Which GSS “source access list” is used to allow access to GSS by clients when GSS is being used as the DNS?
A. Client IP
B. Proxy IP
C. Client and proxy IP
D. Neither client nor proxy IP
Correct Answer: A
Explanation/Reference:
Explanation:
A source address refers to the source of DNS queries received by the GSS. Source addresses typically point to an IP address or block of addresses that represent client D-proxies from which the queries originate.
Using a DNS rule, the GSS matches source addresses to domains hosted by the GSS using one of a number of different balance methods.
Source addresses are taken from the D-proxy (the local name server) to which a requesting client issued a recursive request. The D-proxy sends the client queries to multiple name servers, eventually querying the GSS, which matches the D-proxy source address against its list of configured source addresses.
DNS queries received by the GSS do not have to match a specific D-proxy to be routed; default routing can be performed on requests that do not emanate from a known source address. By default, the GSS provides a fail-safe “Anywhere” source address list. Incoming queries that do not match your configured source address lists are matched to this list.
Reference: http://www.cisco.com/c/en/us/td/docs/app_ntwk_services/data_center_app_services/gss4400series/v2-0/configuration/gui/gslb/guide/gui_gslb/Intro.html (sources addresses and source address lists)
Explanation/Reference:
Explanation:
A source address refers to the source of DNS queries received by the GSS. Source addresses typically point to an IP address or block of addresses that represent client D-proxies from which the queries originate.
Using a DNS rule, the GSS matches source addresses to domains hosted by the GSS using one of a number of different balance methods.
Source addresses are taken from the D-proxy (the local name server) to which a requesting client issued a recursive request. The D-proxy sends the client queries to multiple name servers, eventually querying the GSS, which matches the D-proxy source address against its list of configured source addresses.
DNS queries received by the GSS do not have to match a specific D-proxy to be routed; default routing can be performed on requests that do not emanate from a known source address. By default, the GSS provides a fail-safe “Anywhere” source address list. Incoming queries that do not match your configured source address lists are matched to this list.
Reference: http://www.cisco.com/c/en/us/td/docs/app_ntwk_services/data_center_app_services/gss4400series/v2-0/configuration/gui/gslb/guide/gui_gslb/Intro.html (sources addresses and source address lists)