Cisco Cisco Email Security Appliance C160 Betriebsanweisung
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Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
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Chapter 3 Setup and Installation
In some scenarios, the IronPort appliance resides inside the network “DMZ,” in
which case an additional firewall sits between the IronPort appliance and the
groupware server.
which case an additional firewall sits between the IronPort appliance and the
groupware server.
The following network scenarios are described:
•
Behind the Firewall (see
Choose the configuration that best matches your infrastructure. Then proceed to
the next section,
the next section,
.
Incoming
•
Incoming mail is accepted for the local domains you specify. (See )
•
All other domains are rejected.
•
External systems connect directly to the IronPort appliance to transmit email
for the local domains, and the IronPort appliance relays the mail to the
appropriate groupware servers (for example, Exchange™, Groupwise™,
Domino™) via SMTP routes. (See “Routing Email for Local Domains” in the
Cisco IronPort AsyncOS for Email Advanced Configuration Guide.)
for the local domains, and the IronPort appliance relays the mail to the
appropriate groupware servers (for example, Exchange™, Groupwise™,
Domino™) via SMTP routes. (See “Routing Email for Local Domains” in the
Cisco IronPort AsyncOS for Email Advanced Configuration Guide.)
Outgoing
•
Outgoing mail sent by internal users is routed by the groupware server to the
IronPort appliance.
IronPort appliance.
•
The IronPort appliance accepts outbound email based on settings in the Host
Access Table for the private listener. (For more information, see
Access Table for the private listener. (For more information, see
Ethernet Interfaces
•
Only one of the available Ethernet interfaces on the IronPort appliance is
required in these configurations. However, you can configure two Ethernet
interfaces and segregate your internal network from your external Internet
network connection.
required in these configurations. However, you can configure two Ethernet
interfaces and segregate your internal network from your external Internet
network connection.
See “Using Virtual Gateway™ Technology” in the Cisco IronPort AsyncOS for
Email Advanced Configuration Guide and
Email Advanced Configuration Guide and
for more information about assigning multiple IP addresses to the
available interfaces.