Block Malicious and Adult Web Sites with DNS Filtering

by | May 2, 2022

One of the best ways to keep malware from infecting your computers is to avoid visiting websites designed to do just that. No one intentionally visits loadmetogetinfected.com, but malware authors employ all sorts of tricks to lure unsuspecting users into viewing malicious sites. Various tools can help, but the easiest technique is called DNS filtering. DNS, which is short for Domain Name System, is the Internet technology that maps human-readable computer names like www.apple.com to the numeric IP address of Apple’s server, 17.254.0.91. Every time you click a link to visit a new Web page, your Mac queries a DNS server to learn the IP address associated with the domain name embedded in the link—it all happens seamlessly and instantaneously in the background. Typically, your Mac will automatically use the DNS servers specified by your Internet service provider. However, you can change your DNS servers manually, and one good reason to do so is to take advantage of DNS servers that look at your Mac’s DNS requests and refuse to resolve names associated with malicious sites. Such DNS filtering is great since it protects you from malicious sites without you having to do anything special. Such sites simply won’t load at all. One more thing. DNS filtering can also block porn sites. That’s helpful if you want to avoid accidentally loading adult content or to ensure that those in your office don’t, in order to reduce the chances of a sexual harassment complaint. As with malicious sites, filtered adult sites just won’t load. Get in touch with us if you'd like to learn more about implementation options.