porn-blocking proxy services?

High bandwidth subscription porn-blocking proxies/web-filters?

I've acquired responsibility of a number of widely dispersed field internet kiosks.  The machines are windows XP and are locked down as much as steady state will allow.  I need to enable porn blocking sooner, rather than later.

I'm looking for a proxy or webfilter service that I can subscribe them to, but I've not had luck - other than the standard subscription services that exist to circumvent what I'm trying do.  I'd consider setting up my own at head quarters, but bandwidth issues would be a problem.

Things like individualized NetNanny installations are something I'd like to avoid.
Marketing_InsistsAsked:
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Frosty555Commented:
One thing I have used in the past which I found worked pretty good is OpenDNS.

It's not a proxy, rather it's a DNS server, but if you register an account with them and set the computer/routers up to use openDNS servers for dns resolution, you can configure your OpenDNS account to block various unwanted websites such as obvious spyware / phishing, porn, gaming websites, etc.

You can even customize the "block" page to have a company logo on it so it isn't obvious that OpenDNS is the system being used.

I'm using this in a small classroom that I teach at and it works perfectly.

The blocking is circumvented by manually changing the DNS servers on the computer to something else (e.g. google's DNS server), however if you lock down the computer so that network connections are not accessible by the user than this shouldn't be a problem.


www.opendns.com

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Frosty555Commented:
Oh the other nice thing about opendns is that it also can be setup to block most popular "anonymizers" and other web based proxies, so if a user attempts to use an anonymizer of web fetcher to retrieve the banned website they will usually get blocked as well.
BoguezCommented:
The advantage of using Keyword filtering, is that it can block web pages containing specific content, like pornography, without depending on any database, like URL Blacklist. Also, it will block a web page, even if it is being accessed through an anonymous proxy, provided it is not an HTTPS connection.

http://www.safesquid.com/
Marketing_InsistsAuthor Commented:
OK, already have openDNS running with a demo account and the boss is happy.

Safesquid looks interesting too. #   Real-Time Website Profiler and Pornographic Image Filter.  Dynamic IP client built in - good potential for nth degree customization.
LifeLearnerCommented:
I know this thread is very old but one suggestion is to use Norton ConnectSafe
https://dns.norton.com/configureRouter.html

I find using their DNS servers very helpful.
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