Mục Lục
[1] Start and Enable BIND.
[root@soncq ~]# systemctl enable --now named[2] If Firewalld is running, allow DNS service. DNS uses [53/TCP,UDP].
[root@soncq ~]# firewall-cmd --add-service=dns --permanent
success
[root@soncq ~]# firewall-cmd --reload
success[3] Change DNS setting to refer to own DNS if need.
(replace [eth0] to your own environment).
[root@soncq ~]# nmcli connection modify eth0 ipv4.dns 10.0.0.30
[root@soncq ~]# nmcli connection down eth0; nmcli connection up eth0[4] Verify Name and Address Resolution. If [ANSWER SECTION] is shown, that’s OK.
[root@socnq ~]# dig soncq.local.
; <<>> DiG 9.11.26-RedHat-9.11.26-3.el8 <<>> soncq.local.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3163
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: b70c1b6e341746c86e2774056035b727aadd8ca9e912fddb (good)
;; QUESTION SECTION:
;soncq.local. IN A
;; ANSWER SECTION:
soncq.local. 86400 IN A 10.0.0.30
;; AUTHORITY SECTION:
local. 86400 IN NS soncq.local.
;; Query time: 0 msec
;; SERVER: 10.0.0.30#53(10.0.0.30)
;; WHEN: Thu July 14 14:18:07 ICT 2022
;; MSG SIZE rcvd: 100
[root@soncq ~]# dig -x 10.0.0.30
; <<>> DiG 9.11.26-RedHat-9.11.26-3.el8 <<>> -x 10.0.0.30
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12042
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: e6b32b71d24b4df1ea56aab36035b75f1e3fb6f5d409f7a4 (good)
;; QUESTION SECTION:
;30.0.0.10.in-addr.arpa. IN PTR
;; ANSWER SECTION:
30.0.0.10.in-addr.arpa. 86400 IN PTR soncq.local.
;; AUTHORITY SECTION:
0.0.10.in-addr.arpa. 86400 IN NS soncq.local.
;; ADDITIONAL SECTION:
soncq.local. 86400 IN A 10.0.0.30
;; Query time: 0 msec
;; SERVER: 10.0.0.30#53(10.0.0.30)
;; WHEN: Thu July 14 14:20:07 ICT 2022
;; MSG SIZE rcvd: 136