Symantec Security 5600 Series, Security 5400 Series,Clientless VPN 4400 Series, Administration Manual

Page: 145 / 861

145 Establishing your network
About the security gateway’s implementation of DNS
Configuring resource records for the security gateway
After you understand the way to set up your environment, you need to configure the appropriate
resource records for your configuration.
This section describes the following tasks:
■
Defining an authoritative server with a DNS authority record
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Pointing to an external name server with a DNS forwarder record
■
Identifying a host in a domain with a DNS host record
■
Defining your email server with a DNS mail server record
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Defining the server that performs lookups with a DNS name server record
■
Resolving host name requests for an outside system by creating a DNS recursion record
■
Configuring DNS for an enclave network with a DNS root server record
■
Delegating naming authority with a DNS subnet record
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Help to block spam or email forgery by configuring a DNS TXT record
Defining an authoritative server with a DNS authority record
An authority record defines the name server that is responsible for a given domain. You can make the
DNS proxy authoritative for both public and private domains.
Prerequisites
None.
To define an authoritative server with a DNS authority record
1 In the SGMI, in the left pane, under Assets, click Network .
2
In the right pane, on the DNS tab, click New > DNS Authority Record .
3 In the DNS Authority Record Properties dialog box, on the General tab, do the following:
4
Optionally, on the Description tab, type a more detailed description than what you typed in the
Caption text box.
5 Click OK .
6
Optionally, do one of the following:
■
To save your configuration now and activate later, on the toolbar, click Save .
■
To activate your configuration now, on the toolbar, click Activate .
When prompted to save your changes, click Yes .
Related information
For further information related to this topic, see the following:
■
“DNS Authority Record Properties—General tab” on page 674
Enable To enable the DNS authority record, check Enable .
Record Name Type the domain name for which you are authoritative.
Accessibility Select Public or Private.
Caption Type a brief description of the authority record.