PSU MacAdmins is a great conference for MacAdmins across the world to come together to talk about issues that are happening in the Mac world. This year I have the privilege to speak at the conference on a topic that I have blogged about previously Packet Firewall (PF). The talk is similar to the one I gave at MacTech 2015, with updated slides and an example of how to use the ELK stack (Elastisearch, Logstash, Kibana) to build a dashboard of pf.log data. Visualization provides a quick glance at pf data or can provide enough information to determine how often an IP address are hitting all of your clients. Here is the slide deck.