Re: Url Block

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: Tom Shelton (tom_at_YOUKNOWTHEDRILLmtogden.com)
Date: 02/10/05 

Date: Thu, 10 Feb 2005 08:41:13 -0800

In article <uDdXkByDFHA.2804@TK2MSFTNGP14.phx.gbl>, Lespaul36 wrote:
> It is for my nephew...he has been getting in a bit of trouble and is
> restricted on his computer use. In the past I have tried a few of the
> parenting products out there, but they over did it and then I couldn't seem
> to remove them, was a real pain in the but.
>
> He uses IE and he can't install software. I thought there was a way to
> block sites using Security Policies, but haven't been able to find much out
> about it. I was thinking there might even be a way to do it with IE itself,
> but no luck.
>
> I was interested in finding out how a program like that would work also to
> further my knowledge. As far as being easier in C#, don't all .net
> languages have the same access to the CLR. I do know c#, but I am more
> comfortable with vb.
>

The main reason that working with raw sockets may be a little easier in
C# is it's ability to use direct memory access (aka, real pointers) via
the unsafe keyword. It's not impossible in VB.NET - but it would be
slower and not as clean.

I would avoid raw sockets. You can write a proxy server - but you'll want
to get familiar with the RFC's related to http. Really, the easiest and
most practicle way is to setup a firewall and filter from there. If you
can't find a reasonably priced hardware firewall that has this ability -
you can always use something like FreeBSD. The nice thing is that you
don't need much of a machine to run it. I'm running FreeBSD 4.11 as a
firewall on a Pentium 200 box with 128MB of RAM and 4GB harddrive. 

-- 
Tom Shelton [MVP]
OS Name:                   Microsoft Windows XP Professional
OS Version:                5.1.2600 Service Pack 2 Build 2600
System Up Time:            0 Days, 0 Hours, 1 Minutes, 11 Seconds

Relevant Pages

  • Re: Hacking to Xp box
    ... Raw sockets, MS05-019 and Windows Firewall -- Summary ... If>there is a firewall in place,>which attacks are possible through a network? ... >>-->>Audit your website security with Acunetix Web Vulnerability Scanner:>>Hackers are concentrating their efforts on attacking applications on your>website. ...
    (Pen-Test)
  • Firewall & DSL performance
    ... I have a dedicated older box that is running Freebsd 4.7-stable, ... ethernet adapter plugged into the dsl jack (we don't have /need ... firewall is another 3com 10Mb which is plugged into my Linksys ... at the jack inside also yielded 1.5Mb. ...
    (freebsd-questions)
  • firewall question
    ... I've been playing with setting up a firewall. ... The firewall PC is running FreeBSD 4.4 with the default 'simple' firewall ... talking to an internel network of two PCs. ... However as soon as I shut down the Win98 box or unplug it ...
    (FreeBSD-Security)
  • Re: 99.9 % of Software/Hardware Firewalls DO-NOT.....
    ... While you decide to take the easy route and go the TH argument that others have ... thrown out, you still demonstrate a lack of ability to address the real points. ... Pick a firewall, your choice, as I'm sure there's at least ...
    (comp.security.firewalls)
  • New Advanced Firewall Suggestions?
    ... Am I looking for firewall appliance suggestions based on the ... - Proxy/packet filter hybrid firewall technology. ... Ability to use either proxy or packet filter ... - VPN, both IPSEC and PPTP ...
    (comp.security.firewalls)