Occasionally you may need to block particular third parties from accessing your Internet sites. There are a lot of automatic bots which crawl the Internet, for example, and generate fake visits and traffic. There are also spammers who leave links to shady websites as comments to site articles. This sort of things can greatly undermine your work, as no one likes to visit an Internet site with tons of fake comments, furthermore the increased traffic from both spammers and bots may create high load on the server on which your Internet site is hosted, which could result in your site not working correctly. Among the most effective solutions in such cases is to block the IP addresses which generate the fake traffic, so as to make sure that the visits to your site are legitimate.