David Davis goes over the Cisco IOS commands you must know to manipulate files on your Cisco router flash, nvram, or other filesystems, allowing you to back up your configuration, upgrade your router, ...

David Davis introduces the Archive command in Cisco, which you can configure to log all commands on your router. If you need to back up to a previous configuration, or see what went wrong after a ...

I never update my router without doing this two-minute step first ...

This month's article will introduce network router programming. If you have not worked with IT infrastructure, you may be surprised at the number of options and possible configurations available to ...

It's been years since I did anything hardcore like reprogramming routers. We've got a situation where we are using a router, it works fine, but we need to switch over to a new config with increased ...

Firmware is the software embedded in your router. Its firmware helps the router figure out how to carry on different tasks. To update it, you have to flash the updated software in the router. We’ll ...

Cybersecurity nowadays requires more (and better) protective measures than ever before. These measures range from adopting what are acknowledged as best practices, through helping end-users to stay ...

I left my router on default settings for years—here’s why you should change yours today ...

Previous articles (Part one, Part two) in this series on implementing VPN gateways using Cisco routers discussed the IPsec protocol and basic IPsec VPN connection models. Now we'll learn how to ...