such as a web server, an application server, and a file server. In order for each of these services to communicate, they each listen and communicate on a specific port. When you make a connection to a server, you connect to the the IP address ...
获取开放指定端口的服务器列表(Get list of servers with a specific port open) nmap -sT -p 80 -oG – 192.168.66.* | grep open 1. 获取网络中所有存活的主机:Find all active IP addresses in a network nmap -sP 192.168.66.* 1. 不准确,该网络中还有3台存活主机192.168.66.100 192.168.66.106 19...
Scanning specific ports or a range of ports To scan a specific port we use the -p option, followed by the port: nmap -p 22 scanme.nmap.org Output Starting Nmap 7.91 ( https://nmap.org ) at 2021-05-09 16:26 EEST Nmap scan report for scanme.nmap.org (45.33.32.156) Host is up (...
Scanning a specific port At its most basic, Nmap can scan a single port by just specifying the target port number with the-poption. Let’s see some popular port scan examples: Apache Port80and443: Port80is the default port number for HTTP requests on Apache. You can scan it with Nmap ...
Nmap transmitsTCPand UDP packets to a specific port during this type of scan, then examines the response. It uses a database of 2600 operating systems to compare this response, and it then returns details on the OS (and version) of a host. ...
To use Nmap to scan a specific port use the-p<port>flag to define the port followed by the-sUflag to enable UDP scan before specifying the target, to scan LinuxHint for the 123 UDP NTP port run: #nmap-p123-sU linuxhint.com
Port range: # nmap -p1-100 localhost All ports: # nmap -p- localhost Specific ports by protocols: # nmap -pT:25,U:53 <target> Service name: # nmap -p smtp <target> Service name wildcards: # nmap -p smtp* <target> Only ports registered in Nmap services: # nmap...
To scan a single host for open ports, use the following command: nmap <target>。 To scan a range ofhosts for open ports, use the following command: nmap <target-range>。 To scan a specific port on a host, use the following command: nmap -p <port> <target>。 To scan a host for...
协议的特定端口 Specific Ports by Protocols 默认情况下,端口扫描更喜欢枚举 TCP 端口的状态,但如果您想扫描 TCP 端口和 UDP 端口,请执行以下命令: 语法:nmap -pT:25,U:53 <目标> 端口服务名称 Port Service name 如果您不知道用于枚举的准确端口号,那么您也可以提及用于端口状态扫描的服务名称。
$ nmap1.1.1.1-sL There is another useful feature of Nmap: a TCP SYN ping scan. In place of an ICMP ping, the TCP SYN ping can treat the target host as online if it responds to a SYN request on a specific port. For example, when scanning an IP block that normally runs web servers...