How to hide version information of bind DNS server?
Issue
- I would like to hide version information of bind for the query from the client like below.
# dig @localhost chaos txt version.bind
; <<>> DiG 9.11.26-RedHat-9.11.26-4.el8_4 <<>> @localhost chaos txt version.bind
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34275
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: f8be3d03e4146d5cbc00031d6396ddf6406b7ecdc44311f6 (good)
;; QUESTION SECTION:
;version.bind. CH TXT
;; ANSWER SECTION:
version.bind. 0 CH TXT "9.11.26-RedHat-9.11.26-4.el8_4" <<<===
;; AUTHORITY SECTION:
version.bind. 0 CH NS version.bind.
;; Query time: 6 msec
;; SERVER: ::1#53(::1)
;; WHEN: Mon Dec 12 02:53:26 EST 2022
;; MSG SIZE rcvd: 126
Environment
- Red Hat Enterprise Linux 8
- bind
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