Your computer or phone is configured to point to a DNS server so when you type in a domain name in the web browser, it can find the IP address from the DNS server and route the traffic to that IP address. DNS servers store databases that contain mappings for domain names to their respective IP addresses. Therefore, IP addresses don’t have to be remembered by people. DNS allows names to be mapped to IP addresses. Internet routers need IP addresses to send traffic to their correct destination on the Internet, but people can’t possibly remember these. The problem is that people can’t remember these long numeric values. IP addresses are what the routers that interconnect all the networks that make up the Internet understand. All websites are hosted on servers that use IP addresses in decimal or hexadecimal format (i.e., 190.4.1.1 or FE80:CD00:0000:0CDE:1257:0000:211E:729C). To understand the benefit a DNS sinkhole can provide, it’s important to first understand the basics of how DNS works.ĭNS is the speed dial app of the Internet.

Use a service or already existing DNS sinkhole framework Instructions for setting up a DNS sinkholeĬan set up with DNS server, app, or hosted service Leverages existing features of DNS to block malicious domains by blackholing traffic Servers are queried until the name is resolvedĭNS can’t distinguish between normal versus malicious traffic. Resolves IP addresses from names of websites.

Dns blackhole