nmap是一款非常实用的扫描工具，适用于linux、windows、mac三大主流平台。
直接yum安装nmap
# yum install nmap
Loaded plugins: fastestmirror
Determining fastest mirrors
* base: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.tuna.tsinghua.edu.cn
* updates: mirrors.tuna.tsinghua.edu.cn
base | 3.6 kB 00:00:00
docker-ce-stable | 3.5 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/2): extras/7/x86_64/primary_db | 156 kB 00:00:00
(2/2): updates/7/x86_64/primary_db | 1.4 MB 00:00:01
Resolving Dependencies
--> Running transaction check
---> Package nmap.x86_64 2:6.40-16.el7 will be installed
--> Processing Dependency: nmap-ncat = 2:6.40-16.el7 for package: 2:nmap-6.40-16.el7.x86_64
--> Processing Dependency: libpcap.so.1()(64bit) for package: 2:nmap-6.40-16.el7.x86_64
--> Running transaction check
---> Package libpcap.x86_64 14:1.5.3-11.el7 will be installed
---> Package nmap-ncat.x86_64 2:6.40-16.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=============================================================================================================================================================================================================================================
Package Arch Version Repository Size
=============================================================================================================================================================================================================================================
Installing:
nmap x86_64 2:6.40-16.el7 base 3.9 M
Installing for dependencies:
libpcap x86_64 14:1.5.3-11.el7 base 138 k
nmap-ncat x86_64 2:6.40-16.el7 base 206 k
Transaction Summary
=============================================================================================================================================================================================================================================
Install 1 Package (+2 Dependent packages)
Total download size: 4.3 M
Installed size: 17 M
Is this ok [y/d/N]: y
Downloading packages:
(1/3): libpcap-1.5.3-11.el7.x86_64.rpm | 138 kB 00:00:00
(2/3): nmap-ncat-6.40-16.el7.x86_64.rpm | 206 kB 00:00:00
(3/3): nmap-6.40-16.el7.x86_64.rpm | 3.9 MB 00:00:02
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 2.1 MB/s | 4.3 MB 00:00:02
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : 14:libpcap-1.5.3-11.el7.x86_64 1/3
Installing : 2:nmap-ncat-6.40-16.el7.x86_64 2/3
Installing : 2:nmap-6.40-16.el7.x86_64 3/3
Verifying : 14:libpcap-1.5.3-11.el7.x86_64 1/3
Verifying : 2:nmap-ncat-6.40-16.el7.x86_64 2/3
Verifying : 2:nmap-6.40-16.el7.x86_64 3/3
Installed:
nmap.x86_64 2:6.40-16.el7
Dependency Installed:
libpcap.x86_64 14:1.5.3-11.el7 nmap-ncat.x86_64 2:6.40-16.el7
Complete!
发现并不是最新版本
# yum info nmap
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.tuna.tsinghua.edu.cn
* updates: mirrors.tuna.tsinghua.edu.cn
Installed Packages
Name : nmap
Arch : x86_64
Epoch : 2
Version : 6.40
Release : 16.el7
Size : 16 M
Repo : installed
From repo : base
Summary : Network exploration tool and security scanner
URL : http://nmap.org/
License : GPLv2 and LGPLv2+ and GPLv2+ and BSD
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).
升级一下看看，发现也不能直接升级
# yum update nmap
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.tuna.tsinghua.edu.cn
* updates: mirrors.tuna.tsinghua.edu.cn
No packages marked for update
直接yum卸载掉
# yum remove nmap
Loaded plugins: fastestmirror
Resolving Dependencies
--> Running transaction check
---> Package nmap.x86_64 2:6.40-16.el7 will be erased
--> Finished Dependency Resolution
Dependencies Resolved
=============================================================================================================================================================================================================================================
Package Arch Version Repository Size
=============================================================================================================================================================================================================================================
Removing:
nmap x86_64 2:6.40-16.el7 @base 16 M
Transaction Summary
=============================================================================================================================================================================================================================================
Remove 1 Package
Installed size: 16 M
Is this ok [y/N]: y
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Erasing : 2:nmap-6.40-16.el7.x86_64 1/1
Verifying : 2:nmap-6.40-16.el7.x86_64 1/1
Removed:
nmap.x86_64 2:6.40-16.el7
Complete!
按官方文档只鹅接rpm安装最新版本的nmap
# rpm -vhU https://nmap.org/dist/nmap-7.70-1.x86_64.rpm
Retrieving https://nmap.org/dist/nmap-7.70-1.x86_64.rpm
Preparing... ################################# [100%]
Updating / installing...
1:nmap-2:7.70-1 ################################# [100%]
安装成功
#nmap --version
Nmap version 7.70 ( https://nmap.org )
Platform: x86_64-redhat-linux-gnu
Compiled with: liblua-5.3.3 openssl-1.0.2n nmap-libssh2-1.8.0 nmap-libz-1.2.8 nmap-libpcre-7.6 nmap-libpcap-1.7.3 nmap-libdnet-1.12 ipv6
Compiled without:
Available nsock engines: epoll poll select
查看一下本机开放的端口情况
# nmap localhost
Starting Nmap 7.70 ( https://nmap.org ) at 2019-01-30 04:21 EST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000026s latency).
Other addresses for localhost (not scanned): ::1
Not shown: 998 closed ports
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
Nmap done: 1 IP address (1 host up) scanned in 0.15 seconds
NMAP功能强大，各位好好用吧！