blocking url using firefox extension

Question

how can i control access to webpages in firefox. i'm going to develope a new addon for this but colud you tell me what should i do?

can firefox extension programming allows this.

or should i develop a desktop application to control access.

thx in advance.

edit: it's not going to be used daily. will be just an example for a research.

so i want to develop an application/extension that will start to work if a user wants to open a webpage. controls webpage using a webservice, developed before, then open requested webpage or deny and say this webpage cannot be accessed.

sorry for my english.

Answer 1

Firefox addons can always be disable, user could use another browser. Better to use a desktop app. IMHO.

Answer 2

Depending on what you're trying to accomplish, and what the environment looks like, you could for example:

1. Use a custom filter with Adblock to filter out certain URLs
2. Use a filtering HTTP proxy such as Privoxy
3. Use a firewall to block certain remote servers