Block Internet for Users

Home Forums Networking General Networking Block Internet for Users

This topic contains 2 replies, has 3 voices, and was last updated by Avatar Anonymous 10 years, 2 months ago.

Viewing 3 posts - 1 through 3 (of 3 total)
  • Author
  • Avatar

    Hello, ive been asked to block internet in a certain company, and allow only pop3 and smtp to be accessed for email. What should be the best solution for that? managed switch ? firewall ? server? the router they have is a normal adsl router.



    Re: Block Internet for Users

    You failed to mention the size of the budget for this. Your going to have a very wide range of options which range from hacks and tricks to full blown solutions.

    Here are… off the top of my head from cheapest to most expensive
    block port 80 and 443 on the firewall
    Push down a fake proxy server to internet explorer, that would render the browser unuseable
    Remove external DNS servers and use only an internal DNS server where you only specify the ip addresses to the domains you want
    Run a real proxy server like squid and configure that accordingly
    Depending on the firewall you use, many small office firewalls have built in web filters
    Or go with a corporate solution like SurfControl or Websense to get more granular with what you block


    Re: Block Internet for Users

    Indeed, you need a firewall in place to do this.
    block all ports except DNS, SMTP, and POP3 and you are done.

    Personally I’m a big fan of ISA server, but Check Point or ASA or any other firewall will help you out.

    What do you currently have, how is your gateway security arranged and what is the budget?

Viewing 3 posts - 1 through 3 (of 3 total)

You must be logged in to reply to this topic.