networking

Networking

IPsec vs SSL VPN: How They Work, Security and Use Cases

VPNs can use different technologies to create secure connections. Two important approaches are IPsec VPNs and SSL/TLS-based…

Networking

What is a VPN? Site-to-Site VPN, Remote-Access VPN and Encryption Explained

Modern organizations often need employees, offices, and remote locations to securely communicate over networks such as the…

Networking

What is an Access Control List (ACL)? Standard and Extended ACLs Explained

Network devices constantly receive and forward packets. But not every packet should be allowed to reach every destination.

Networking

What is Port Security on a Cisco Switch? MAC Limits, Sticky MAC and Violation Modes

A network switch connects many devices together, but an improperly configured switch port can allow unauthorized devices…

Networking

What is Inter-VLAN Routing? Router-on-a-Stick and Layer 3 Switches Explained

VLANs are used to logically separate devices within a network. However, devices in different VLANs cannot communicate directly…

Networking

What is EtherChannel? Link Aggregation, Redundancy, LACP and PAgP Explained

Modern networks often require more bandwidth and redundancy between switches. Connecting two switches with a single Ethernet…