NMAP(1) Nmap NMAP(1) nmap - / nmap [...] [] {} Nmap (Network Mapper)Nmap(raw)IP()OS(OS)/Nmap()()Nmap Nmapinteresting ports table()openfilteredclosedunfilteredopen()/ Filtered()NmapClosed()NmapNmap unfilteredopen|filteredclosed|filtered2NmapIP(-sO)IP NmapDNSOSMAC Nmap 1NmapNmapOS-A-T4 1 Nmap # nmap -A -T4 scanme.nmap.org Nmap scan report for scanme.nmap.org (74.207.244.221) Host is up (0.029s latency). rDNS record for 74.207.244.221: li86-221.members.linode.com Not shown: 995 closed ports PORT STATE SERVICE VERSION 22/tcp open ssh OpenSSH 5.3p1 Debian 3ubuntu7 (protocol 2.0) | ssh-hostkey: 1024 8d:60:f1:7c:ca:b7:3d:0a:d6:67:54:9d:69:d9:b9:dd (DSA) |_2048 79:f8:09:ac:d4:e2:32:42:10:49:d3:bd:20:82:85:ec (RSA) 80/tcp open http Apache httpd 2.2.14 ((Ubuntu)) |_http-title: Go ahead and ScanMe! 646/tcp filtered ldp 1720/tcp filtered H.323/Q.931 9929/tcp open nping-echo Nping echo Device type: general purpose Running: Linux 2.6.X OS CPE: cpe:/o:linux:linux_kernel:2.6.39 OS details: Linux 2.6.39 Network Distance: 11 hops Service Info: OS: Linux; CPE: cpe:/o:linux:kernel TRACEROUTE (using port 53/tcp) HOP RTT ADDRESS [Cut first 10 hops for brevity] 11 17.65 ms li86-221.members.linode.com (74.207.244.221) Nmap done: 1 IP address (1 host up) scanned in 14.40 seconds Nmaphttps://nmap.orghttps://nmap.org/book/man.html Nmaphttps://nmap.org/data/nmap.usage.txt Nmap 7.94 ( 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 : Input from list of hosts/networks -iR : Choose random targets --exclude : Exclude hosts/networks --excludefile : 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 : 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 : Customize TCP scan flags -sI : Idle scan -sY/sZ: SCTP INIT/COOKIE-ECHO scans -sO: IP protocol scan -b : FTP bounce scan PORT SPECIFICATION AND SCAN ORDER: -p : Only scan specified ports Ex: -p22; -p1-65535; -p U:53,111,137,T:21-25,80,139,8080,S:9 --exclude-ports : Exclude the specified ports from scanning -F: Fast mode - Scan fewer ports than the default scan -r: Scan ports sequentially - don't randomize --top-ports : Scan most common ports --port-ratio : Scan ports more common than SERVICE/VERSION DETECTION: -sV: Probe open ports to determine service/version info --version-intensity : 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=: is a comma separated list of directories, script-files or script-categories --script-args=: 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=: Show help about 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