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13-11
Cisco ASDM User Guide
OL-16647-01
Chapter 13 DHCP, DNS and WCCP Services
Dynamic DNS
Fields
• Update Methods—Lists the DDNS update methods that are configured on the security appliance.
This table includes:
–
Method Name—Display only. Shows the user-defined name for the DDNS update method.
–
Interval—Display only. Shows the time between DNS update attempts configured for the update
method.
–
Update DNS Server Records—Display only. Shows whether the method updates both the A
resource record (name to IP address) and the PTR resource record (IP address to name), or
neither record.
–
Add/Edit—Displays the Add/Edit Dynamic DNS Update Methods dialog box.
–
Delete—Removes the currently selected update method from the table.
• Dynamic DNS Interface Settings—Lists the DDNS settings for each interface configured for DDNS.
–
Interface—Display only. Shows the names of the security appliance interfaces configured for
DDNS.
–
Method Name—Display only. Shows the update methods assigned to each interface.
–
Hostname—Display only. Shows the hostname of the DDNS client.
–
Update DHCP Server Records—Display only. Shows whether the interface updates both the A
and PTR resource records or neither.
–
Add/Edit—Displays the Add/Edit Dynamic DNS Interface Settings dialog box.
–
Delete—Removes the DDNS update settings for the selected interface.
• DHCP Clients Update DNS Records—This is the global setting specifying which records the DHCP
client requests to be updated by the DHCP server. Click one of the following radio buttons:
–
Default (PTR Records) to specify that the client request PTR record updating by the server
–or–
–
Both (PTR Records and A Records) to specify that the client request both the A and PTR DNS
resource records by the server
–or–
–
None to specify that the client request no updates by the server
Modes
The following table shows the modes in which this feature is available:
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
• — • •—