With a simulator, there are always missing commands and programming errors, and it can never really be as complete as the real IOS. However, because an emulator runs the IOS, you get every feature ...

Network security relies heavily on passwords. Cisco routers use passwords to ensure that only "trusted" users can perform certain services. In this Daily Drill Down, Todd Lammle takes you on a journey ...

In Cisco LAN switch environments, the native VLAN is typically untagged on 802.1Q trunk ports. This can lead to a security vulnerability in your network environment. It is a best practice to ...

It's no surprise that Linux makes a great router and firewall. A lesser-known fact is that you also can use Linux as an Ethernet bridge and VLAN switch, and that these features are similarly powerful, ...