🚀 go-pugleaf

BTW, I've tried using the Indy Proxy sample, although it is not working...or
at least nothing happens when I adjust the IE proxy settings...!!!
any ideas on how to use the Indy proxy example to achieve my task...

thanks in advance



"Yahia El-Qasem" <Yahia.El-Qasem@mgh.metro-ag.de> wrote in message
news:3f2ce207$1@newsgroups.borland.com...
> Is it necessary to filter all URLs or is it acceptable if someone bypasses
> the filter ( i.e. by removing / changing the proxy setting from their
> browser ) ?
>
> If the last is not ok you will have to setup a proxy system like some ISPs
> do :
>
> Put your proxy on a dedicated machine inbetween the network and the
> connection to the internet : internal router <-> your proxy <-> internet.
> the internal router should be configured to route all outgoing network
> traffic to your proxy...
> there you have the ability to filter everything you want even without any
> proxy setting in the user's browser...
>
> IIRC Indy comes with an example for a simple proxy server... perhaps this
is
> a good starting point...
>
>
> If you can't do such a setup and need to run on the user's computer
locally
> then you will have to write some sort of low-level filter ( below
WinSock )
> which really need a lot of time ( I don't know of any good library for
> this ) and is pretty hard to get working under a broad range of network
> setups... and the users could easily remove it ( depending on which OS is
> running )...
>
> If you need to filter any URL and not only HTTP then you will end up
writing
> some sort "mini-firewall" which in turn will take a lot of time - IIRC
there
> was a thread in .internet.winsock or so where somebody wanted to learn
> writing a firewall and got some links with firewall source code as a
> starting point.
>
> Yahia
>
>