There are some things in life that seem too good to be true. So good, in fact, that they border on the edge of mythology. We see this often in the case of Cross-Domain Topology. Cross-Domain Topology ties together all the pieces of a hybrid, dynamic IT environment, so you can instantly see how changes impact your environment. It’s something that a lot of people didn’t even think was a possibility. While unicorns are myths, Cross-Domain Topology is very real. Here’s how it works.
Mixing your personal and work devices while connected to your home network and accessing the Internet is a risky proposition from a security and privacy standpoint. Why? I frequently monitor my firewall logs. What I observe on my WAN interface are blocked IP addresses sourced from adversarial nation states which makes the hair on the back of my neck stand up.
As many users of Icinga don’t know what the DSL has to offer, I’m going to show you how to use custom variables and apply for rules to make your life easier when writing configuration for your Icinga environment. In this example we will use custom variables on a host to configure a dynamic set of services to monitor multiple web services behind a reverse proxy. On the host we define a custom dictionary called http_vhosts and assign our virtual hosts to it.
