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Tiny Deathstars of Foulness

Exchange Online and Exchange 2010-2016 can block a device from accessing ActiveSync using a policy. To do so, first grab a list of all operating systems you’d like to block. To do so, first check which ones are out there using the Get-ActiveSyncDevice command, and looking at devicetype, deviceos, and deviceuseragent. This can be found using the following command:

Get-ActiveSyncDevice | select devicetype,deviceos,deviceuseragent

The command will show each of the operating systems that have accessed the server, including the user agent. You can block access based on each of these. In the following command, we’ll block one that our server found that’s now out of date:

New-ActiveSyncDeviceAccessRule -Characteristic DeviceOS -QueryString "iOS 8.1 12A369" -AccessLevel Block

To see all blocked devices, use

Get-ActiveSyncDeviceAccessRule | where {$_.AccessLevel -eq 'Block'}

If you mistakenly block a device, remove the block by copying it into your clipboard and then pasting into a Remove-ActiveSyncDeviceAccessRule commandlet:

Remove-ActiveSyncDeviceAccessRule -Characteristic DeviceOS -QueryString "iOS 8.1 12A369" -AccessLevel Block

Or to remove all the policies:

Get-ActiveSyncDeviceAccessRule | Remove-ActiveSyncDeviceAccessRule

May 25th, 2016

Posted In: iPhone, Microsoft Exchange Server

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Qlogic fibre channel switches are about the most common I see in Xsan environments. A common frustration when managing a Qlogic switch is that the Java runtime used to manage the switch is blocked from most OS X systems by default. But it’s pretty easy to get into them with a couple of minor adjustments.

To get started, first download and install the latest Java from here. Once installed, open System Preferences on your Mac and then open the Java Preferences. Here, click on the Security tab.

Screen Shot 2014-03-17 at 10.43.11 AM

Click Edit Site List… In the pop-up, click Add and enter http:// followed by the name or IP address of your switch.

Screen Shot 2014-03-17 at 10.42.45 AM

Click on OK to commit your changes. Then access the switch address from Firefox (what I use for these) or whatever browser you prefer. Because the switch has a self-signed certificate, you’ll be prompted with a ┬ásecurity warning. Here, click the checkbox for “I accept the risk and want to run this application” and then click on the Run button.

Screen Shot 2014-03-17 at 10.40.21 AM

You’ll then be prompted by another Security Warning dialog. This one is indicating that the Java applet is potentially unsafe. Because we somewhat trust Qlogic, click Don’t Block. You’ll have to click this one every time you access the switch.

Screen Shot 2014-03-17 at 10.43.48 AM

The switch interface then opens and you can manage your switch as needed.

Screen Shot 2014-03-17 at 10.45.20 AM

Enjoy.

March 24th, 2014

Posted In: Xsan

Tags: , , , , , , ,