BIND : Verify Resolution2023/02/21 |
[1] | Start and Enable BIND. |
[root@dlp ~]# systemctl enable --now named |
[2] | If Firewalld is running, allow DNS service. DNS uses [53/TCP,UDP]. |
[root@dlp ~]# firewall-cmd --add-service=dns success [root@dlp ~]# firewall-cmd --runtime-to-permanent success |
[3] | Change DNS setting to refer to own DNS if need. (replace [enp1s0] to your own environment). |
[root@dlp ~]# nmcli connection modify enp1s0 ipv4.dns 10.0.0.30 [root@dlp ~]# nmcli connection down enp1s0; nmcli connection up enp1s0 |
[4] | Verify Name and Address Resolution. If [ANSWER SECTION] is shown, that's OK. |
[root@dlp ~]# dig dlp.srv.world. ; <<>> DiG 9.16.23-RH <<>> dlp.srv.world. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 22835 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1232 ; COOKIE: d58f0c16c9f22ca00100000061dcce5e3191581ecff49d44 (good) ;; QUESTION SECTION: ;dlp.srv.world. IN A ;; ANSWER SECTION: dlp.srv.world. 86400 IN A 10.0.0.30 ;; Query time: 1 msec ;; SERVER: 10.0.0.30#53(10.0.0.30) ;; WHEN: Tue Jan 11 09:25:02 JST 2022 ;; MSG SIZE rcvd: 86[root@dlp ~]# dig -x 10.0.0.30 ; <<>> DiG 9.16.23-RH <<>> -x 10.0.0.30 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39095 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1232 ; COOKIE: 10c59ae3bdb46f280100000061dcce83a05df24daf8b8401 (good) ;; QUESTION SECTION: ;30.0.0.10.in-addr.arpa. IN PTR ;; ANSWER SECTION: 30.0.0.10.in-addr.arpa. 86400 IN PTR dlp.srv.world. ;; Query time: 4 msec ;; SERVER: 10.0.0.30#53(10.0.0.30) ;; WHEN: Tue Jan 11 09:25:39 JST 2022 ;; MSG SIZE rcvd: 106 |
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