HTTP filter, How to?

[vmars]

For my kid-safe internet site ( http://www.ParentPresent.org )
I have written an HTTP filter of sorts, using IE's BHO technology, but it is problematical. for some releases of windows. Plus IE/BHO only works for IE not NetScape.

Proxy approach not viable either, local proxy isn't allowed for HOME accounts for some ISPs (gte.net, Verizon, for example).

What other approaches can i take? I need examples.

Quick and Dirty is fine, just has to be dependable
and work on all windows systems.

Basically, all i want to do is:

Check outgoing request for new URL page.
Check URL request against a TrustFile.
If URL is in TrustFile, go there.
If URL not in TrustFile, require password to continue, ELSE redirect URL request to local page.
I can program in Delphi5
and willing to learn ASM.

Thanks in advance!
...Vern

[TonyT]

The reason some isp's discourage local proxies is bercause many of teh proxy software app default installs have security vulnerabilites. If you study up on these things then you should be able to set of a local proxy and make it work just fine.

You could aslo just use a Hosts file and point all unwanted IP's to localhost and use in conjunction with Content Advisor in IE.

[vmars]

What i really need are
How to's with examples?
Thanks!

[Gamewiz]

http://www.smartin-designs.com/
go there, you could use that, just install it in a directory, and wala, no site will load up.

[vmars]

The HOSTS file can only restrict
whole domain names
not individual sites on that domain.
zdnet.com is probably trustworthy on all levels, BUT:
Maybe http://www.geocities.com/~cleausa/ is ok
Whereas http://www.geocities.com/~slutmama/ is not ok.
So i need to be able to restrict on a lower than domain level.
Thanks!