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What is the default DNS cache expiration time in the Bluecoat ProxySG appliance and How can I change it?

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http://www.debianadmin.com – Q: What is the default DNS cache expiration time? A: Whether or not a DNS query cached is based on the response from the respective DNS server(s): If DNS responds that the query is non-cacheable, the cache time-to-live (TTL) is set to 0. If DNS responds that the query is cacheable, the cache TTL is set to a value in seconds. Example Blue Coat ProxySG: Blue Coat SG210 Series#test dns www.stgeorge.com.au Performing DNS lookup for: www.stgeorge.com.au Sending A query for www.stgeorge.com.au to 10.105.12.36. DNS Response data: Official Host Name: www.stgeorge.com.au Resolved Addresses (Distributions)