Can any one assit me with were I can find an example filter module, code or website. That will assit me with creating a filter module that filters the context comming from a client machince. I have some users that I provide internet service to and I want to avoid them from sending spam out through my gateway. The way I see this is I will use Apache is a forward proxy and if the user is on the Yahoo email site and sends out spam, I will filter the context before it gets to the Yahoo server and If it contains spam, I will delete the context. I want to set up a restriction sort of like the restriction of access to certain URLs, but instead a rescrition of outgoing context.
