This time I'll present you a little fun project aside the omnipresent network topic in this blog. While moving to another appartment, I had the chance to catch a glimpse of the stuff I stocked in my cellar. Among other things I found some 7-segment displays, some binary counters and 7-segment display drivers.
When working with networks, you have to deal with different devices from different vendors. When it comes to SFP tranceivers, you often need vendor specific transceivers because vendors tend to apply some sort of vendor locks. Despite SFP beeing a standard, you need SFP transceivers from your device's vendor. I found a nice solution to circumvent these requirements.
Over time, jumpNet's VPN servers became bottlenecks regarding bandwidth. Currently, the best VPN server in jumpNet offers 20MBit/s upstream, which is okay but not sufficient for large file transfers like backups. In this article, I describe how to build a L2TP/IPSec VPN server with OSPF routing capability.
jumpNet is fine - no question. But it's small and some how I got used to it. There is little new to discover (maybe I'm going to realize a point-to-point radio link this summer, but that's another story) and so I decided to follow up an old plan: Connecting the jumpNet to dn42.