[Test Tool] network port scanning tool NMAP

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Today, I need to perform port scanning on a server on the network. I tried some of them and thought that NMAP is a good port scanning software. I 'd like to share it with you.

 

Software Archives

Name: NMAP

Version: v5.21

Home: http://nmap.org/

Size: Gui version: 14.8 MB

System: Windows 2000/XP/Vista/7/2008

Download: http://nmap.org/dist/nmap-5.21-setup.exe

Charged or not:Free

Green or not:Green Software

Open source or not: Open Source

Note:The GUI version in Windows is downloaded here. In fact, NMAP is a cross-platform port scanning tool, including Linux, windows, and Mac OS X.

 

Install

Download the package and install it. click Next.

Note: Follow Winpcap 4.1.1

Installation completed:

 

Fast

After installation, the icon is as follows:

 

After startup

 

It seems that NMAP is a command line tool. This is just the Nmap GUI.

 

Practice with Google

 

Take a look at the complete report:

Starting NMAP 5.21 (http://nmap.org) at 2010-06-23 23:46 China Standard Time: AUC: loaded 36 scripts for scanning. initiating Ping scan at 23: 46 scanning Google.com (66.249.89.99) [8 ports] completed Ping scan at 23:46, 0.55 s elapsed (1 Total hosts) Initiating parallel DNS resolution of 1 host. at 23: 46 completed parallel DNS resolution of 1 host. at 23:46, 11.02 s elapsedinitiating SYN stealth scan at 23: 46 Scanning Google.com (66.249.89.99) [1000 ports] discovered open port 443/TCP on 66.249.89.99discovered open port 80/TCP on 66.249.89.99completed SYN stealth scan at, 38.60 s elapsed (1000 ports total) initiating service scan at 23: 47 scanning 2 services on Google.com (66.249.89.99) completed service scan at 23:47, 23.71 s elapsed (2 services on 1 host) Initiating OS Detection (try #1) against Google.com (66. 249.89.99) retrying OS Detection (try #2) against Google.com (66.249.89.99) Initiating traceroute at 23: 47 completed traceroute at 23:48, 0.25 s elapsednse: script scanning failed: starting runlevel 1 (of 1) scan. initiating neuron at 23: 48 completed neuron at 23:48, 19.50 s elapsednse: script scanning completed. nmap scan report for Google.com (66.249.89.99) host is up (0.24 s latency ). hostname Google. Com resolves to 2 IPs. only scanned 66.249.89.99rdns record for 66.249.89.99: nrt04s01-in-f99.1e100.netNot shown: 997 filtered portsport State Service version80/tcp open HTTP Google httpd 2.0 (gfe) | HTML-title: 302 moved | _ requested resource was http://www.google.com.hk/url? Sa = P & cki = Pref % 3did % 3d4729719c31799784: FF % 3d2: LD % 3dzh-cn: NW % 3d1: TM % 3d1277308057: LM % 3d1277308057: S % 3dibvdtbokvkmtbvt-& Q = http://www.google.com.hk/&ust=1277308087644484&usg=AFQjCNH2UNPvO_c0LJuvHKBzrpBzkPTQrg113/tcp closed auth443/tcp Open SSL/HTTP Google httpd 2.0 (gfe) | robots.txt: Has 201 disallowed entries (15 shown) |/search/groups/images/catalogs/catalogues/news |/nwshp/setnewsprefs? /Index.html? /? /Addurl/image? /Pagead/| _/relpage // relcontent/imgres | _ http-favicon: Unknown favicon MD5: 09b565a51e14b721a323f0ba44b2982a | HTML-title: 302 moved | _ requested resource was http://www.google.com/ OS fingerprint not ideal because: didn't receive UDP response. please try again with-ssuno OS matches for hostnetwork distance: 1 hoptcp Sequence Prediction: Difficulty = 262 (Good luck !) Ip id sequence generation: randomizedservice info: OS: linuxtraceroute (using port 113/tcp) Hop RTT address1 242.00 MS nrt04s01-in-f99.1e100.net (66.249.89.99) read data files from: C: \ Program Files \ nmapos and service detection completed MED. please report any incorrect results at http://nmap.org/submit. NMAP done: 1 IP address (1 host up) scanned in 102.19 seconds raw packets sent: 2094 (95.652kb) | rcvd: 45 (2214b)

Wow, only port 80 and port 443 are open, and the HTTP server software is also available. The operating system is also Linux.

 

Well, this port interface is quite good:

 

There is also a network topology:

 

Because NMAP has complex parameters, its GUI tool zenmap provides multiple profiles for ease of use. See "quick scan"

 

 

This is just the initial use of NMAP. I will share it with you later.