Copy IOS image to a Cisco router from ROMmon

If you accidentally erased your flash or have a Cisco router with an empty flash, you can upload an IOS image from ROMmon to recover the device to a functional router. Connect your router via console-cable to a PC and use PuTTY to connect to your device. I use TFTPD32 from Philippe Jounin. When starting … Read more

Can everyone see me?

I linked my twitter account with my LinkedIn Account 🙂 so now everyone can see my blogposts @ the LinkedIn start page. Does anyone know how to connect a XING profile with twitter?

Site2Site IPSec VPN Tunnel with Cisco EasyVPN

In Germany some internetprovider doesn’t offer a static WAN IP address. So the easiest way to connect a branch office router via IPsec VPN protocol to the central network address is using a Cisco EasyVPN connection with network-extension mode. In this example we have two networks: The IP subnet of our mainoffice is /24 … Read more

Understanding ip nat outside Rules

One of my customers has a separated network within their internal network. Mobile devices (Android Phones, iPhones, etc.) are connected to a consumer access point which is connected behind the Cisco Router 876:       The Traveler service is also rechable via internet (configured with PAT pointed to the Traveler server). In the past, … Read more

Hello World!

Welcome to my new site! My name is Michel, currently I’m living in germany. I installed a new wordpress blog for sharing my knowledge (primarily about networking) from products from Cisco, Sophos, Astaro and HP. Feel free to share my posts and use this platform to comment and discuss your/our problems and contribute to solve … Read more