dnc tcp查询

https://www.jianshu.com/p/4c2f1ea07866

dig +tcp www.baidu.com  www.souhu.com @8.8.8.8

dig 安装 yum install bind-utils

[popexizhi： dig很好用啊:) ]

# dig +x www.baidu.com  www.souhu.com @192.168.100.121

Invalid option: +x

Usage:  dig [@global-server] [domain] [q-type] [q-class] {q-opt}

            {global-d-opt} host [@local-server] {local-d-opt}

            [ host [@local-server] {local-d-opt} [...]]

Use "dig -h" (or "dig -h | more") for complete list of options

[root@lijie-120 ~]# dig www.baidu.com  www.souhu.com @192.168.100.121

; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7_5.1 <<>> www.baidu.com www.souhu.com @192.168.100.121

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- 54268="" div="" id:="" noerror="" opcode:="" query="" status:="">

;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 13, ADDITIONAL: 14

;; OPT PSEUDOSECTION:

; EDNS: version: 0, flags:; udp: 4096

;; QUESTION SECTION:

;www.baidu.com. IN A

;; ANSWER SECTION:

www.baidu.com. 286 IN CNAME www.a.shifen.com.

www.a.shifen.com. 32 IN A 61.135.169.125

www.a.shifen.com. 32 IN A 61.135.169.121

;; AUTHORITY SECTION:

com. 145709 IN NS k.gtld-servers.net.

com. 145709 IN NS j.gtld-servers.net.

com. 145709 IN NS f.gtld-servers.net.

com. 145709 IN NS c.gtld-servers.net.

com. 145709 IN NS b.gtld-servers.net.

com. 145709 IN NS h.gtld-servers.net.

com. 145709 IN NS a.gtld-servers.net.

com. 145709 IN NS l.gtld-servers.net.

com. 145709 IN NS m.gtld-servers.net.

com. 145709 IN NS g.gtld-servers.net.

com. 145709 IN NS d.gtld-servers.net.

com. 145709 IN NS i.gtld-servers.net.

com. 145709 IN NS e.gtld-servers.net.

;; ADDITIONAL SECTION:

a.gtld-servers.net. 181 IN A 192.5.6.30

b.gtld-servers.net. 181 IN A 192.33.14.30

c.gtld-servers.net. 181 IN A 192.26.92.30

d.gtld-servers.net. 181 IN A 192.31.80.30

e.gtld-servers.net. 181 IN A 192.12.94.30

f.gtld-servers.net. 181 IN A 192.35.51.30

g.gtld-servers.net. 181 IN A 192.42.93.30

h.gtld-servers.net. 181 IN A 192.54.112.30

i.gtld-servers.net. 181 IN A 192.43.172.30

j.gtld-servers.net. 181 IN A 192.48.79.30

k.gtld-servers.net. 181 IN A 192.52.178.30

l.gtld-servers.net. 181 IN A 192.41.162.30

m.gtld-servers.net. 181 IN A 192.55.83.30

;; Query time: 12 msec

;; SERVER: 192.168.100.252#53(192.168.100.252)

;; WHEN: 一 9月 03 19:59:26 CST 2018

;; MSG SIZE  rcvd: 533

;; Got answer:

;; ->>HEADER<<- 27059="" div="" id:="" noerror="" opcode:="" query="" status:="">

;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 3

;; OPT PSEUDOSECTION:

; EDNS: version: 0, flags:; udp: 4096

;; QUESTION SECTION:

;www.souhu.com. IN A

;; ANSWER SECTION:

www.souhu.com. 3517 IN CNAME cndm.com.

cndm.com. 3517 IN A 103.232.215.131

;; AUTHORITY SECTION:

cndm.com. 172717 IN NS ns1.dnbiz.com.

cndm.com. 172717 IN NS ns2.dnbiz.com.

;; ADDITIONAL SECTION:

ns1.dnbiz.com. 172717 IN A 112.17.38.146

ns2.dnbiz.com. 172717 IN A 112.17.38.148

;; Query time: 0 msec

;; SERVER: 192.168.100.121#53(192.168.100.121)

;; WHEN: 一 9月 03 19:59:26 CST 2018

;; MSG SIZE  rcvd: 151