BIND : DNS over HTTPS : Server Settings

	Configure DNS over HTTPS Server on BIND.
[1]	Get SSL/TLS certificate, refer to here.
[2]	Configure BIND.

root@dlp:~#  openssl dhparam -out /etc/bind/dhparam.pem 3072 root@dlp:~#  cp /etc/letsencrypt/live/dlp.srv.world/{fullchain.pem,privkey.pem} /etc/bind/ root@dlp:~#  chown bind:bind /etc/bind/{fullchain.pem,privkey.pem,dhparam.pem} root@dlp:~#  vi /etc/bind/named.conf.options // add settings for certificate tls local-tls { key-file "/etc/bind/privkey.pem"; cert-file "/etc/bind/fullchain.pem"; dhparam-file "/etc/bind/dhparam.pem"; }; http local { endpoints { "/dns-query"; }; }; options { ..... ..... dnssec-validation auto; // add and change like follows listen-on tls local-tls http local { any; }; listen-on-v6 tls local-tls http local { any; }; }; root@dlp:~#  systemctl restart named

[3]	Verify Name Resolution with HTTPS on localhost.

root@dlp:~#  dig +https @127.0.0.1 dlp.srv.world. ; <<>> DiG 9.20.11-4-Debian <<>> +https @127.0.0.1 dlp.srv.world. ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63633 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1232 ; COOKIE: 87d2b84500e14f6c0100000068a3cc2f18c333501abe8aba (good) ;; QUESTION SECTION: ;dlp.srv.world. IN A ;; ANSWER SECTION: dlp.srv.world. 86400 IN A 10.0.0.30 ;; Query time: 0 msec ;; SERVER: 127.0.0.1#443(127.0.0.1) (HTTPS) ;; WHEN: Tue Aug 19 09:58:23 JST 2025 ;; MSG SIZE rcvd: 86