Cisco Cisco Email Security Appliance C650 Guía Del Usuario
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Cisco AsyncOS 9.5 for Email User Guide
Chapter 3 Setup and Installation
Using the System Setup Wizard
•
The netmask of the interface. The netmask must be in CIDR format. For example, use
/24
for the
255.255.255.0 subnet.
Note
IP addresses within the same subnet cannot be configured on separate physical Ethernet interfaces. See
for more detailed information on Network and IP
Address configuration.
Note
For C170 appliances, the Data 2 interface is configured first.
Specify the Default Gateway
In the next portion of the
systemsetup
command, you type the IP address of the default router (gateway)
on your network.
Enable the Web Interface
In the next portion of the
systemsetup
command, you enable the web interface for the appliance (for the
Management Ethernet interface). You can also choose to run the web interface over secure HTTP
(
(
https
). If you choose to use HTTPS, the system will use a demonstration certificate until you upload
your own certificate. For more information, see
Configure the DNS Settings
Next, you 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 your own DNS servers. 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 as many DNS servers as you need (each
server will have a priority of 0.). By default,
high-performance internal DNS resolver/cache that can query the Internet’s root servers directly, or the
system can use your own DNS servers. 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 as many DNS servers as you need (each
server will have a priority of 0.). By default,
systemsetup
prompts you to enter the addresses for your
own DNS servers.
Create a Listener
A “listener” manages inbound email processing services that will be configured on a particular IP
interface. Listeners only apply to email entering the Email Security appliance — either from your
internal systems or from the Internet. Cisco AsyncOS uses listeners to specify criteria that messages
must meet in order to be accepted and relayed to recipient hosts. You can think of a listener as an email
listener (or even a “SMTP daemon”) running for IP addresses you specified above.
interface. Listeners only apply to email entering the Email Security appliance — either from your
internal systems or from the Internet. Cisco AsyncOS uses listeners to specify criteria that messages
must meet in order to be accepted and relayed to recipient hosts. You can think of a listener as an email
listener (or even a “SMTP daemon”) running for IP addresses you specified above.
For C370, C670, X1070, C380, C680 appliances: By default, the
systemsetup
command configures
two listeners — one public and one private. (For more information on the types of listeners available,
see
see
.)
For C170 appliances: By default, the
systemsetup
command configures one public listener for both
When you define a listener, you specify the following attributes:
•
A name (nickname) created by you to refer to the listener later. For example, the listener that accepts
email from your internal systems to be delivered to the Internet may be called OutboundMail.
email from your internal systems to be delivered to the Internet may be called OutboundMail.