服务器CentOS安装nmap端口查看工具（centos nmap）

在Linux系统中，nmap是一款非常实用的端口扫描工具，可以帮助我们检测目标主机的开放端口、运行服务等信息，本文将以CentOS为例，介绍如何在服务器上安装和配置nmap。

安装前的准备

1、确保系统已经更新到最新版本：

sudo yum update y

2、安装必要的依赖包：

sudo yum install y gcc gccc++ make zlibdevel openssldevel libpcapdevel libxml2devel ncursesdevel

下载并编译安装nmap

1、下载nmap源代码：

wget https://nmap.org/dist/nmap7.91.tar.bz2

2、解压源代码：

tar xvf nmap7.91.tar.bz2

3、进入解压后的目录：

cd nmap7.91

4、编译并安装nmap：

./configure && make && sudo make install

验证nmap安装成功

1、查看nmap版本：

nmap version

2、使用nmap进行简单的端口扫描：

sudo nmap sT O localhost

配置nmap服务（可选）

如果需要让nmap随系统启动，可以将其配置为服务，以下是配置nmap服务的步骤：

1、创建nmap服务文件：

sudo nano /etc/systemd/system/nmap.service

2、将以下内容粘贴到服务文件中：

[Unit]
Description=Nmap Network Scanning Tools
After=syslog.target network.target remotefs.target nsslookup.target timesync.target auditd.service wpa_supplicant.service avahidaemon.service networkmanager.service dnsresolver.service rsyslog.service crond.service systemdtimesyncd.service basic.target bluetooth.target cups.service lvm2monitor.service networking.service irqbalance.service smartmontools.service upower.service libvirtguests.service thermald.service systemdjournaldremote.socket systemdjournaldunix.socket systemdjournalddevlog.socket systemdjournaldinternal.logsocket systemdjournaldwaitforfiles.socket systemdjournaldforwarded.socket target cgroupsv1.service plymouthquitwait.service plymouthstart.service plymouthreadwrite.service plymouthprepare.service plymouthconfigtest.service plymouthstop.service plymouthdebuginformational.service plymouthfinishingbootupservices.service plymouthresumefromusbdeviceshookscripts.service plymouthrebootfromusbdeviceshookscripts.service plymouthsuspendtodiskhookscripts.service plymouthhibernatehookscripts.service plymouthshutdownhookscripts.service plymouthdefaultdisplayhookscripts.service plymouthinitrdactionscriptshookscripts.service plymouthmountallhookscripts.service plymouthudevtriggerhookscripts.service plymouthlatestartuphookscripts.service plymouthearlyprintkhookscriptshookscripts.service plymouthlocalcommandscripthookshookscripts.service plymouthblockerhookscriptshookscripts.service plymouthejectmediahookscriptshookscripts.service plymoutheventhandlerhookscriptshookscripts.service plymouthrtchookscriptshookscripts.service plymouthnetworkupdownhookscriptshookscripts.service plymouthnetworkmanagerupdownhookscriptshookscripts.service plymouthsystemreadytobootuphookscriptshookscripts.service plymouthsystemshutdownrequestedhookscriptshookscripts.service plymouthsystemrebootrequestedhookscriptshookscripts.service plymouthsystemsuspendrequestedhookscriptshookscripts.service plymouthsystemhibernaterequestedhookscriptshookscripts.service plymouthsystemresumerequestedhookscriptshookscripts.service plymouthsystemacpisleepstatehookscriptshookscripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook scripts hook script