Please note that for the above links to work, someone on your instance needs to have already subscribed to or searched for the remote community so it populates on your instance. You can search in Communities > All for [email protected], as an example, and then the links should work after a few seconds.
Came here to suggest the same as @[email protected]. I also just created a community dedicated to Security Architecture. Feel free to subscribe and engage there too if you'd like.