Tag Archives: exchange 2013

Asymmetric routing, multiple default gateways on Linux with HAProxy

Why we may need multiple default gateways? Nowadays, Application Delivery controllers (aka Load-Balancers) become the entry point for all the applications hosted in a company or administration. That said, many different type of population could access the applications:   * internal … Continue reading

Posted in Aloha, architecture, HAProxy, layer7 | Tagged , , , , , | 2 Comments

Mitigating the SSL Beast attack using the ALOHA Load-Balancer / HAProxy

The beast attack on SSL isn’t new, but we have not yet published an article to explain how to mitigate it with the ALOHA or HAProxy. First of all, to mitigate this attack, you must use the Load-Balancer as the … Continue reading

Posted in Aloha, exchange 2010, Exchange 2013, HAProxy, security, ssl | Tagged , , , | 2 Comments

Microsoft Exchange 2013 architectures

Introduction to Microsoft Exchange 2013 There are 2 types of server in Exchange 2013:   * Mailbox server   * Client Access server Definitions from Microsoft Technet website:   * The Client Access server provides authentication, limited redirection, and proxy services, and offers … Continue reading

Posted in Aloha, architecture, exchange, Exchange 2013, layer4, layer7 | Tagged , , , , , , | 5 Comments

Microsoft Exchange 2013 load-balancing with HAProxy

Introduction to Microsoft Exchange server 2013 Note: I’ll introduce exchange from a Load-Balancing point of view. For a detailed information about exchange history and new features, please read the pages linked in the Related links at the bottom of this … Continue reading

Posted in exchange, Exchange 2013 | Tagged , , , , , | 7 Comments

Exchange Outlook Web Access (OWA) Cross-Site Request Forgery (CSRF) protection

Outlook Web Access Outlook Web Access is the webmail embedded in Exchange mail server. It is used by users outside the office to get access to their emails. Unfortunately, some version of OWA are affected by a CSRF attack. This … Continue reading

Posted in Aloha, exchange, layer7, security | Tagged , , , | 2 Comments