Cisco Cisco Email Security Appliance C160 Mode D'Emploi
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Cisco AsyncOS 8.0.2 for Email User Guide
Chapter 3 Setup and Installation
Using the System Setup Wizard
Click Next to continue.
Step 3: Network
In Step 3, you define the default router (gateway) and configure the DNS settings, and then set up the
appliance to receive and or relay email by configuring the Data 1, Data 2, and Management interfaces.
appliance to receive and or relay email by configuring the Data 1, Data 2, and Management interfaces.
Configuring DNS and Default Gateway
Type the IP address of the default router (gateway) on your network. You can use an IPv4 address, an
IPv6 address, or both.
IPv6 address, or both.
Next, configure the DNS (Domain Name Service) settings. Cisco AsyncOS contains a high-performance
internal DNS resolver/cache that can query the Internet’s root servers directly, or the system can use
DNS servers you specify. If you choose to use your own servers, you will need to supply the IP address
and hostname of each DNS server. You can enter up to four DNS servers via the System Setup Wizard.
Please note that DNS servers you enter will have an initial priority of 0. For more information, see
internal DNS resolver/cache that can query the Internet’s root servers directly, or the system can use
DNS servers you specify. If you choose to use your own servers, you will need to supply the IP address
and hostname of each DNS server. You can enter up to four DNS servers via the System Setup Wizard.
Please note that DNS servers you enter will have an initial priority of 0. For more information, see
Note
The appliance requires access to a working DNS server in order to perform DNS lookups for incoming
connections. If you cannot specify a working DNS server that is reachable by the appliance while you
are setting up the appliance, a workaround is to either select “Use Internet Root DNS Servers” or to
specify, temporarily, the IP address of the Management interface so that you can complete the System
Setup Wizard.
connections. If you cannot specify a working DNS server that is reachable by the appliance while you
are setting up the appliance, a workaround is to either select “Use Internet Root DNS Servers” or to
specify, temporarily, the IP address of the Management interface so that you can complete the System
Setup Wizard.
Configuring Network Interfaces
Your Cisco appliance has network interfaces that are associated with the physical ports on the machine.
For example, on C660/670, C360/370, and X1060/1070 appliances, three physical Ethernet interfaces
are available. On C160/170 appliances, two physical Ethernet interfaces are available.
For example, on C660/670, C360/370, and X1060/1070 appliances, three physical Ethernet interfaces
are available. On C160/170 appliances, two physical Ethernet interfaces are available.
To use an interface, mark the “Enable” checkbox and then specify an IP address, network mask, and fully
qualified hostname. The IP address you enter should be the address intended for your inbound mail as
reflected in your DNS records. Typically this address would have an MX record associated with it in
DNS. You can use an IPv4 address, an IPv6 address, or both. If you use both, the interface will accept
both types of connections.
qualified hostname. The IP address you enter should be the address intended for your inbound mail as
reflected in your DNS records. Typically this address would have an MX record associated with it in
DNS. You can use an IPv4 address, an IPv6 address, or both. If you use both, the interface will accept
both types of connections.
Each interface can be configured to accept mail (incoming), relay email (outgoing), or appliance
management. During setup, you are limited to one of each. Typically, you would use one interface for
incoming, one for outgoing, and one for appliance management. On the C160/170 appliances, you would
typically use one interface for both incoming and outgoing mail, and the other interface for management.
management. During setup, you are limited to one of each. Typically, you would use one interface for
incoming, one for outgoing, and one for appliance management. On the C160/170 appliances, you would
typically use one interface for both incoming and outgoing mail, and the other interface for management.
You must configure one interface to receive email.
Assign and configure a logical IP address to one of the physical Ethernet interfaces on the appliance. If
you decide to use both the Data 1 Ethernet port and the Data 2 Ethernet port, you need this information
for both connections.
you decide to use both the Data 1 Ethernet port and the Data 2 Ethernet port, you need this information
for both connections.
C660/670, C360/370, and X1060/1070 customers: Cisco recommends using one of the physical
Ethernet ports to connect directly to the Internet for the purposes of receiving inbound email through
public listeners, and using another physical Ethernet port to connect directly to your internal network for
the purposes of relaying outbound email through private listeners.
Ethernet ports to connect directly to the Internet for the purposes of receiving inbound email through
public listeners, and using another physical Ethernet port to connect directly to your internal network for
the purposes of relaying outbound email through private listeners.
C160/170 customers: Typically, the System Setup Wizard will configure only one physical Ethernet
port with one listener for both receiving inbound email and relaying outbound email.
port with one listener for both receiving inbound email and relaying outbound email.