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Showing page 1 of 11 (104 total posts)
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Health Checks I perform ISA Server Health Checks for Premier Support (via Premier Field Engineering) as part of my role. I’ve seen something a few times recently that I thought it might be helpful to call out, while poking around in the Performance Monitor TCPv4 counter area. The Problem In short: Lots of TCP retransmissions per second. Like, lots. More than 1% is annoying; any more than 5% and you pretty surely have a problem. Recently, I’ve been seeing 20% . That’s right, kids, according to Perfmon’s
Posted to Blog du Tristank (Weblog) by tristank on October 14, 2009
Filed under: ISA Server, IT Pro / Sysadmin, Networking, Security, Tales from the Road, Extra Bits Of A Personal Nature
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Whenever I present a live TechNet Event , I ask my audience to raise their hands if they are a TechNet subscriber . Usually about 1/3 of the audience raises their hand. Considering that this is typically a Microsoft-friendly audience, I'm a little shocked that there aren't more hands going up. The TechNet Subscription is such a great resource for IT Pros, for these reasons: Downloadable (or delivered, if you subscribe to the disks-delivered-to-you-monthly subscription), full-version software licensed
Posted to Full of I.T. (Weblog) by KevinRemde on August 21, 2009
Filed under: TechNet, Operations Manager, Cool or Geeky, Exchange Server, Fun Stuff, Breaking News, IE, IIS, Internet Explorer, ISA Server, IT Manager, IT Pro Resources, Longhorn Server, Management, Microsoft Resources, Networking, News, Office Communications Server, Performance, Productivity, Search, Security, Service Packs and Updates, Small Business Server, SQL Server, System Center, Tech News, Training, Unified Communications, Virtualization, Webcasts, Windows Server, Windows XP, Hyper-V, Windows Vista, Test Lab, Release, Could get me fired, Office, Green IT, PowerShell, Interoperability
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As I possibly misspelled or misremembered it, the PL15ws2p.dll (possible sic) file was installed as a Winsock Layered Service Provider on a couple of boxes at a customer site. Coincidentally, these machines were Windows Server 2008 machines where we couldn’t get the Firewall Client to work properly. We found that there was a third party LSP using: NETSH WINSOCK SH CA > catalog.txt And then opening catalog.txt in notepad. The properties of the Pl15ws2p.dll indicated that it was a signed DLL from
Posted to Blog du Tristank (Weblog) by tristank on August 19, 2009
Filed under: ISA Server, IT Pro / Sysadmin, Networking, Tales from the Road, Windows Server 2008
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Yuri’s blog explains some of the detail. But there’s slightly more subtlety to it, which I’ll try to snake-oil in front of you here: Can I install ISA 2006 on 32-bit Windows Server 2008 ? No , it only runs on Windows Server 2003. Okay, so technically, it also runs on Windows 2000, but if you’re installing it like that now, you should check the calendar. Windows 2000 is old, man. Why not ISA Server 2006 on Windows 2008? Whenever I asked that, people mumbled about TCP/IP stack changes. Sounds plausible
Posted to Blog du Tristank (Weblog) by tristank on June 5, 2009
Filed under: ISA Server, IT Pro / Sysadmin, Networking, Security, Extra Bits Of A Personal Nature, Windows Server 2008
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Rambling my way to a point One of my most favourite “Favorites” (read: “he snarled”) in recent weeks has been the ISA Server Product Team’s Build Numbers post . They helpfully list the version numbers of each ISA Server, um, version, along with a link to the most recent hotfix for that version. That’s so helpful . But: In most cases, you had to use the self-service hotfix feature to get that hotfix. Which is better than calling someone, but still not quite one-click conweenyence. And there was some
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There are two major classes of Anti Virus software (yes, I know I used one word above, it’s called SEO, okay?) that can be used on an ISA Server computer: ISA-integrated antivirus scanning products Regular desktop/server antivirus products The first category is the cooler of the two, and typically involves a Web Filter and/or an Application Filter. It’s been designed to work with ISA Server, and will likely scan HTTP streams while ISA is processing them. The second category is more common – a desktop
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Of all the things I could be doing right now, blogging is the one that won. Feel special? Procrastination, but with a helpful bent. IAG SP2 is now a VHD for Hyper-V Your mission, Jim, is to make that into a song. The most interesting “wow” moment I had today was reading that IAG (Intelligent Application Gateway - that’s that Whale SSL thingo) is now available without accompanying hardware . Previously (as I understand it) IAG 2007 was only available on a hardware appliance of sorts. Now, at least
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So, we all know that ISA 2006 doesn't work on Windows Server 2008 . Massive architectural changes to the IP stack, blah blah, etc, etc. People (uh, yeah, just "people") have been asking about what's to become of ISA Server for a while: "There's no ISA 2008 announced!" they'd scream. "This surely means the end of one of the best product lines Microsoft has produced!" might have also been heard (in a somewhat muffled way). "Won't Tristan be out of a job?" one
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This question came up today (well, actually, it was about four weeks ago I started typing this, but bear with me), and it's been a little while since I've rambled about authentication protocols, so let's enjoy a nice, calm discussion on a Monday Tuesday arvo. The request was something like: In a Web Publishing scenario, can I do NTLM at the ISA Server and NTLM at the Exchange server too? No And the answer is - well, no . There's no way for the client browser to distinguish between the ISA Server
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What can we say about MaxUserPort that hasn't already been said? Not a lot, it would seem. He's a beautiful dancer, perhaps? Ahh, such gentle humour, and nary a kitten drowned anywhere. But TCP port shenanigans are fairly frequently misunderstood, so let's talk about the very basics of MaxUserPort. NB: This is all pre-Vista behaviour - applicable from NT4 through to Windows Server 2003, including all the little NT-flavoured stops on the way. MaxUserPort controls "outbound" TCP connections
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