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User Guide for Cisco Security Manager 4.4
OL-28826-01
Chapter 51 Configuring Server Access Settings on Firewall Devices
DNS Page
Add DNS Server Dialog Box
Use the Add DNS Server dialog box to add a DNS server to the DNS servers list in the Add DNS Server
Group or Edit DNS Server Group dialog boxes.
Navigation Path
You can access the Add DNS Server dialog box from the Add DNS Server Group or Edit DNS Server
Group dialog boxes. For more information about these dialog boxes, see Add DNS Server Group Dialog
Box, page 51-15.
Related Topics
• DNS Page, page 51-13
Field Reference
DNS Servers Lists the DNS servers in this group. You can specify up to six servers
to which DNS requests can be forwarded. The security appliance tries
each DNS server in top-to-bottom order until it receives a response.
Note You also must specify at least one interface on which DNS is
enabled in the DNS Lookup section of the DNS Page,
page 51-13.
Use the buttons next to this list to manage the entries; from the top
down, they are:
• Add a DNS server to the list; opens the Add DNS Server Dialog
Box, page 51-16.
• Delete the currently selected DNS server entry from the list.
• Move the currently selected entry up one row.
• Move the currently selected entry down one row.
Timeout Specify the number of seconds, from 1 to 30, to wait before trying the
next DNS server; the default is 2 seconds. Each time the security device
retries the list of servers, this timeout doubles.
Retries Specify the number of times, from 0 to 10, to retry the list of DNS
servers when the security device does not receive a response.
Domain Name Optionally, specify a valid DNS domain name for the server; for
example, dnsexample.com.
Table 51-14 Add/Edit DNS Server Group Dialog Boxes (Continued)
Element Description
Table 51-15 Add DNS Server Dialog Box
Element Description
IP Address Type The type of IP address assigned to the DNS server, IPv4 or IPv6. This
is not the type of addresses the server can resolve, but instead relates to
the IP address assigned to the server itself.
IPv6 is supported on ASA 8.4(2+) only.