Cisco Cisco Email Security Appliance C160 Mode D'Emploi
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User Guide for AsyncOS 10.0 for Cisco Email Security Appliances
Chapter 29 Using Email Security Monitor
Email Security Monitor Pages
TLS Connections Page
The TLS Connections pages shows the overall usage of TLS connections for sent and received mail. The
report also shows details for each domain sending mail using TLS connections.
report also shows details for each domain sending mail using TLS connections.
The TLS Connections page can be used to determine the following information:
•
Overall, what portion of incoming and outgoing connections use TLS?
•
What partners do I have successful TLS connections with?
•
What partners do I have unsuccessful TLS connections with?
•
What partners have issue with their TLS certificates?
•
What percent of overall mail with a partner uses TLS?
The TLS Connections page is divided into a section for incoming connections and a section for outgoing
connections. Each section includes a graph, summaries, and a table with details.
connections. Each section includes a graph, summaries, and a table with details.
The graph displays a view of incoming or outgoing TLS-encrypted and non-encrypted connections over
the time range you specify. The graph displays the total volume of messages, the volume of encrypted
and unencrypted messages, and the volume of successful and failed TLS encrypted messages. The
graphs distinguish between connections in which TLS was required and connections in which TLS was
merely preferred.
the time range you specify. The graph displays the total volume of messages, the volume of encrypted
and unencrypted messages, and the volume of successful and failed TLS encrypted messages. The
graphs distinguish between connections in which TLS was required and connections in which TLS was
merely preferred.
The table displays details for domains sending or receiving encrypted messages. For each domain, you
can view the number of required and preferred TLS connections that were successful and that failed, the
total number of TLS connections attempted (whether successful or failed), and the total number of
unencrypted connections. You can also view the percentage of all connections in which TLS was
attempted, and the total number of encrypted messages sent successfully, regardless of whether TLS was
preferred or required. You can show or hide columns by clicking the Columns link at the bottom of this
table.
can view the number of required and preferred TLS connections that were successful and that failed, the
total number of TLS connections attempted (whether successful or failed), and the total number of
unencrypted connections. You can also view the percentage of all connections in which TLS was
attempted, and the total number of encrypted messages sent successfully, regardless of whether TLS was
preferred or required. You can show or hide columns by clicking the Columns link at the bottom of this
table.
Inbound SMTP Authentication Page
The Inbound SMTP Authentication page shows the use of client certificates and the SMTP AUTH
command to authenticate SMTP sessions between the Email Security appliance and users’ mail clients.
If the appliance accepts the certificate or SMTP AUTH command, it will establish a TLS connection to
the mail client, which the client will use to send a message. Since it is not possible for the appliance to
track these attempts on a per-user basis, the report shows details on SMTP authentication based on the
domain name and domain IP address.
command to authenticate SMTP sessions between the Email Security appliance and users’ mail clients.
If the appliance accepts the certificate or SMTP AUTH command, it will establish a TLS connection to
the mail client, which the client will use to send a message. Since it is not possible for the appliance to
track these attempts on a per-user basis, the report shows details on SMTP authentication based on the
domain name and domain IP address.
Use this report to determine the following information:
•
Overall, how many incoming connection use SMTP authentication?
•
How many connections use a client certificated?
•
How many connections use SMTP AUTH?
•
What domains are failing to connect when attempting to use SMTP authentication?
•
How many connections are successfully using the fall-back when SMTP authentication fails?
The Inbound SMTP Authentication page includes a graph for received connections, a graph for mail
recipients who attempted an SMTP authentication connection, and a table with details on the attempts
to authenticate connections.
recipients who attempted an SMTP authentication connection, and a table with details on the attempts
to authenticate connections.