Zenmap(nmap for window, 포트 스캐닝, nmap 옵션)

유명한 nmap 도구 입니다.

 

리눅스/유닉스에서 손쉽게 설치하여 사용할 수 있는도구 인데요.

 

윈도우 버전역시 손쉽게 사용 가능합니다.

 

해당 툴은 포트 스캐닝을 할 수 있는 툴로서

 

특정 IP에 대해 어떤 서비스 포트들이 오픈되어 있는지 점검할 수 있는 툴입니다.

 

취약점 점검에도 많이 쓰이지요. 

 

다만 포트 스캐닝을 위해 모든 포트를 접속시도 하다보니 외부 보안 시스템에서 걸리거나

운영자가 포트 스캐닝을 당했음을 로그로 알 수 있으니 주의하셔야 합니다.

 

자~ 다운로드 경로는 다음과 같습니다.

https://nmap.org/download.html

Download the Free Nmap Security Scanner for Linux/Mac/Windows

프리웨어라 손쉽게 사용할 수 있습니다.

 

설치도 어렵지 않구요~ 다만 커맨드를 어떻게 할지 고민이 실듯 합니다.

 

 

저는 보통 다음과 같이 합니다.

nmap -sS -p 1-65535 -T4 -v 아이피

 

옵션을 살펴보면,

 

-sS 는 TCP SYN 만 보낸단 의미로 스캔하는 서버에 로그를 남기지 않거나 탐지되지 않도록 합니다.

-p 1-65535 는 모든 포트를 스캐닝 한다는 뜻이구요.

-T4 는 속도입니다 0~5 까지 숫자가 높을수록 속도가 빠릅니다.

-v 아이피 

 

그외 모든 옵션은 다음과 같습니다. 자신이 원하는 옵션을 넣고 스캔버튼만 누르면 다음과 위 사진과 같이 오픈된 포트를 확인 할수 있습니다.

 

가끔 쓰려면 까먹어서.. 홈페이지에 있는 내용 붙여넣기~

 

 

Nmap 7.80 ( https://nmap.org )

Usage: nmap [Scan Type(s)] [Options] {target specification}

 

TARGET SPECIFICATION:

  Can pass hostnames, IP addresses, networks, etc.

  Ex: scanme.nmap.org, microsoft.com/24, 192.168.0.1; 10.0.0-255.1-254

  -iL <inputfilename>: Input from list of hosts/networks

  -iR <num hosts>: Choose random targets

  --exclude <host1[,host2][,host3],...>: Exclude hosts/networks

  --excludefile <exclude_file>: Exclude list from file

 

HOST DISCOVERY:

  -sL: List Scan - simply list targets to scan

  -sn: Ping Scan - disable port scan

  -Pn: Treat all hosts as online -- skip host discovery

  -PS/PA/PU/PY[portlist]: TCP SYN/ACK, UDP or SCTP discovery to given ports

  -PE/PP/PM: ICMP echo, timestamp, and netmask request discovery probes

  -PO[protocol list]: IP Protocol Ping

  -n/-R: Never do DNS resolution/Always resolve [default: sometimes]

  --dns-servers <serv1[,serv2],...>: Specify custom DNS servers

  --system-dns: Use OS's DNS resolver

  --traceroute: Trace hop path to each host

 

SCAN TECHNIQUES:

  -sS/sT/sA/sW/sM: TCP SYN/Connect()/ACK/Window/Maimon scans

  -sU: UDP Scan

  -sN/sF/sX: TCP Null, FIN, and Xmas scans

  --scanflags <flags>: Customize TCP scan flags

  -sI <zombie host[:probeport]>: Idle scan

  -sY/sZ: SCTP INIT/COOKIE-ECHO scans

  -sO: IP protocol scan

  -b <FTP relay host>: FTP bounce scan

 

PORT SPECIFICATION AND SCAN ORDER:

  -p <prot ranges>: Only scan specified ports

   Ex: -p22; -p1-65535; -p U:53,111,137,T:21-25,80,139,8080,S:9

  --exclude-ports <prot ranges>: Exclude the specified ports from scanning

  -F: Fast mode - Scan fewer ports than the default scan

  -r: Scan ports consecutively - don't randomize

  --top-ports <number>: Scan <number>most common ports

  --port-ratio <ratio>: Scan ports more common than <ratio>

 

SERVICE/VERSION DETECTION:

  -sV: Probe open ports to determine service/version info

  --version-intensity <level>: Set from 0 (light) to 9 (try all probes)

  --version-light: Limit to most likely probes (intensity 2)

  --version-all: Try every single probe (intensity 9)

  --version-trace: Show detailed version scan activity (for debugging)

 

SCRIPT SCAN:

  -sC: equivalent to --script=default

  --script=<Lua scripts>: <Lua scripts> is a comma separated list of directories, script-files or script-categories

  --script-args=<n1=v1,[n2=v2,...]>: provide arguments to scripts

  --script-args-file=filename: provide NSE script args in a file

  --script-trace: Show all data sent and received

  --script-updatedb: Update the script database.

  --script-help=<Lua scripts>: Show help about scripts. <Lua scripts> is a comma-separated list of script-files or script-categories. OS DETECTION:

  -O: Enable OS detection

  --osscan-limit: Limit OS detection to promising targets

  --osscan-guess: Guess OS more aggressively

 

TIMING AND PERFORMANCE:

  Options which take <time> are in seconds, or append 'ms' (milliseconds), 's' (seconds), 'm' (minutes), or 'h' (hours) to the value (e.g. 30m).

  -T<0-5>: Set timing template (higher is faster)

  --min-hostgroup/max-hostgroup <size>: Parallel host scan group sizes

  --min-parallelism/max-parallelism <numprobes>: Probe parallelization

  --min-rtt-timeout/max-rtt-timeout/initial-rtt-timeout <time>

: Specifies probe round trip time.   --max-retries <tries>: Caps number of port scan probe retransmissions.   --host-timeout <time>: Give up on target after this long   --scan-delay/--max-scan-delay <time>: Adjust delay between probes   --min-rate <number>: Send packets no slower than per second   --max-rate <number>: Send packets no faster than per second

 

FIREWALL/IDS EVASION AND SPOOFING:   -f; --mtu <val>: fragment packets (optionally w/given MTU)   -D <decoy1,decoy2[,me],...>: Cloak a scan with decoys   -S <IP_Address>: Spoof source address   -e <iface>: Use specified interface   -g/--source-port <portnum>: Use given port number   --proxies <url1,[url2],...>: Relay connections through HTTP/SOCKS4 proxies   --data : <hex string>: Append a custom payload to sent packets   --data-string <string>: Append a custom ASCII string to sent packets   --data-length <num>: Append random data to sent packets   --ip-options <options>: Send packets with specified ip options   --ttl <val>: Set IP time-to-live field   --spoof-mac <mac address/prefix/vendor name>: Spoof your MAC address   --badsum: Send packets with a bogus TCP/UDP/SCTP checksum OUTPUT:   -oN/-oX/-oS/-oG <file>: Output scan in normal, XML, s|<rIpt Kiddi3, and Grepable format, respectively, to the given filename.  -oA <basename>: Output in the three major formats at once   -v: Increase verbosity level (use -vv or more for greater effect)   -d: Increase debugging level (use -dd or more for greater effect)   --reason: Display the reason a port is in a particular state   --open: Only show open (or possibly open) ports   --packet-trace: Show all packets sent and received   --iflist: Print host interfaces and routes (for debugging)   --append-output: Append to rather than clobber specified output files   --resume <filename>: Resume an aborted scan   --stylesheet <path/URL>: XSL stylesheet to transform XML output to HTML   --webxml: Reference stylesheet from Nmap.Org for more portable XML   --no-stylesheet: Prevent associating of XSL stylesheet w/XML output

 

MISC:   -6: Enable IPv6 scanning   -A: Enable OS detection, version detection, script scanning, and traceroute   --datadir <dirname>: Specify custom Nmap data file location   --send-eth/--send-ip: Send using raw ethernet frames or IP packets   --privileged: Assume that the user is fully privileged   --unprivileged: Assume the user lacks raw socket privileges   -V: Print version number   -h: Print this help summary page.

 

EXAMPLES:   nmap -v -A scanme.nmap.org   nmap -v -sn 192.168.0.0/16 10.0.0.0/8   nmap -v -iR 10000 -Pn -p 80 SEE THE MAN PAGE (https://nmap.org/book/man.html) FOR MORE OPTIONS AND EXAMPLES