DNS forward query:

DNS Is the query ：

ping www.baidu.com

nslookup www.baidu.com

dig www.baidu.com

dig @114.114.114.114 www.baidu.com any

Reverse query ：dig -x 114.114.114.114

Query website domain name registration and backup information ：

Wanwang --- Alibaba cloud

└─# whois bobo.cn                                                1 ⨯
Domain Name: bobo.cn
ROID: 20030312s10001s00067285-cn
Domain Status: clientTransferProhibited
Registrant: Chang Yaming
Registrant Contact Email: [email protected]
Sponsoring Registrar: Xiamen Yiming Technology Co., Ltd
Name Server: ns4.dns.com
Name Server: ns3.dns.com
Registration Time: 2003-03-17 12:20:05
Expiration Time: 2031-03-17 12:48:36
DNSSEC: unsigned
 

FOFA Search for

Trace route

traceroute bobo.cn
result

traceroute to bobo.cn (127.0.1.1), 30 hops max, 60 byte packets
 1  bobo.cn (127.0.1.1)  0.018 ms  0.003 ms  0.002 ms

Active detection

netdiscover -i eth0 -r 192.168.145.1/24 

Sniffing does not send data

netdiscover -p 

View network segment host , write file

fping -g 192.168.145.1/24 -c 3 >fping.txt

namp scanning

nmap -sn 192.168.145.1/24

nc scanning , Port detection

nc -nv -w 1 -z 192.168.145.1 1-100

Half connected scan ： Will not be detected ,-sS Represents half connection scanning

nmap -sS 192.168.145 -p 80,81,82,22,23,24,86,443