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+====== Server Name Indication based metrics ======
+This article helps with providing steps to install and use the SNI TLS Metrics app in Trisul Network Analytics.
+**
+To provide visibility into TLS/SSL traffic by breaking it up by SNI Hostname.
+**
+{{:tips:sni-tls.png?200|}}
+SNI stands for Server Name Indication.It indicates the hostname thT is being contacted by the browser at the beginning of a handshake.This feature allows a server to connect multiple SSL Certificates to one IP address and gate.
+This app provides the following 3 metrics namely,
+  - A new Counter Group called "SNI"
+  - A new Resource Group called "SNI" contains IP->SNI hostname mapping.
+  - Top SNI Hostnames for each meter by bandwidth and hits.
+===== Installing =====
+  * You can install the app by logging on as Admin,and selecting //Web Admin > Manage > Apps > SNI TLS Metrics.//
+  * Restart the probes.
+{{:tips:sni-tls-admin.png?600|}}
+===== Viewing Data =====
+The app shows the following metrics,
+  * meter 0 : bandwidth per hostname.
+  * meter 1 : flows/hits per hostname.
+You can view the metrics by selecting //Retro > Retro Counters.//
+{{:sni-tlsmetricss.png?600|}}