Cisco Cisco Email Security Appliance C170 Betriebsanweisung

This section describes the features used to configure the network operation of the appliance. These 
features give you direct access to the hostname, DNS, and routing settings that you configured via the 
System Setup Wizard (or the 

systemsetup

 command) in 

The following features are described:

sethostname

DNS Configuration (GUI and via the 

dnsconfig

 command)

Routing Configuration (GUI and via the 

routeconfig

 and 

setgateway

 commands

)

dnsflush

Password

Network Access

Login Banner

The hostname is used to identify the system. You must enter a fully-qualified hostname. To change the 
hostname:

On the web interface, click Network> IP Interfaces, click the Management and in the 
Hostname, change the hostname.

On the CLI, use the s

ethostname

 command. 

The new hostname does not take effect until you commit changes.

You can configure the DNS settings for your appliance through the DNS page on the Network menu of 
the GUI, or via the d

nsconfig

 command. 

You can configure the following settings:

whether to use the Internet’s DNS servers or your own, and which specific server(s) to use

which interface to use for DNS traffic

the number of seconds to wait before timing out a reverse DNS lookup

clear DNS cache

AsyncOS can use the Internet root DNS servers, your own DNS servers, or the Internet root DNS servers 
and authoritative DNS servers you specify. When using the Internet root servers, you may specify 
alternate servers to use for specific domains. Since an alternate DNS server applies to a single domain, 
it must be authoritative (provide definitive DNS records) for that domain.