Cisco Cisco Email Security Appliance C170 사용자 가이드

For C10/100 customers, the Data 2 interface is configured first.

In the next portion of the 

systemsetup

 command, you type the IP address of the 

default router (gateway) on your network.

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 “Enabling a Certificate for HTTPS” in the 
Cisco IronPort AsyncOS for Email Advanced Configuration Guide.

Next, you configure the DNS (Domain Name Service) settings. IronPort 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, 

systemsetup

 prompts you to 

enter the addresses for your own DNS servers. 

A “listener” manages inbound email processing services that will be configured 
on a particular IP interface. Listeners only apply to email entering the IronPort 
appliance — either from your internal systems or from the Internet. IronPort 
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.