linux check port open

I need a Linux command to list all free open ports for use in an application lsof -i TCP| fgrep LISTEN Does not seen to be helping as the Ports it lists are not necessarily free for use.

相關軟體 Nmap 下載

Nmap是一套開放原始碼的軟體,它的功能主要是網路探測和安全稽核,能快速掃描大型網絡,並檢測本機或網路遠端主機的安全性弱點,進行弱點分析,有助增強系統及網路安全服務。 靈活:支援幾十種網絡技術,包含IP過濾器、防火牆、路由器和其他障礙。 ...

了解更多 »

  • I need a Linux command to list all free open ports for use in an application lsof -i TCP| ...
    Get a list of Open Ports in Linux - Super User
    https://superuser.com
  • Check and open ports in CentOS / Fedora / Redhat If you want to open or close a port for a...
    Check and open ports in CentOS Fedora Redhat - ...
    https://www.serverpronto.com
  • Opening Ports in a Linux Firewall This guide applies only to users of Linux based operatin...
    Opening Ports in a Linux Firewall - Tixati.com - Home
    https://www.tixati.com
  • If you’re troubleshooting a service that you know is running normally the next step is to ...
    Check listening ports with netstat - Rackspace Support
    https://support.rackspace.com
  • So I can use this netcat command to check if a UDP port is open: $ nc -vz -u 10.1.0.100 53...
    How does netcat know if a UDP port is open? - Unix & Lin ...
    https://unix.stackexchange.com
  • One may want to check open ports on Ubuntu to ensure that there are no services listening ...
    Check open ports on Ubuntu Linux | Web Development Tutorials ...
    http://www.tutorialarena.com
  • How do I open port 80 and 443 on a Ubuntu Linux LTS version 14.04 server? Ubuntu Linux ser...
    How To: Ubuntu Linux Firewall Open Port Command – nixCraft ...
    https://www.cyberciti.biz
  • I want to install webserver-apache on a Linux platform which uses port no.80 but I am not ...
    linux - How to check if a certain port is open and unused? - ...
    https://stackoverflow.com
  • Hi, i 'm basically new to linux and i wanted to know whether there are any port check ...
    [SOLVED] Port check in Linux? - LinuxQuestions.org ...
    https://www.linuxquestions.org
  • List open ports and listening services If you're looking for a way to discover which p...
    List open ports and listening services - TechRepublic
    http://www.techrepublic.com