IANA and Regional Internet Registries (RIR) - Free Network

IANA or Internet Assigned Numbers Authority is responsible for the global coordination of the DNS Root, IP addressing, and other Internet protocol resources including Autonomous System (AS) numbers...

Registered TCP & UDP Ports in Networking - Free Network

Network ports are software defined number that is associated to a network protocol that transmits or receives or transmits communication for a specific application or service. It is used by Transport...

Well-Known TCP & UDP Ports in Networking - Free Network

Network ports are software defined number that is associated to a network protocol that transmits or receives or transmits communication for a specific application or service. It is used by Transport...

Secure Cron Permissions and Ownerships for Ubuntu Linux | Free Linux Tutorials

Cron is a job scheduler tool used to schedule commands, jobs or scripts for automatic execution at specific interval, fixed times or dates. Enable or start cron service systemctl --now enable cron To...

TCP vs UDP Comparison Table - Free Network

Transmission Control Protocol (TCP) - is a connection-oriented communications protocol that is used to ensure reliable transmission of packets between computing devices in a network. User Datagram...

uRPF Configuration on Juniper (MX,SRX,EX,QFX Series) - Free Network

uRPF or Unicast Reverse Path Forwarding is a security feature/tool that help verifies reachability of source address in packets being forwarded. It can prevents malicious and spoofing attacks as it...

uRPF Configuration on Cisco (IOS,IOS-XR,NX-OS) - Free Network

uRPF or Unicast Reverse Path Forwarding is a security feature/tool that help verifies reachability of source address in packets being forwarded. It can prevents malicious and spoofing attacks as it...

Run Android Apps on Linux Part 2 : Install Genymotion and Google Playstore on Ubuntu | Free Linux...

1.Run package updates and repositories sudo apt update 2. Install Virtualbox sudo apt install virtualbox Sample Output: tux@FreeLinux:~$ sudo apt install virtualbox Reading package lists... Done...

Run Android Apps on Linux : Install Anbox and Google Playstore on Ubuntu | Free Linux Tutorials

If you come from Windows and you are used to running Android emulators like Bluestacks, don't worry Linux has a lot of ways to run Android apps, one way is using Anbox. Android in a Box or "Anbox" as...

Installation and Configuration of Conky and Conky-Manager on Ubuntu Linux | Free Linux Tutorials

Conky is a free desktop system monitor for X Window System for Linux and highly configurable to display system information like CPU, memory, disk and network utilization. 1.Install the package...

Virtual Port Channel (vPC) Configuration on Cisco Nexus - Free Network

As per Cisco documentation: A virtual PortChannel (vPC) allows links that are physically connected to two different Cisco Nexus devices to appear as a single Port Channel to a third device. The third...

Best Security Template of Cisco IOS-XR for AAA,SSH,NTP,SNMP and Syslog - Free Network

Quick Tip: Install Sticky Notes on Ubuntu 20.04 Linux | Free Linux Tutorials

There are few sticky notes apps that you can install and use for Ubuntu desktop. One of the popular option is the Indicator Sticky Notes Here's how to install it using PPA repository. When you add...

Installing Wine on Ubuntu Linux | Free Linux Tutorials

Wine is a free and open-source compatibility layer that allows you to run Microsoft Windows applications on Unix-like operating systems such as Linux. It is originally an acronym for "Wine Is Not an...

LACP Configuration on Cisco IOS, IOS-XE, IOS-XR and NX-OS - Free Network

Link Aggregation Control Protocol or IEEE 802.3ad (LACP) is an open standard of Ethernet link aggregation protocol. It is a method used by routers/switches to automatically establish link aggregation...