reroute packets to a server
side filter program and then inject as appropriate as if nothing had
happened.  I want something transparent.  An option is to simply go and
get the PICS ratings for whatever web site one is trying to reach and
flash a warning if appropriate, but how do I do that transparently and
still provide direct access?

As far as safe mode being an authenticated mode of firefox, I think
that is way too liberal.  I don't suppose in Linux though that one
can restrict what programs can be run.  To do so one would need an
administrator program that registers all the acceptable programs
with perhaps a daemon in the background that gets queried every
time there is a request to execute a program.

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