Archive for ISA
Unable to use Out Of Office or AutoDiscover
Posted by: | CommentsWe had an interesting issue the other day. After an upgrade to Exchange 2007 and Office 2007 users reported that they were unable to create an Out Of Office message. When attempting to do so, Outlook would claim that the Exchange server was unavailable. It was a real mystery since the Exchange server was available; they were sending and receiving email just fine. A further clue presented itself when we found that this issue only effected users on the Terminal Server. Users working from Desktop computers did not experience this problem.
During our investigation of the problem we noticed that on the terminal server Outlook was also unable to resolve the autodiscover record while on the desktops they were. We weren’t sure of the link between these two clues but pushed forward to resolve the autodiscover issue. We verified that all of the autodiscover records were correct.
We resorted to Internet research and found 1 conversation thread where someone noted that autodiscover was unable to resolve when you have a proxy server and the browser is not configured to exempt the internal domain from the proxy. This was indeed the problem. This business did run a proxy server. The browser in the terminal server did not have the exemption for the local domain, while the desktop browsers did because they were being autoconfigured by a local firewall client. Once this entry was made, Out Of Office and Autodiscover worked.
So, the solution to why users are unable to use Out Of Office in Outlook 2007 is that the Internal domain is not listed in Internet Explorer as exempt from proxy.
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ISA 2006 in front of SBS 2008 Whitepaper Available
Posted by: | CommentsThird Tier partner Eriq Neale wrote a whitepaper for Microsoft on how to configure ISA 2006 to run in front of SBS 2008, and that document is now available for download from microsoft.com. If you received ISA 2006 as part of the SBS 2003 Premium Software Assurance make good offer, or if you are wanting to deploy ISA 2006 independently of that offer, this whitepaper will walk you through the process of installing and configuring the ISA 2006 server to publish and protect the SBS 2008 network.
Next Version of ISA
Posted by: | CommentsAmy has been quoted in an article for SearchMidMarketSecurity.com on the next version of ISA, Threat Management Gateway.
The changes in TMG compared with the current ISA Server 2006 are perhaps the most significant since ISA Server 2000 supplanted Proxy Server, adding a full-fledged application firewall, with stateful packet inspection and VPN.
"It’s another sea change, like Proxy Server to ISA Server" said Babinchak. "It’s more of a total threat management product."
You can read the full article on the searchmidmarketsecurity website.
ISA or Calyptix?
Posted by: | CommentsAs migrations to SBS 2008 start to pick up steam, consultants that were using ISA as part of SBS 2003 Premium are wondering how the Calyptix Access Enforcer compares. Let’s make one thing clear right off the bat; nothing compares to ISA except ISA. ISA has a rating of 4+. That’s as good as it gets. But the Calyptix Access Enforcer has some features that ISA users have come to depend upon and it’s built on OpenBSD by a company whose focus is software development. It’s also a unified threat management product while ISA 2004 is a traditional firewall. Really they are two completely different things.
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So who wrote this blog and what do they do for a living anyway?
We’re Third Tier. We provide advanced Third Tier support for IT Professionals.
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