Every 3 hours it checks the fastest server again. Normally is choosing automatically the fastest with the options you set (IPv4, IPv6, DNSCrypt, DoH, DNSSEC, NoLog, NoFilter). For decentralization dnscrypt-proxy uses a pool of random servers from a public list. The dns traffic on the lan side is not encrypted because the most client's OS currently does not support this. If you allow to register dhcp leases you can reach your clients via their hostnames and do not need to know their ip addresses. The reason behind that scenario is unbound dns can act as a dns-resolver for your lan with all his features. Unbound dns forwards all queries to dnscrypt-proxy while itself is listening on all interfaces on port 53 (IPv4 + IPv6) and handle the dns requests for the local network unencrypted. Here the answer from the developer of DNSCrypt, Frank Denis:ĭnscrypt-proxy is only listen on the localhost addresses 127.0.0.1 (IPv4) and ::1 (IPv6) on port 5353 and handle the dns requests to the internet encrypted. Currently only Cloudflare and Firefox have implemented ESNI for testing. This technique prevents not against ISP-censorship !!! because your browser requests for https has the Server Name Indication (SNI) unencrypted. Resolvers check the digital signature of dns responses.ĭNSBL = Domain Name System Blacklists with RPZ (response policy zone) to block ads, trackers and malware domains. Resolver on the internet often use ports like 443, 4443, 5443 or 8443 and is currently not standardized but has more privacy features.ĭNSSEC = DNS Extension that allows a client to validate the dns response on supported domains and TLDs. DoH is standardized through IETF and standardport for resolvers is 443. It encrypts the traffic and prevents dns spoofing or man-in-the-middle-attacks.
Thanks to mimugmail This plugin supports DNSCrypt ( ) and DNS over HTTPS (DoH) with DNSSEC and DNSBL.ĭNSCrypt or DNS over HTTPS = protocol that authenticates communications between a dns-client and a dns-resolver.
Since opnsense 18.7.9 it is possible to use encrypted DNS with the opnsense-plugin "os-dnscrypt-proxy".
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