1. 如果没有安装nmap，就安装 yum install -y nmap 2. 扫描指定网段的远程桌面连接端口 nmap -sT -p3389 218.206.112.0/24 3. 如果觉得输出太多，可以用 grep 命令过滤 nmap -sT -p3389 218.206.112.0/24 | grep -B2 open 下面是操作的消息记录，备查。 [root@node18 opt]# nmap -bash: nmap: command not found [root@node18 opt]# yum install -y nmap Loaded plugins: fastestmirror Determining fastest mirrors * base: mirrors.163.com * extras: ftp.iij.ad.jp * updates: rsync.atworks.co.jp base | 1.1 kB 00:00 extras | 1.9 kB 00:00 extras/primary_db | 172 kB 00:00 updates | 1.9 kB 00:00 updates/primary_db | 828 kB 00:03 Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package nmap.i386 2:4.11-2 set to be updated --> Finished Dependency Resolution Dependencies Resolved ======================================================================================================================================================================== Package Arch Version Repository Size ======================================================================================================================================================================== Installing: nmap i386 2:4.11-2 base 660 k Transaction Summary ======================================================================================================================================================================== Install 1 Package(s) Upgrade 0 Package(s) Total download size: 660 k Downloading Packages: nmap-4.11-2.i386.rpm | 660 kB 00:00 Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing : nmap 1/1 Installed: nmap.i386 2:4.11-2 Complete! [root@node18 opt]# nmap Nmap 4.11 ( http://www.insecure.org/nmap/ ) 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 -sP: Ping Scan - go no further than determining if host is online -P0: Treat all hosts as online -- skip host discovery -PS/PA/PU [portlist]: TCP SYN/ACK or UDP discovery to given ports -PE/PP/PM: ICMP echo, timestamp, and netmask request discovery probes -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 SCAN TECHNIQUES: -sS/sT/sA/sW/sM: TCP SYN/Connect()/ACK/Window/Maimon scans -sN/sF/sX: TCP Null, FIN, and Xmas scans --scanflags <flags>: Customize TCP scan flags -sI <zombie host[:probeport]>: Idlescan -sO: IP protocol scan -b <ftp relay host>: FTP bounce scan PORT SPECIFICATION AND SCAN ORDER: -p <port ranges>: Only scan specified ports Ex: -p22; -p1-65535; -p U:53,111,137,T:21-25,80,139,8080 -F: Fast - Scan only the ports listed in the nmap-services file) -r: Scan ports consecutively - don't randomize 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) 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 milliseconds, unless you append '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 <time>: 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 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 --data-length <num>: Append random data to sent packets --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 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 twice for more effect) -d[level]: Set or increase debugging level (Up to 9 is meaningful) --packet-trace: Show all packets sent and received --iflist: Print host interfaces and routes (for debugging) --log-errors: Log errors/warnings to the normal-format output file --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 Insecure.Org for more portable XML --no-stylesheet: Prevent associating of XSL stylesheet w/XML output MISC: -6: Enable IPv6 scanning -A: Enables OS detection and Version detection --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 -V: Print version number -h: Print this help summary page. EXAMPLES: nmap -v -A scanme.nmap.org nmap -v -sP 192.168.0.0/16 10.0.0.0/8 nmap -v -iR 10000 -P0 -p 80 SEE THE MAN PAGE FOR MANY MORE OPTIONS, DESCRIPTIONS, AND EXAMPLES [root@node18 opt]# [root@node18 opt]# nmap -sT -p3389 218.206.112.0/24 Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2012-10-26 15:36 CST Interesting ports on 218.206.112.1: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.11: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.16: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.39: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.40: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.41: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.49: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.51: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.56: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.59: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.65: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.68: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.69: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.71: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.72: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.74: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.77: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.78: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.80: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.81: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.82: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.83: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.87: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.88: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.94: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.95: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.96: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.100: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.102: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.103: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.105: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.107: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.108: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.109: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.110: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.111: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.116: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.117: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.119: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.121: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.123: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.129: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.131: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.132: PORT STATE SERVICE 3389/tcp open ms-term-serv Interesting ports on 218.206.112.134: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.136: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.144: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.147: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.150: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.156: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.157: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.160: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.163: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.165: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.179: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.181: PORT STATE SERVICE 3389/tcp closed ms-term-serv Interesting ports on 218.206.112.188: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Interesting ports on 218.206.112.190: PORT STATE SERVICE 3389/tcp filtered ms-term-serv Nmap finished: 256 IP addresses (58 hosts up) scanned in 22.497 seconds [root@node18 opt]# [root@node18 opt]# [root@node18 opt]# [root@node18 opt]# nmap -sT -p3389 218.206.112.0/24 | grep -B2 open Interesting ports on 218.206.112.100: PORT STATE SERVICE 3389/tcp open ms-term-serv -- Interesting ports on 218.206.112.132: PORT STATE SERVICE 3389/tcp open ms-term-serv 转载请保留固定链接： https://linuxeye.com/Linux/893.html |