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TA15-240A: Controlling Outbound DNS Access

Aug 28, 2015 / in Uncategorized

Original release date: August 28, 2015 Systems Affected Networked systems Overview US-CERT has observed an increase in Domain Name System (DNS) traffic from client systems within internal networks to publically hosted DNS servers. Direct client access to Internet DNS servers, rather than controlled access through enterprise DNS servers, can expose an organization to unnecessary security…

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