New: Configure ssh-keys in Mikrotik

Configure ssh keys in Mikrotik.md

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+---
+tags: tutorial, network, mikrotik, ssh, security
+---
+
+# Configure ssh keys in Mikrotik
+
+```mikrotik
+# Create a dummy file
+/file print file=dummyFile
+# Set its content to the public key
+/file set dummyFile.txt contents="ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA7QEcjRkbBWpwE7zIShobue9aEGyVObVHDLhK"
+# Assign public key to user
+/user ssh-keys import public-key-file=dummyFile.txt user=admin
+```
+
+Change the *public key*, and *user* accordingly
+
+## What led to learning this
+
+After having troubles with a mikrotik router I had to reconfigure it from scratch (didn't have a backup :sad:), and in the process the router got hacked, which pushed me to improve security measures