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OSPF Network Types

OSPF Network Types Why does OSPF need network types? Routers can be connected via various types of WAN services. Many old and new WAN technologies can provide IP connectivity between devices. To...

OSPF Metric – Cost

OSPF Metric – Cost OSPF Metric – Cost This lesson discusses how OSPF determines the best paths to destinations using its metric called “OSPF Cost”. It is a fundamental concept...

Configuring Single-Area OSPF network

Configuring Single-Area OSPF network Lab Initial State We use the topology shown in the diagram below. Seven network devices are located at three locations: the data center, large, and small branches...

OSPF Passive Interface

OSPF Passive Interface Why do we need an OSPF passive interface? A router often does not need to form neighbor relationships on every interface. For example, the router in the diagram below has five...

DMVPN

GRE & DM-VPN History of DM-VPN The history of DMVPN (Dynamic Multipoint VPN) is closely tied to the evolution of enterprise networking and the need for scalable, secure, and cost-effective WAN...

Ethernet Cable

Ethernet Connector RJ45 Connector What is “RJ45” Do you know the meaning of “RJ45”? Let me explain it. “RJ” is the abbreviation of “registered jack”, which originally means a standardized telecoms...

Cable Media

Transmission Media Transmission Media in Computer Network Introduction The modern global environment is constantly evolving. Data Communication and networking technologies have revolutionized many...

Network Eng Course

IT Courses What is CompTIA+ What is CompTIA+ CompTIA+ refers to a group of IT certifications offered by CompTIA. These certifications are vendor-neutral, meaning they are not limited to one company...

OSPF Commnds

OSPF Commnds Check OSPF configuration, status, and neighbors on Cisco routersshow ip ospf neighbor Displays OSPF neighbors and their current state, including IP addresses, interface, state, and...

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Network Switch vs Network Router vs Network Firewall

Router, Switch, and Firewall Differences Between Router and Firewall What is a Router A router is a networking device used to help route traffic from source to destination. Routers have an upstream...

Network Firewall Interview Questions

Basic Firewall Interview Questions and Answers 1. What is a firewall? A firewall acts as a line of defense in a network. It acts as a barrier between a trusted and a non-trusted network. It...

Remote Access IPsec VPN

Remote Access IPsec VPN What Is A Remote Access VPN? A remote access virtual private network (VPN) enables users to connect to a private network remotely using a VPN. Employees who need to access...

Site to Site VPN Fortinet

Site to Site VPN Fortinet Types Of Virtual Private Networks (VPN) There are two main types of VPN that people can use to securely connect to corporate networks. 1. Remote access VPN A remote access...

Fortinet NSE 4, NSE 5 and NSE 7 certifications

Fortigate Certification What is FortiGate Certification Course FortiGate certification is a professional cybersecurity training program focused on configuring, managing, and securing networks using...

What is Fortinet

What is Fortinet Fortinet, Inc. is an American cybersecurity company headquartered in Sunnyvale, California, who develop and market security solutions like firewalls, endpoint security and intrusion...