Microsoft issues patch for IE zero-day security vulnerability

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Microsoft has released an update patch to fix the zero-day security vulnerability affecting Internet Explorer versions 6 through 11 .  The recently discovered IE vulnerability allowed nefarious parties to execute code with elevated permissions and potentially other very bad things. The update patch is available via automatic update, or if you don't want to wait for automatic updates to run you can manually launch windows update from control panel, or in the case of Windows XP browse to https://update.microsoft.com There Read more [...]

Cisco DPC3939 allow inbound traffic

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Comcast is now replacing many of the failed Netgear routers with the Cisco DPC3939.  The DPC3939 can be difficult to work with in terms of enabling inbound traffic.  Firewalls are of course dependent upon inbound traffic flow in order to perform NAT and traffic filtering functions. In order to allow inbound traffic the following checkbox must be checked: Advanced > Disable all rules and allow all inbound traffic through Note: you may also need to disable the firewall in the Cisco Read more [...]

Exchange 2013 DAG Latency requirements and considerations

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According to Microsoft, Exchange DAG replication latency should be below 500ms roundtrip. This DAG latency requirement has limited my deployment options in the past to very specific WAN scenarios like MPLS, Point to Point Wifi, etc.  Many customers wishing to deploy a DAG across a VPN didn’t meet the latency requirements.  In other words, I haven't implemented an Exchange DAG that is replicating across the internet. From Microsoft: "Regardless of their geographic location relative to other Read more [...]

Summary of Outlook Autodiscover Order

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Issue: You would like a better understanding of the order in which Outlook goes through the Autodiscover process SCP lookup: Outlook will query Active Directory for Autodiscover information.  If that fails, Outlook begins it's "non-domain connected" logic, and will go in order down this list HTTPS root domain query: Outlook, if not domain joined, queries using the primary email address domain (right hand side of the email address). Using this domain as an example, it will search for https://enterpriseit.co/autodiscover/autodiscover.xml HTTPS Read more [...]