Tag: 60

Mobile security is more important than ever!!!

The most used device these days is a mobile phone. Malware/Spyware/Hacking is everywhere, anytime,anywhere See: Update: Lookout re-airing on 60 Minutes

Some latest news about Mobile Security Alerts:

Hundreds of millions of devices potentially affected by first major iOS malware outbreak

Lookout discovers new trojanized adware; 20K popular apps caught in the crossfire

Soo what can you do about it:

Install Security app on your device: So i installed the free version of lookout on my phone.

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It works great so far: Testing it.

Windows 10 1607 Windows Update Change

For those of you who have started deploying Windows 10 1607, you might notice a change in the behavior of the Windows Update agent for PCs that are configured to pull updates from WSUS.  Instead of pulling the updates from WSUS, PCs may start grabbing them from peers on your network, leveraging the Delivery Optimization service for referrals to other PCs that have already obtained the content.  This change should generally help reduce the amount of network traffic being generated for both quality (monthly) updates and feature updates, offloading that traffic from the WSUS server.  It will add some additional traffic between each client PC and the Delivery Optimization service on the internet, as it has to talk to this internet-only service in order to get a list of peers.

If the Windows Update agent can’t talk to the Delivery Optimization service (due to firewall or proxy configurations), or if there are no peers able to provide the content, it will then go ahead and grab the content from the WSUS server.

There is a new Group Policy setting available if you want to disable this behavior, e.g. because you are already using BranchCache for peer-to-peer sharing.  To do this, you need to set the “Download Mode” policy under “Computer Configuration –> Administrative Templates –> Windows Components –> Delivery Optimization” to specify “Bypass” mode, which will result in the client always using BITS to transfer the content from WSUS (with BranchCache jumping in to provide the peer-to-peer capabilities through its integration with BITS):

image291

Of course to set this policy, you need the latest ADMX files, which can be downloaded from https://www.microsoft.com/en-us/download/details.aspx?id=53430 and are also included in Windows 10 1607 and Windows Server 2016.  (The “Bypass” setting wasn’t available in previous versions.)  See https://support.microsoft.com/en-us/kb/3087759 for details on how to update the Group Policy central store with these latest ADMX files, if you are using a central store.

Source: https://blogs.technet.microsoft.com/mniehaus/2016/08/08/using-wsus-with-windows-10-1607/

Cumulative Update 2 for Exchange Server 2016

.Net 4.6.1 Support

Support for .Net 4.6.1 is now available for Exchange Server 2016 and 2013 with these updates. We fully support customers upgrading servers running 4.5.2 to 4.6.1 without removing Exchange. We recommend that customers apply Exchange Server 2016 Cumulative Update 2 or Exchange Server 2013 Cumulative Update 13 before upgrading .Net FrameWork. Servers should be placed in maintenance mode during the upgrade as you would do when applying a Cumulative Update. Support for .Net 4.6.1 requires the following post release fixes for .Net as well.

Note: .Net 4.6.1 installation replaces the existing 4.5.2 installation. If you attempt to roll back the .Net 4.6.1 update, you will need to install .Net 4.5.2 again.

AutoReseed Support for BitLocker

Beginning with Exchange 2013 CU13 and Exchange 2016 CU2, the Disk Reclaimer function within AutoReseed supports BitLocker. By default, this feature is disabled. For more information on how to enable this functionality, please seeEnabling BitLocker on Exchange Servers.

SHA-2 Support for Self-Signed Certificates

The New-ExchangeCertificate cmdlet has been updated to produce a SHA-2 certificate for all self-signed certificates created by Exchange. Creating a SHA-2 certificate is the default behaviour for the cmdlet. Existing certificates will not automatically be regenerated but newly installed servers will receive SHA-2 certificates by default. Customers may opt to replace existing non-SHA2 certificates generated by previous releases as they see fit.

Migration to Modern Public Folder Resolved

The issue reported in KB3161916 has been resolved.

 

This cumulative update fixes the following issues:

This cumulative update also fixes the issues that are described in the KB 3160339 MS16-079: Security update for Microsoft Exchange: June 14, 2016 and KB 3134844 Cumulative Update 1 for Exchange Server 2016

Microsoft Knowledge Base articles.
This update also includes new daylight saving time (DST) updates for Exchange Server 2016. For more information about DST, go to Daylight Saving Time Help and Support Center.

Download: https://www.microsoft.com/en-us/download/details.aspx?id=52968

Cumulative Update 1 for Exchange Server 2016

Exchange Team released:  Cumulative Update 1 for Exchange Server 2016

Issues that the cumulative update fixes

KB 3139730 Edge Transport service crashes when you view the properties of a poison message in Exchange Server 2016
KB 3135689 A custom SAP ODI URI is removed by ActiveSync from an email message in an Exchange Server environment
KB 3135688 Preserves the web.config file for Outlook Web App when you apply a cumulative update in Exchange Server 2016
KB 3135601 Cyrillic characters are displayed as question marks when you run the “Export-PublicFolderStatistics.ps1” script in an Exchange Server 2016 environment
KB 3124242 Mailbox quota is not validated during migration to Exchange Server 2013 or Exchange Server 2016

Exchange Server 2016 Cumulative Update 1 (KB3134844), Download, UM Lang Packs

Staying up-to-date with Windows Server updates for Remote Desktop Services (RDS)

Microsoft Remote Desktop Team get customer enquiries asking which RDS updates are available for a particular Windows Server platform; or when providing support we need to verify if certain hotfixes and servicing rollups are installed on the customers’ servers. To make it easier for customers and ourselves, we regularly revise KB articles that list all of the available updates specific to Remote Desktop services for each Windows Server release:

Don’t use DHCP Option 60/66/67 when you want to use UEFI & Legacy PXE Boot with MDT

If you want to use EUFI Boot with MDT 2013 Update X.
Don’t use DHCP Option 60/66/67!!!

DC01 = Windows Server 2008 R2 SP1
DC02 = Windows Server 2012
MDT01 = Windows Server 2012 R2

UEFI Client: Dell Laptop E5450
BIOS Client: HyperV Virtual machine with Legacy network adapert

DC1; MDT01 and DHCPServer all in Subnet1.
(IP Helper is set for DHCPServer for DHCP and for DC01 & MDT01 for DHCP and BootP – I checked serveral times if everything is right here)
UEFI Client and BIOS Client in Subnet2.

Situation1 — Using no DHCP Options and WDS running (IP HELPER-ADDRESS):
UEFI Client – Boots perfectly (contacting Server MDT01)
BIOS Client – Boots perfectly (contacting Server MDT01)

Situaion2 — Using no DHCP Options and WDS just running on MDT01:
UEFI Client – Does not boot (no error information is provided)
BIOS Client – Does not boot (no Bootfilename recieved)

Situation3 — Using DHCP Options(Option 66=”IP of MDT01″ Option 67=”\x86\wdsnbp.com”) and WDS just running on MDT01:
UEFI Client – Does not boot (no error information is provided)
BIOS Client – Boots perfectly (contacting Server DP1)

Situation4 — Using DHCP Options(Option 60=”PXEClient” Option 66=”IP of MDT01″ Option 67=”\x86\wdsnbp.com”) and WDS just running on MDT01:
UEFI Client – Boots perfectly (contacting Server DP1)
BIOS Client – Does not boot (taking hours to recieve dhcp options..)

Solution:

On most switches you can configure ip helper-addresses. This is most time al ready configured for the use of DHCP.

Add the IP of the MDT server als ip helper-address:

Example:

interface Vlan100
description GEBRUIKERS VLAN
ip address 192.168.101.254 255.255.254.0 show
ip helper-address 192.168.25.6   (DC01)
ip helper-address 192.168.25.7   (DC02)
ip helper-address 192.168.25.30 (MDT01)
end

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