add install instruction and initial tor configuration

opsec/anonymous_server_monitoring/index.html

@@ -204,12 +204,43 @@
                         <h1><b>Setting up the Server</b></h1>
 
                         First you want to set up your central monitoring server. For ease of use and better performance we are going to colocate the prometheus collector along with grafana.
+                        <br>
+
+                        <h2>Required installation</h2>
+
+                        To get started we need the following software on the machine:
+                        <br>
+                        <ul>
+                            <li>Tor: anonymize traffic</li>
+                            <li>prometheus: aggregate metrics</li>
+                            <li>prometheus-node-exporter: export local server metrics</li>
+                            <li>docker: to run grafana</li>
+                        </ul>
+                        <img src="install.png"/>
+
 
                         <h2>Tor Configuration</h2>
                         The prometheus collector will only be accessed locally by grafana so it doesn't need to be accessible over tor. Grafana, on the other hand, does.
                         <br>
 
-                        Let's start with our torrc:<br>
+                        Let's start with tor's configuration, use the following commands as root:
+
+                        <br>
+<pre><code class="nim">
+sudo systemctl stop tor #stop the tor service
+
+mkdir -p /var/lib/tor/auth_keys #create the client auth keys folder to store our second layer of authentication
+chmod 400 -R /var/lib/tor/auth_keys #set restrictive file permissions
+chown tor:tor -R /var/lib/tor/auth_keys # make tor owner of this folder
+
+vi /etc/tor/torrc #edit the torrc file to add content
+
+systemctl start tor #restart tor
+systemctl status tor #check that everything works
+</code></pre>
+
+and add the content below:
+
 <pre><code class="nim">
 AutomapHostsSuffixes .onion,.exit
 DataDirectory /var/lib/tor