????Nmap???????????????????????????????? Nmap??????????????????????????????????????????????????????????????????????winodws??linux??mac?????????Nmap?????????????ù???????????
????????????????????????????????
???????????????????????????????
?????????????????????????????汾
?????????????????????????????汾
??????????????????Nmap??????
????Nmap?????????????????????????н?????????????檔??????????·????????:
????????Nmap
????????е????????
?????????????
????Nmap??y??
????Nmap??ò??????????????裬??????TCP??connect??????裬TCP?????ident??裬FTP???????????????Щ???????????????????????????????????????Щ????
????Nmap??????????????????????????????????????????????????????????????????Щ??????????????????????????/????????????????????????????Щ?????????????????÷????????
??????赥???????????????????￡?
????#nmap nxadmin.com
????#nmap 192.168.1.2
?????????????????????????:
????#nmap 192.168.1.1/24
???????????????????￡?
????#nmap 192.168.1.2 192.168.1.5
????????????Χ?????????￡?
????#nmap 192.168.1.1-100(???IP????192.168.1.1-192.168.1.100???????????)
??????????????ip????б???????????????txt???????namp???????￡???????txt????????????????????￡?
????#nmap -iL target.txt
??????????????????????????????б????????????:
????#nmap -sL 192.168.1.1/24
??????????????ip?????????????????????
????#nmap 192.168.1.1/24 -exclude 192.168.1.1
??????????????????е?ip???????????????
????#nmap 192.168.1.1/24 -exclude file xxx.txt (xxx.txt?е??????????????????????)
?????????????????80??21??23????????????
????#nmap -p80??21??23 192.168.1.1

??????????????????????Nmap????????????????????????????Nmap????輼??.
????Tcp SYN Scan (sS)
???????????????????跽????????????????裬?????????????Nmap?????????????????????????????????????Nmap????SYN???????????????????????????κλ?.?????????????????????κ????????????????γ?????????SYN????????.
???????Nmap??????????????????????????Tcp SYN.?????????root/administrator???.
????#nmap -sS 192.168.1.1
????Tcp connect() scan(sT)
????????????SYN??裬TCP connect()??????????????.?????Tcp SYN??裬Tcp connect()????????????????????????????????connect().Tcp connect()??輼????????????TCP??UDP???.
????#nmap -sT 192.168.1.1
????Udp scan(sU)
??????????壬??????輼????????????????????UDP???.????????????κε?SYN???????????????????UDP?????UDP??跢??UDP?????????????????????????????????ICMP??????????????????????????????????????????????????????????.
????#nmap -sU 192.168.1.1