What is a DNS proxy?
A DNS proxy is a tool that forwards DNS queries and responses between DNS clients (like computers) and DNS servers, which translate domain names into IP addresses. It acts as an intermediary, using its own IP address to handle requests. By caching previous DNS lookups, a DNS proxy speeds up future queries, improving performance. Organizations often use DNS proxies to streamline network management and boost efficiency in resolving domain names.
See also: DNS hijacking, DNS query, reverse DNS
DNS proxy benefits
- A DNS proxy has a cache that stores domain names accessed in the past. This results in a faster traffic connection whenever you want to look up the same domain names in the future.
- Organizations benefit greatly from DNS proxies because they can reduce network latency.
- DNS proxies provide fast response times.
- A DNS proxy can protect your network from cyberattacks, such as DNS spoofing and domain hijacking.
How does a DNS proxy work?
A DNS proxy acts as an intermediary between a client and a DNS server, handling DNS requests by forwarding them to the appropriate DNS servers or providing cached responses. When a user types a domain name into their browser, the DNS proxy intercepts the query, checks its cache for the corresponding IP address, and returns the result. If the IP is not cached, the proxy forwards the request to an external DNS server, retrieves the IP address, and sends it back to the user, while storing it for future queries. This helps reduce DNS lookup time, enhance security, and allow content filtering or monitoring.
