Your computer uses DNS to look up the IP address of a domain before it can connect. DNS does exactly the same thing but for domains. If you want to know a person’s phone number, you need to look it up before you can dial the number. This is where DNS fits in.ĭNS is like a phone book. They need to know the IP address of a domain like first. Computers don’t communicate over networks with names. When you use your browser to lookup, your computer needs to find out where is. It is beyond the scope of this post on how to install Pi-hole, so just follow the instructions on the Pi-hole website to get started. I didn’t have a Raspberry Pi at the time I began using Pi-hole, so I installed it on an Ubuntu machine I had instead. I am no expert further insight by experts in this field would be greatly appreciated.Pi-hole is a fantastic piece of software which kills a huge number of ads and other bad stuff™ from your network. Either way your records are as private as the integrity of your chosen providers, and your device, which is always the case anyway. Summing up, using VPN DNS puts attack surface squarely on their side, and on the integrity of your device, with potential DNS leaks (adding the directive, block-outside-dns, to your openvpn configuration can fix this) Using DNScrypt brings more attack surface on your side but protects against DNS leaks, and host blocklists can reduce exposure to malware exponentially. As for security benefits, using DNSCRYPT along side a VPN can enhance your security by giving you the option to implement your own blocklists to ensure malware domains and trackers are avoided over VPN. Logging is one of the primary factors VPN users ensure their providers are NOT doing. Bear in mind there will be more DNS logs accessible on your system(s) if logging is enabled for DNSCRYPT & any other Stub resolver, such as DNSMASQ. So make sure you test and look before you assume anything. Some DNSCRYPT servers use Google as an upstream and or companion (safebrowsing / adblock) server, as you will witness in DNS leak tests. Splitting the stream could result in enhanced security or possibly less, it totally depends on the VPN provider and the DNSCRYPT provider. Given DNSCRYPT ensures zero DNS leakage, every query is encrypted and signed, technically you could use a dedicated DNSCRYPT/DNSSEC server for DNS query's, and a dedicated VPN for data traffic, breaking DNS and data into two separate streams. It is for these two reasons I stopped using it. DNSSEC overhead also noticeably increases latency. After months of use, I only found one obscure domain that was truly 'validated' by DNSSEC. Because this is a feature that must be enabled on a per-domain basis, and because very few domains have implemented DNSSEC, this makes DNSSEC largely redundant, until adoption increases. Countering this drawback, DNSSEC validates the entire chain of command from upstream to downstream, and is implemented at the domain level, making it impossible to forge. Security depends on the quality of the results obtained by your preferred DNSCRYPT server, given the server itself has not been compromised. DNSCRYPT servers also remove any identifying data that could be sent upstream, and often offer "No forwarding to external/upstream DNS servers (recursive)"įrom what I have gathered, DNSCrypt on its own may not be 100% secure. That means it cannot be viewed or successfully tampered with on the way to and from the downstream DNScrypt server. Securely configured DNScrypt servers and clients DO ensure zero DNS leakage.
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