Cisco Cisco Packet Data Interworking Function (PDIF) Guía Para Resolver Problemas
HA Proxy DNS Intercept
▀ Configuring Proxy DNS Intercept
▄ Cisco ASR 5000 Series Enhanced Feature Configuration Guide
OL-22983-01
Configuring Proxy DNS Intercept
To configure the Proxy DNS Intercept feature:
Step 1
Enable the Proxy DNS Intercept feature in the subscriber destination context as described in the
Step 2
Create the list of rules used to specify how an intercepted DNS packet is to be processed as described in the
Step 3
Associate a system-configured subscriber with a configured Proxy DNS rules list as described in the
Step 4
Save your configuration as described in the Saving Your Configuration chapter.
Important:
Commands used in the configuration examples in this section provide base functionality to the extent
that the most common or likely commands and/or keyword options are presented. In many cases, other optional
commands and/or keyword options are available. Refer to the Command Line Interface Reference for complete
information regarding all commands.
commands and/or keyword options are available. Refer to the Command Line Interface Reference for complete
information regarding all commands.
Enabling Proxy DNS Intercept in the Destination Context
Use the following example to enable the Proxy DNS Intercept feature in the subscriber destination context:
Notes:
The
command must be entered in the destination
context for the subscriber. If there are multiple destination contexts for different subscribers, the command
must be entered in each context. This feature uses UDP port 53.
must be entered in each context. This feature uses UDP port 53.
must be the interface in the current context where all redirected DNS requests will be sent.
Creating the Proxy DNS Intercept Rules List
Use the following example to create the list of rules in the AAA context, which is used to specify how an intercepted
DNS packet is to be processed:
DNS packet is to be processed: