RouterOS by Example is a great start for beginners learning the MikroTik software as well as a solid reference for intermediate to advanced users! Why RouterOS by Example? RouterOS by Example covers all of the subjects presented in the MikroTik Certified Network Associate certification course, each explained through real life examples. Dyre (a Routeros by example second edition. “Dyreza”) is generally installed by a downloader Trojan that is flagged by most tools under the name “Upatre.