Cisco Cisco Email Security Appliance X1050 Guía Del Usuario
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AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
Chapter 33 System Administration
Changing Network Settings
The sethostname Command
For the hostname change to take effect, you must enter the
commit
command. After you have successfully
committed the hostname change, the new name appears in the CLI prompt:
The new hostname appears in the prompt as follows:
mail3.example.com>
Configuring Domain Name System (DNS) Settings
You can configure the DNS settings for your appliance through the DNS page on the Network menu of
the GUI, or via the d
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
Specifying DNS Servers
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.
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.
oldname.example.com> sethostname
[oldname.example.com]> mail3.example.com
oldname.example.com>
oldname.example.com> commit
Please enter some comments describing your changes:
[]> Changed System Hostname
Do you want to save the current configuration for rollback? [Y]> n
Changes committed: Fri May 23 11:42:12 2014 GMT