Enable DNS Proxy?

Hi, I have a dlink wireless ADSL router that connects to internet and there are two computers getting connected through this. Today I found in router settings an entry called DNS Proxy Configuration. Which is already enabled. It has two fields and the first one is labeled as "Host name of the Broadband Router:" and "Broadcom" is entered. Another one called "Domain name of the LAN network:" and "Home" is entered for that.

What does this feature means? Should it be enabled? Can I consider this as a security issue if this isn't supposed to be enabled and these data entered as defaults?