Recorded live on September 9, 20141) Open Relay On Mac ServerOne of my clients received a call from Comcast Security requesting that they block UDP port 53 because the IP address is being used in a reflector attack. As I understand it, these are common for DDOS attempts and is sometimes referred to as an "open DNS resolver”.According to Comcast, it is not internal. The IP address is being uses as a relay- http://openresolverproject.org"Open Resolvers pose a significant threat to the global network infrastructure by answering recursive queries for hosts outside of its domain. They are utilized in DNS Amplification attacks and pose a similar threat as those from Smurf attacks commonly seen in the late 1990s."You can test your IP address here - http://www.thinkbroadband.com/tools/dnscheck.htmlhttps://blogs.akamai.com/2013/06/dns-reflection-defense.html2) Unbootable iMac Late 2010 i7http://www.macworld.com/article/1145418/unbootablemini.ht
