??????????????
????Nmap?????????????6??????
????open????????????
????closed???????????
????filtered???????????IDS/IPS???Σ?????????????
????unfiltered???????б????Σ?????????????????????
????open|filtered???????????????Ρ?
????closed|filtered ??????????????Ρ?
?????????跽?????
????-sS/sT/sA/sW/sM:?????? TCP SYN/Connect()/ACK/Window/Maimon scans?????????????????????衣
????-sU: ??????UDP??跽?????????????UDP????????
????-sN/sF/sX: ??????TCP Null?? FIN?? and Xmas scans??????跽???Э?????????TCP???????
????--scanflags <flags>: ????TCP????flags??
????-sI <zombiehost[:probeport]>: ??????idle scan???????????????????????????????zombie host??
????-sY/sZ: ???SCTP INIT/COOKIE-ECHO?????SCTPЭ??????????????
????-sO: ???IP protocol ??????????????Э???????
????-b <FTP relay host>: ???FTP bounce scan??跽?
??????????
????-p <port ranges>: ??????????
???????: -p22; -p1-65535; -p U:53??111??137??T:21-25??80??139??8080??S:9??????T????TCPЭ?顢U????UDPЭ?顢S????SCTPЭ?飩
????-F: Fast mode – ?????????????TOP 100????
????-r: ?????ж???????????????????ò?????nmap????????????????????裬????nmap????費??????????????????
????--top-ports <number>:??迪???????number??????nmap???????????????????????????裬???????????????????????????????????г??п??????????б?????????μ??????nmap-services?????????￡?nmap??????п????1000??TCP????
????--port-ratio <ratio>: ???????????????????????--top-ports???????????????????????????????--port-ratio????????衣???????????????0??1??????巶Χ????????????nmap-services?????
?????????汾???
?????????????
????-sV: ?????Nmap???а汾???
????--version-intensity <level>: ????汾???????0-9????????7????????????????????????????????????????
????--version-light: ?????????????? (intensity 2)
????--version-all: ??????????е?probes??????? (intensity 9)
????--version-trace: ??????????汾???????????
????????????????????
????-O: ???Nmap????OS???
????--osscan-limit: ????Nmap?????????????????OS?????????????????????????open??closed???????
????--osscan-guess: ???2????????????????????????????????????????????????????????????
?????塢?????/IDS???
???????????
????-f; --mtu <val>: ?????÷??????????????MTU.
????-D <decoy1??decoy2[??ME]??...>: ?????IP??????????????????ME?????????IP?????
????-S <IP_Address>: α???????IP???
????-e <iface>: ??????????????
????-g/--source-port <portnum>: ??????????
????--data-length <num>: ??????????????????????Num??
????--ip-options <options>: ????????IP????????????????
????--ttl <val>: ????time-to-live???
????--spoof-mac <mac address/prefix/vendor name>: α?MAC???
????--badsum: ???????checksum?????????????????????￡?????????????????????????????????????????????IDS/IPS????