Shulou(Shulou.com)06/01 Report--

CentOS6.3 x86x64 mininstall installation scan King nmap

1, install

[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

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Package Arch Version Repository Size

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Installing:

Nmap x86x 64 2purl 5.51-2.el6 base 2.7m

Installing for dependencies:

Libpcap x86'64 14 1.0.0-6.20091201git117cb5.el6 base 126k

Transaction Summary

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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: 2.9m

(1ap2): libpcap-1.0.0-6.20091201git117cb5.el6.x86_64.rpm | 126 kB 00:00

(2ap2): nmap-5.51-2.el6.x86_64.rpm | 2.7MB 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 Compact 2

Installing: 2:nmap-5.51-2.el6.x86_64 2 Compact 2

Verifying: 2:nmap-5.51-2.el6.x86_64 1 Compact 2

Verifying: 14:libpcap-1.0.0-6.20091201git117cb5.el6.x86_64 2 Compact 2

Installed:

Nmap.x86_64 2Rol 5.51-2.el6

Dependency Installed:

Libpcap.x86_64 14VR 1.0.0-6.20091201git117cb5.el6

Complete!

2. View the brief introduction of libpcap (dependency) and nmap

[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, test

[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. Verify the test results. It is estimated that the ssh password of google is very strong.

[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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