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nmap用于网络探测和安全审核是网络探索工具和端口扫描程序

发布时间:2023-07-05 10:33:26 所属栏目:Linux 来源:互联网
导读:   Linux常用命令nmap(Network Mapper – 网络映射器)命令用于网络探测和安全审核,是网络探索工具和端口扫描程序。namp 它可以扫描单主机,也可以快速扫描大型网络结构,下面为大
  Linux常用命令nmap(Network Mapper – 网络映射器)命令用于网络探测和安全审核,是网络探索工具和端口扫描程序。namp 它可以扫描单主机,也可以快速扫描大型网络结构,下面为大家分享一下Linux常用命令nmap命令具体使用方法。
 
  语法格式
 
   nmap [Scan Type...] [Options] {target specification}
 
  选项说明
 
   -O   #激活探测操作
 
   -P0  #只进行扫描,不ping主机
 
   -PT  #是同TCP的ping
 
   -sV  #显示服务版本信息
 
   -sP  #ping扫描,仅发现目标主机是否存活
 
   -ps  #发送同步(SYN)报文
 
   -PU  #发送udp ping
 
   -PE  #强制执行直接的ICMPping
 
   -PB  #默认模式
 
   -6   #使用IPv6地址
 
   -v   #详细信息
 
   -d   #增加调试信息地输出
 
   -A   #使用所有高级扫描选项
 
   --resume  #恢复(继续上次)中止的扫描
 
   -P  #指定要扫描的端口,可以是一个端口,用逗号隔开多个端口,使用“-”表示端口范围
 
   -e  #在多网络接口Linux系统中,指定扫描使用的网络接口
 
   -g  #将指定的端口作为源端口进行扫描
 
   --ttl   #指定发送的扫描报文的生存期
 
   --packet-trace  #显示扫描过程中收发报文统计
 
   --scanflags     #设置在扫描报文中的TCP标志
 
   --send-eth/--send-ip  #使用原始以太网发送/构造指定IP发送
 
  应用举例
 
  典型的扫描
 
   [root@CentOS7-1 ~]# nmap -A  www.baidu.com
 
   Starting Nmap 6.40 ( http://nmap.org ) at 2021-03-13 04:30 EST
 
   Nmap scan report for www.baidu.com (36.152.44.95)
 
   Host is up (0.012s latency).
 
   Other addresses for www.baidu.com (not scanned): 36.152.44.96
 
   Not shown: 998 filtered ports
 
   PORT    STATE SERVICE        VERSION
 
   80/tcp  open  http-proxy     sslstrip
 
   |_http-methods: No Allow or Public header in OPTIONS response (status code 302)
 
   | http-robots.txt: 10 disallowed entries
 
   | /baidu /s? /ulink? /link? /home/news/data/ /bh /shifen/
 
   |_/homepage/ /cpro /
 
   |_http-title: xE7x99xBExE5xBAxA6xE4xB8x80xE4xB8x8BxEFxBCx8CxE4xBDxA0xE5xB0xB1xE7x9FxA5xE9x81x93
 
   443/tcp open  ssl/http-proxy sslstrip
 
   |_http-methods: No Allow or Public header in OPTIONS response (status code 302)
 
   | http-robots.txt: 10 disallowed entries
 
   | /baidu /s? /ulink? /link? /home/news/data/ /bh /shifen/
 
   |_/homepage/ /cpro /
 
   |_http-title: Site doesn't have a title (text/html).
 
   | ssl-cert: Subject: commonName=baidu.com/organizationName=Beijing Baidu Netcom Science Technology Co., Ltd/stateOrProvinceName=beijing/countryName=CN
 
   | Not valid before: 2020-04-02T06:04:58+00:00
 
   |_Not valid after:  2021-07-26T04:31:02+00:00
 
   |_ssl-date: 2021-03-16T03:14:21+00:00; +2d17h43m18s from local time.
 
   | tls-nextprotoneg:
 
   |_  http/1.1
 
   Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port
 
   Device type: specialized|switch
 
   Running (JUST GUESSING): AVtech embedded (88%), HP embedded (86%)
 
   OS CPE: cpe:/h:hp:procurve_switch_4000m
 
   Aggressive OS guesses: AVtech Room Alert 26W environmental monitor (88%), HP 4000M ProCurve switch (J4121A) (86%)
 
   No exact OS matches for host (test conditions non-ideal).
 
   Network Distance: 10 hops
 
   TRACEROUTE (using port 80/tcp)
 
   HOP RTT      ADDRESS
 
   1   0.97 ms  192.168.1.1
 
   2   4.96 ms  100.106.0.1
 
   3   ... 9
 
   10  15.25 ms 36.152.44.95
 
   OS and Service detection performed. Please report any incorrect results at http://nmap.org/submit/ .
 
   Nmap done: 1 IP address (1 host up) scanned in 37.64 seconds
 
  TCP 端口扫描
 
   [root@CentOS7-1 ~]# nmap -sT 192.168.1.100
 
   Starting Nmap 6.40 ( http://nmap.org ) at 2021-03-13 04:32 EST
 
   Nmap scan report for 192.168.1.100
 
   Host is up (0.00037s latency).
 
   Not shown: 999 closed ports
 
   PORT   STATE SERVICE
 
   22/tcp open  ssh
 
   Nmap done: 1 IP address (1 host up) scanned in 0.07 seconds
 
  扫描1-65535
 
   [root@CentOS7-1 ~]# nmap -p 1-65535 -T4 -A -v 192.168.1.100
 
   Starting Nmap 6.40 ( http://nmap.org ) at 2021-03-13 04:33 EST
 
   NSE: Loaded 110 scripts for scanning.
 
   NSE: Script Pre-scanning.
 
   Initiating Parallel DNS resolution of 1 host. at 04:33
 
   Completed Parallel DNS resolution of 1 host. at 04:33, 0.00s elapsed
 
   Initiating SYN Stealth Scan at 04:33
 
   Scanning 192.168.1.100 [65535 ports]
 
   Discovered open port 22/tcp on 192.168.1.100
 
   Discovered open port 19999/tcp on 192.168.1.100
 
   Completed SYN Stealth Scan at 04:33, 6.82s elapsed (65535 total ports)
 
   Initiating Service scan at 04:33
 
   Scanning 2 services on 192.168.1.100
 
   Completed Service scan at 04:33, 19.10s elapsed (2 services on 1 host)
 
   Initiating OS detection (try #1) against 192.168.1.100
 
   NSE: Script scanning 192.168.1.100.
 
   Initiating NSE at 04:34
 
   Completed NSE at 04:34, 0.14s elapsed
 
   Nmap scan report for 192.168.1.100
 
   Host is up (0.000032s latency).
 
   Not shown: 65533 closed ports
 
   PORT      STATE SERVICE VERSION
 
   22/tcp    open  ssh     OpenSSH 7.4 (protocol 2.0)
 
   | ssh-hostkey: 2048 37:71:8e:4a:db:cc:ac:29:f2:a2:20:93:23:8c:f6:e8 (RSA)
 
   |_256 cc:4b:7d:b6:59:0f:77:83:a9:a5:32:70:4e:87:0d:41 (ECDSA)
 
   19999/tcp open  unknown
 
   1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at http://www.insecure.org/cgi-bin/servicefp-submit.cgi :
 
   SF-Port19999-TCP:V=6.40%I=7%D=3/13%Time=604C86FA%P=x86_64-redhat-linux-gnu
 
   SF:%r(GenericLines,190,"HTTP/1.1x20400x20Badx20RequestrnConnection:
 
   SF:x20closernServer:x20NetDatax20Embeddedx20HTTPx20Serverx20v1.29
 
   SF:.3rnAccess-Control-Allow-Origin:x20*rnAccess-Control-Allow-Creden
 
   SF:tials:x20truernContent-Type:x20text/plain;x20charset=utf-8rnDate
 
   SF::x20Sat,x2013x20Marx202021x2009:33:46x20GMTrnCache-Control:x20
 
   SF:no-cache,x20no-store,x20must-revalidaternPragma:x20no-cachernExp
 
   SF:ires:x20Sat,x2013x20Marx202021x2009:33:47x20GMTrnContent-Length
 
   SF::x2027rnrnIx20don'tx20understandx20you...rn")%r(GetRequest
 
   SF:,5580,"HTTP/1.1x20200x20OKrnConnection:x20closernServer:x20Net
 
   SF:Datax20Embeddedx20HTTPx20Serverx20v1.29.3rnAccess-Control-Allow
 
   SF:-Origin:x20*rnAccess-Control-Allow-Credentials:x20truernContent-
 
   SF:Type:x20text/html;x20charset=utf-8rnDate:x20Tue,x2009x20Febx202
 
   SF:021x2010:11:54x20GMTrnCache-Control:x20publicrnExpires:x20Sun,
 
   SF:x2014x20Marx202021x2009:33:46x20GMTrnContent-Length:x2085228rn
 
   SF:rn
 
   SF:
 
  UDP 端口扫描
 
   [root@CentOS7-1 ~]# nmap -sU 192.168.1.100
 
   Starting Nmap 6.40 ( http://nmap.org ) at 2021-03-13 04:34 EST
 
   Nmap scan report for 192.168.1.100
 
   Host is up (0.0000040s latency).
 
   All 1000 scanned ports on 192.168.1.100 are closed
 
   Nmap done: 1 IP address (1 host up) scanned in 1.65 seconds
 

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