DNS

DNSの情報収集

dig

バージョン情報

$ dig version.bind CHAOS TXT @10.10.10.48     

; <<>> DiG 9.18.1-1-Debian <<>> version.bind CHAOS TXT @10.10.10.48
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35047
;; flags: qr aa rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;version.bind.                  CH      TXT

;; ANSWER SECTION:
version.bind.           300     CH      TXT     "dnsmasq-2.76"

;; Query time: 92 msec
;; SERVER: 10.10.10.48#53(10.10.10.48) (UDP)
;; WHEN: Wed Sep 07 00:48:38 JST 2022
;; MSG SIZE  rcvd: 66

逆引き

$ dig -x 10.10.10.48 @10.10.10.48 

ANY

$ dig ANY @10.10.10.29 bank.htb

; <<>> DiG 9.18.1-1-Debian <<>> ANY @10.10.10.29 bank.htb
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 22166
;; flags: qr aa rd; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 2
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;bank.htb.                      IN      ANY

;; ANSWER SECTION:
bank.htb.               604800  IN      SOA     bank.htb. chris.bank.htb. 5 604800 86400 2419200 604800
bank.htb.               604800  IN      NS      ns.bank.htb.
bank.htb.               604800  IN      A       10.10.10.29

;; ADDITIONAL SECTION:
ns.bank.htb.            604800  IN      A       10.10.10.29

;; Query time: 92 msec
;; SERVER: 10.10.10.29#53(10.10.10.29) (TCP)
;; WHEN: Wed Sep 07 13:43:15 JST 2022
;; MSG SIZE  rcvd: 128