Diagrams with C4 Model


This post is for everyone who draws computer pictures for a living…

The genesis for this post came from a comment on the diagrams-as-code post (via LinkedIn) that called out the C4 Model[1]:


I hadn’t heard of C4 Model before so I decided to check it out. A first look at the C4 Model web site piqued my interest – Continue reading

Collecting NetFlow with nfcapd and nfdump

This blog post is for network experimenters who want to collect (receive) NetFlow or IPFIX flow records using the nfdump package (which includes nfcapd). An example use case, building on previous blog post NetFlow on OpenWRT, is shown in diagram below (highlighted boxes):


Flow records can be useful for various applications such as network visibility and security alerting. Continue reading