1、查本机netstat -nat|grep :80|awk '{print awk $NF}'|sort|uniq -c|sort -n
1 CLOSE_WAIT
1 established)
1 LAST_ACK
1 State
1 SYN_RECV
3 LISTEN
5 FIN_WAIT1
14 FIN_WAIT2
354 ESTABLISHED
1714 TIME_WAIT
2、查某网段
nmap -sS 172.16.1.0/24 -p 80|grep http|awk '{print awk $NF}'|sort|uniq -c|sort -n
1 Nmap
19 open
47 closed