CentOS6.3 x86_64 mininstall 安装扫描之王nmap
1,安装
[root@bogon ~]# yum -y install nmap
Loaded plugins: fastestmirror, presto
Loading mirror speeds from cached hostfile
* base: mirrors.163.com
* extras: mirrors.163.com
* updates: mirrors.163.com
base | 3.7 kB 00:00
extras | 3.5 kB 00:00
extras/primary_db | 8.9 kB 00:00
updates | 3.5 kB 00:00
updates/primary_db | 3.5 MB 00:16
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package nmap.x86_64 2:5.51-2.el6 will be installed
--> Processing Dependency: libpcap.so.1()(64bit) for package: 2:nmap-5.51-2.el6.x86_64
--> Running transaction check
---> Package libpcap.x86_64 14:1.0.0-6.20091201git117cb5.el6 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
===============================================================================================
Package Arch Version Repository Size
===============================================================================================
Installing:
nmap x86_64 2:5.51-2.el6 base 2.7 M
Installing for dependencies:
libpcap x86_64 14:1.0.0-6.20091201git117cb5.el6 base 126 k
Transaction Summary
===============================================================================================
Install 2 Package(s)
Total download size: 2.9 M
Installed size: 10 M
Downloading Packages:
Setting up and reading Presto delta metadata
Processing delta metadata
Package(s) data still to download: 2.9 M
(1/2): libpcap-1.0.0-6.20091201git117cb5.el6.x86_64.rpm | 126 kB 00:00
(2/2): nmap-5.51-2.el6.x86_64.rpm | 2.7 MB 00:06
-----------------------------------------------------------------------------------------------
Total 431 kB/s | 2.9 MB 00:06
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : 14:libpcap-1.0.0-6.20091201git117cb5.el6.x86_64 1/2
Installing : 2:nmap-5.51-2.el6.x86_64 2/2
Verifying : 2:nmap-5.51-2.el6.x86_64 1/2
Verifying : 14:libpcap-1.0.0-6.20091201git117cb5.el6.x86_64 2/2
Installed:
nmap.x86_64 2:5.51-2.el6
Dependency Installed:
libpcap.x86_64 14:1.0.0-6.20091201git117cb5.el6
Complete!
2，查看libpcap（依赖），nmap的简介
[root@bogon ~]# rpm -qi libpcap
Name : libpcap Relocations: (not relocatable)
Version : 1.0.0 Vendor: CentOS
Release : 6.20091201git117cb5.el6 Build Date: Fri 12 Nov 2010 03:46:56 AM CST
Install Date: Wed 24 Oct 2012 06:47:46 AM CST Build Host: c6b6.bsys.dev.centos.org
Group : Development/Libraries Source RPM: libpcap-1.0.0-6.20091201git117cb5.el6.src.rpm
Size : 332194 License: BSD with advertising
Signature : RSA/8, Sun 03 Jul 2011 12:37:49 PM CST, Key ID 0946fca2c105b9de
Packager : CentOS BuildSystem
URL : http://www.tcpdump.org
Summary : A system-independent interface for user-level packet capture
Description :
Libpcap provides a portable framework for low-level network
monitoring. Libpcap can provide network statistics collection,
security monitoring and network debugging. Since almost every system
vendor provides a different interface for packet capture, the libpcap
authors created this system-independent API to ease in porting and to
alleviate the need for several system-dependent packet capture modules
in each application.
[root@bogon ~]# rpm -qi nmap
Name : nmap Relocations: (not relocatable)
Version : 5.51 Vendor: CentOS
Release : 2.el6 Build Date: Fri 22 Jun 2012 08:46:25 PM CST
Install Date: Wed 24 Oct 2012 06:47:47 AM CST Build Host: c6b8.bsys.dev.centos.org
Group : Applications/System Source RPM: nmap-5.51-2.el6.src.rpm
Size : 10153050 License: GPLv2 and LGPLv2+ and GPLv2+ and BSD
Signature : RSA/SHA1, Mon 25 Jun 2012 06:20:19 AM CST, Key ID 0946fca2c105b9de
Packager : CentOS BuildSystem
URL : http://nmap.org/
Summary : Network exploration tool and security scanner
Description :
Nmap is a utility for network exploration or security auditing. It supports
ping scanning (determine which hosts are up), many port scanning techniques
(determine what services the hosts are offering), and TCP/IP fingerprinting
(remote host operating system identification). Nmap also offers flexible target
and port specification, decoy scanning, determination of TCP sequence
predictability characteristics, reverse-identd scanning, and more. In addition
to the classic command-line nmap executable, the Nmap suite includes a flexible
data transfer, redirection, and debugging tool (netcat utility ncat), a utility
for comparing scan results (ndiff), and a packet generation and response analysis
tool (nping).
3，测试
[root@bogon ~]# nmap www.baidu.com
Starting Nmap 5.51 ( http://nmap.org ) at 2012-10-24 06:58 CST
Nmap scan report for www.baidu.com (61.135.169.105)
Host is up (0.13s latency).
Other addresses for www.baidu.com (not scanned): 61.135.169.125
Not shown: 983 filtered ports
PORT STATE SERVICE
25/tcp open smtp
80/tcp open http
81/tcp open hosts2-ns
82/tcp open xfer
110/tcp open pop3
119/tcp open nntp
143/tcp open imap
465/tcp open smtps
563/tcp open snews
587/tcp open submission
993/tcp open imaps
995/tcp open pop3s
3128/tcp open squid-http
8008/tcp open http
8080/tcp open http-proxy
8081/tcp open blackice-icecap
8888/tcp open sun-answerbook
Nmap done: 1 IP address (1 host up) scanned in 219.51 seconds
[root@bogon ~]# nmap www.google.com
Starting Nmap 5.51 ( http://nmap.org ) at 2012-10-24 07:02 CST
Nmap scan report for www.google.com (61.49.43.2)
Host is up (0.023s latency).
Not shown: 984 filtered ports
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
80/tcp open http
82/tcp open xfer
110/tcp open pop3
119/tcp open nntp
143/tcp open imap
465/tcp open smtps
563/tcp open snews
587/tcp open submission
993/tcp open imaps
995/tcp open pop3s
3128/tcp open squid-http
8008/tcp open http
8080/tcp open http-proxy
8888/tcp open sun-answerbook
Nmap done: 1 IP address (1 host up) scanned in 61.40 seconds
4，验证下测试结果，估计google的ssh密码非常强
[root@localhost ~]# telnet www.google.com 22
Trying 61.49.43.2...
Connected to www.google.com (61.49.43.2).
Escape character is '^]'.
SSH-2.0-OpenSSH_5.3p1 Debian-3ubuntu7
Nmap tests the most common network communication ports for listening or waiting services. This knowledge can be helpful to an administrator who wants to close down unnecessary or unused services.
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