Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

Entering information
on the Forwarding
IP Address window
Chapter 11: DNS (Domain Name System)
Configuring hosted DNS servers
• If you select Yes, the name server will forward queries it cannot answer
to the name servers listed in the Forward To list only. This is the default.
• If you select No, the name server forwards the query to the name
servers listed in the Forward To list. If they cannot answer the query, the
name server attempts to contact the root server.
4 In the Forward To field, specify the alternate name servers that will be used
when attempting to resolve a query. This list is consulted only if Yes is
selected in the Do Forwarding field. If multiple name servers are defined,
the name servers are consulted in the order listed until the query is
resolved. In a split DNS configuration, when modifying the unbound name
server this list will by default contain four entries for the Internet name
server (127.x.0.1, where x = the external [or Internet] burb number).
Important: If you are using a split DNS configuration, Secure Computing
strongly recommends against defining additional alternate name servers for the
unbound name server. The Internet (or external) name server should be the
only alternate name server defined in this situation.
5 To add another entry to the list of authorized name servers, click New under
the Forward To list. See “Entering information on the Forwarding IP
Address window” on page 323 for information on adding a new entry.
6 To delete a name server from the Forward To list, highlight the name server
you want to delete and click Delete.
7 [Conditional] To modify an advanced configuration setting for the name
server, click Advanced. For more information on modifying the Advanced
Server Options window, see “Entering information on the Advanced Server
Options window” on page 324.
Important: Only experienced DNS administrators should modify an advanced
configuration setting.
8 Click the Save icon in the toolbar to save your changes. To configure
additional name server information, see “About the Zones tab” on page
325.
This window is used to add an entry to the list of alternate name servers. The
alternate name servers are consulted if the primary name server cannot
resolve a query. Follow the steps below.
1 In the Forward to IP Address field, type the IP address of the alternate
name server. Use the standard quad notation when typing the IP address
(for example, 1.1.1.1).
2 Click Add to save the specified IP address to the list of alternate name
servers.
3 When you are finished adding alternate name servers, click Close.
323