Tag Archives: Exchange

Exchange

Kemp Edge Security Pack for Exchange 2013

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Now that Microsoft TMG2010 no longer is available it’s time to look for other alternatives. Reverse proxy solutions is not a problem, there are various solutions for this. Microsoft itself has the ARR (Application Request Routing) on top of IIS available. This can perform reverse proxy, but for load balancing you still have to rely on NLB. Another drawback is that ARR does not do pre-authentication.

With the new software version for the Kemp LoadMaster series (V7) it is now possible to do reverse proxy and pre-authentication out of the box. The new module is called ESP or Edge Security Pack. The idea is the same as before, clients hit the Kemp LoadMasters and the requests are distributed across multiple Exchange Client Access Servers. But before the requests are sent to the Client Access Servers they are authenticated. Kemp uses an authentication provider for this, in a normal scenario this would an Active Directory Domain Controller.

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The advantage of pre-authentication is evident. In case of a (brute force) attack the CAS servers are only bothered with normal authentication traffic, the attacks are handled by the Kemp and these never reach the CAS servers. ESP is specifically designed to handle this kind of traffic. With ESP the CAS servers only handle normal user authentication.

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Exchange

Migrationwiz – Exchange migration in the cloud

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When migrating one Exchange organization to another organization you have to do quite some work. The traditional methods include a lot of scripting, or a 3rd party tool like Quest or BinaryTree to migrate one Exchange environment to another.

Migrationwiz is a product that can perform the migration from the cloud, they offer E-mail migrations as a service. This migration can be from any messaging platform to any messaging platform, but for this blog I’ll focus on a migration from one Exchange platform to another Exchange platform (in different datacenters).

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Exchange

Autodiscover in Exchange part III

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Autodiscover is a standard feature in Exchange Server 2007 and higher that’s being used by Outlook 2007 and higher. Looking at the number of questions I get regarding autodiscover I’ve written a number of blogposts that will look into Autodiscover in depth:

In Part I I’ve explained how domain joined clients work with autodiscover information that’s stored in Active Directory. In Part II I’ve explained how the same (domain joined) client behaves on an external network like the Internet.

Both posts work with the self-signed certificate, but it’s much better (and recommended!) to use a 3rd party certificate or a certificate of an internal PKI environment. Continue reading Autodiscover in Exchange part III →

Exchange

Autodiscover in Exchange

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Autodiscover is a feature in Exchange Server 2010 and higher which is being used by Outlook 2007 or higher. Due to the number of question I get on Autodiscover I’ve created a number of blog posts that explain the Autodiscover functionality:

Introduction

Autodiscover is a very useful feature in Exchange 2007 and Exchange 2010 that makes it possible to automatically create Outlook 2007 and Outlook 2010 profiles.

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