Skip to content
NEW: Get Lifetime access to 8 courses, 3 certifications, 5 eBooks, and all future courses for just $199 - [Claim Offer]
Tecmint: Linux Howtos, Tutorials & Guides
  • Learn Linux
  • Linux Distros
    • Linux Distros for Beginners
    • Linux Distros for Experts
    • New Linux Distros
    • Linux Server Distros
    • Secure Linux Distros
    • CentOS Alternatives
    • RedHat Distributions
    • Debian Distributions
    • Ubuntu Distributions
    • Arch Linux Distros
    • Rolling Linux Distros
    • KDE Linux Distros
    • Linux Distros for Old PC
    • Linux Distros for Kids
    • Linux Distributions for Students
    • Linux Distros for Windows
  • Commands
    • A – Z Linux Commands
    • 100+ Linux Commands
  • Tools
  • Pro Courses
    • Bash Scripting
    • Learn Linux
    • AI for Linux
    • RHCSA Certification
    • RHCE Certification
    • LFCS Certification
  • eBooks
    • RHCSA Exam
    • RHCE Exam
    • LFCS Exam
    • LFCE Exam
    • LFCA Exam
    • Ansible Exam
  • About
    • Contact
    • Hiring
    • Newsletter
    • Testimonials
    • Donate
    • Advertise
    • Submit Article Request
    • Suggest an Update
Tecmint: Linux Howtos, Tutorials & Guides
  • Learn Linux
  • Linux Distros
    • Linux Distros for Beginners
    • Linux Distros for Experts
    • New Linux Distros
    • Linux Server Distros
    • Secure Linux Distros
    • CentOS Alternatives
    • RedHat Distributions
    • Debian Distributions
    • Ubuntu Distributions
    • Arch Linux Distros
    • Rolling Linux Distros
    • KDE Linux Distros
    • Linux Distros for Old PC
    • Linux Distros for Kids
    • Linux Distributions for Students
    • Linux Distros for Windows
  • Commands
    • A – Z Linux Commands
    • 100+ Linux Commands
  • Tools
  • Pro Courses
    • Bash Scripting
    • Learn Linux
    • AI for Linux
    • RHCSA Certification
    • RHCE Certification
    • LFCS Certification
  • eBooks
    • RHCSA Exam
    • RHCE Exam
    • LFCS Exam
    • LFCE Exam
    • LFCA Exam
    • Ansible Exam
  • About
    • Contact
    • Hiring
    • Newsletter
    • Testimonials
    • Donate
    • Advertise
    • Submit Article Request
    • Suggest an Update

firewalld Tips

Open Port for IP Address in CentOS

How to Open Port for a Specific IP Address in Firewalld

How can I allow traffic from a specific IP address in my private network or allow traffic from a specific

Upgrade Your Linux Learning with Pro.Tecmint

If you find TecMint helpful, consider supporting us by subscribing to Pro.Tecmint.com – our premium platform with exclusive guides, ad-free experience, early access to tutorials, and much more.

Your support helps us keep creating quality Linux content for everyone.

Get Lifetime Access

Linux Commands and Tools

How to Check Remote Ports are Reachable Using ‘nc’ Command

How to Control Kernel Boot-Time Parameters in Linux

Discus – Show Colourised Disk Space Usage in Linux

How to Clear RAM Cache, Buffers, and Swap in Linux Without Reboot

How to Block USB Storage Devices in Linux Servers

How to Create Users in Linux [15 useradd Command Examples]

Linux Server Monitoring Tools

How to Install Zabbix on RHEL 8

Sysmon – A Graphical System Activity Monitor for Linux

Trickle – Control Network Traffic Bandwidth Of Applications in a Linux

bmon – A Powerful Network Bandwidth Monitoring and Debugging Tool for Linux

How to Install Nagios Core in Rocky LInux and AlmaLinux

whowatch – Monitor Linux Users and Processes in Real Time

Learn Linux Tricks & Tips

How to Save Command Output to a File in Linux

How to Find Number of Files in a Directory and Subdirectories

6 Best CLI Tools to Search Plain-Text Data Using Regular Expressions

How to Backup or Clone Linux Partitions Using ‘cat’ Command

How to Create a Virtual HardDisk Volume Using a File in Linux

Find Out All Live Hosts IP Addresses Connected on Network in Linux

Best Linux Tools

3 Best Cloud-Based Music Apps for Linux

4 Best Tools for Creating Fillable PDF Forms on Linux

8 Best IRC Clients for Linux in 2024

15 Best Tiling Window Managers for Linux in 2025

How to Open and Edit Apple iWork Files on Linux

32 Best File Managers and Explorers [GUI + CLI] for Linux in 2024

Tecmint: Linux Howtos, Tutorials & Guides © 2026. All Rights Reserved.

The material in this site cannot be republished either online or offline, without our permission.

Hosting Sponsored by : Linode Cloud Hosting