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Editor to share with you the use of linux nmap command network detection tools and security and port scanners, I believe that most people do not know much, so share this article for you to learn, I hope you will learn a lot after reading this article, let's go to learn methods!

Nmap ("Network Mapper") is an open source tool for network exploration and security auditing. Its design goal is to quickly scan large networks, and of course there is no problem using it to scan a single host. Nmap uses raw IP messages in a novel way to discover which hosts are on the network, what services those hosts provide (application names and versions), what operating systems those services run on (including version information), what type of message filters / firewalls they use, and a host of other features. Although Nmap is commonly used for security audits, many system administrators and network administrators also use it to do routine tasks, such as viewing information across the network, managing service upgrade plans, and monitoring hosts and services.

In addition to the list of ports of interest, Nmap can also provide further information about the target, including reverse domain names, operating system guesses, device types, and MAC addresses.

Syntax format: nmap [parameters]

Common parameters:

-- traceroute scans host ports and tracks routes-p scans designated ports and port ranges-sP scans target hosts for ping-A scans using advanced features-PE enforces direct ICMPping-sV probe service version information-d outputs additional debugging information-PU sends udp ping-ps sends synchronization (SYN) messages

Reference example

Scan the host and trace the route:

[root@linuxcool] # nmap-- traceroute www.linuxcool.com

Use the-p parameter to detect ports 80 and 443:

[root@linuxcool] # nmap-p80443 www.linuxcool.com

Probe server's port range of 1-10000:

[root@linuxcool] # nmap-p1-10000 www.linuxcool.com

Use the-A parameter for advanced scanning:

[root@linuxcool ~] # nmap-A www.linuxcool.com above is all the contents of the network probe tool and security and port scanner using linux's nmap command. Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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