{"id":507,"date":"2005-05-06T16:08:00","date_gmt":"2005-05-06T16:08:00","guid":{"rendered":"http:\/\/markwilson.me.uk\/blog\/2005\/05\/installing-and-verifying-configuration.htm"},"modified":"2007-07-25T22:27:09","modified_gmt":"2007-07-25T21:27:09","slug":"installing-and-verifying-configuration","status":"publish","type":"post","link":"https:\/\/www.markwilson.co.uk\/blog\/2005\/05\/installing-and-verifying-configuration.htm","title":{"rendered":"Installing and verifying the configuration of an ISA Server 2000 array"},"content":{"rendered":"<p><!--111539571952676920-->Just over a year ago, I posted a blog entry which gives a <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2004\/04\/10000-feet-view-of-microsoft-isa.htm\">10,000 feet view of Microsoft ISA Server 2000<\/a>. I haven&#8217;t done anything with ISA Server since then but over the last few days, I&#8217;ve been installing an new ISA Server 2000 array into an existing enterprise for a client.<\/p>\n<p>Nothing too complicated about that &#8211; once I had <a href=\"http:\/\/www.isaserver.org\/tutorials\/configuring_isa_server_interface_settings.html\">secured the network interfaces<\/a> and <a href=\"http:\/\/www.isaserver.org\/tutorials\/installing_isa_server_2000.html\">installed the ISA servers<\/a>, there were just a few extra settings to configure (see <a href=\"http:\/\/www.isaserver.org\/tutorials\/getting_started_with_isa_server.html\">getting started with ISA Server<\/a>) to ensure that the new array would allow outbound traffic, but I did start to doubt myself when my test clients were receiving error 10060 connection timeouts (although the logs from the upstream firewall reported that it was letting the outbound requests pass). It transpired that there was an issue with the ISP&#8217;s network, but as anyone who has ever been in that situation will know, convincing an ISP that there is a problem their end is not always easy, and I also asked two of my colleagues to check my configuration (just in case!).<\/p>\n<p>Although I installed in integrated mode (for future flexibility), my client only needed the caching functionality, so I stopped and disabled the Microsoft Firewall service. Everything seemed fine as the clients were connecting okay via HTTP, HTTPS or FTP and the upstream firewall logs reported all the client requests as coming from my proxy servers; but I wanted to be sure that the array servers were co-operating and that the cache was being populated as my test clients hit the new array.<\/p>\n<p>Understanding how the client requests are processed is straightforward &#8211; by default, ISA Server maintains a log file in %programfiles%\\Microsoft ISA Server\\ISALogs\\, which for the Microsoft Web Proxy service is named webextd<em>yyyymmdd<\/em>.txt. This file contains a whole host of information about requests received and how they were answered, including a useful field called s-object-source, which shows where the request was retrieved from (e.g. &#8220;member&#8221; for another member of the array, &#8220;inet&#8221; for the Internet or &#8220;cache&#8221; for the ISA Server cache &#8211; full details can be found in the <a href=\"http:\/\/www.microsoft.com\/resources\/documentation\/isa\/2000\/enterprise\/proddocs\/en-us\/isadocs\/m_s_c_welcome.mspx\">Microsoft Internet Security and Acceleration Server Enterprise Edition product documentation<\/a>). From looking at the ISA Server logs, I was confident that both servers were working, and resolving requests between one another using the <a href=\"http:\/\/www.microsoft.com\/resources\/documentation\/isa\/2000\/enterprise\/proddocs\/en-us\/isadocs\/m_c_c_arrayrouting.mspx\">cache array routing protocol<\/a> (CARP) but I still wanted to check that the caches on both of the ISA Servers in the array were being populated.<\/p>\n<p>Microsoft provides a useful utility with ISA Server 2000 &#8211; the ISA Server Cache Directory Tool (<code>cachedir.exe<\/code>), found on the ISA Server CD in the \\support\\tools\\troubleshooting\\ folder. Once copied to the ISA Server folder (by default, %programfiles%\\Microsoft ISA Server\\), this can be used to view the contents of the cache. I could see some entries in the cache on one server, but not the most recent requests, and running the tool on the other server returned an empty cache. Then I remembered that ISA server caches in memory first (by default 50% of available RAM), and only uses (slow) disk cache when the (fast) memory cache is full. The different results on each server were because I had restarted the Microsoft Web Proxy service on one server but not on the other. Once I restarted the Microsoft Web Proxy service on the second server, I could see all of the expected cache entries on disk as the memory cache is flushed to disk when the Web Proxy service is stopped. For reference, the ISA Server documentation gives an <a href=\"http:\/\/www.microsoft.com\/resources\/documentation\/isa\/2000\/enterprise\/proddocs\/en-us\/isadocs\/cmt_cdatfile.mspx\">explanation of the ISA cache files<\/a>.<\/p>\n<p>All in all, it has been a successful implementation, if slightly protracted by the ISP issues and my stupidity around cache contents. Now I can put those issues down to experience, but I thought posting them into the <a href=\"http:\/\/en.wikipedia.org\/wiki\/blogosphere\">blogosphere<\/a> might help out some other poor soul with an ISA server to configure in a hurry.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Just over a year ago, I posted a blog entry which gives a 10,000 feet view of Microsoft ISA Server 2000. I haven&#8217;t done anything with ISA Server since then but over the last few days, I&#8217;ve been installing an new ISA Server 2000 array into an existing enterprise for a client. Nothing too complicated &hellip; <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2005\/05\/installing-and-verifying-configuration.htm\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Installing and verifying the configuration of an ISA Server 2000 array<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[71],"class_list":["post-507","post","type-post","status-publish","format-standard","hentry","tag-isa"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Installing and verifying the configuration of an ISA Server 2000 array - markwilson.it<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.markwilson.co.uk\/blog\/2005\/05\/installing-and-verifying-configuration.htm\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Installing and verifying the configuration of an ISA Server 2000 array - markwilson.it\" \/>\n<meta property=\"og:description\" content=\"Just over a year ago, I posted a blog entry which gives a 10,000 feet view of Microsoft ISA Server 2000. 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Integrated - firewall and caching. As a firewall, ISA Server's filtering capabilities\u2026","rel":"","context":"In \"Microsoft ISA Server\"","block_context":{"text":"Microsoft ISA Server","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/isa"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1016,"url":"https:\/\/www.markwilson.co.uk\/blog\/2008\/03\/isa-server-client-software.htm","url_meta":{"origin":507,"position":1},"title":"ISA Server client software","author":"Mark Wilson","date":"Thursday 13 March 2008","format":false,"excerpt":"Fighting with ISA Server 2006, as I have been for the last few days, has given me an opportunity to refresh my knowledge of the various ISA Server clients. Actually, calling them clients is far more grandiose than is strictly necessary (only one of them involves the installation of client\u2026","rel":"","context":"In \"Microsoft ISA Server\"","block_context":{"text":"Microsoft ISA Server","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/isa"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":196,"url":"https:\/\/www.markwilson.co.uk\/blog\/2005\/07\/allowing-isa-server-2000-web-proxy.htm","url_meta":{"origin":507,"position":2},"title":"Allowing ISA Server 2000 web proxy clients to use non-standard ports for HTTPS","author":"Mark Wilson","date":"Friday 15 July 2005","format":false,"excerpt":"I spent most of today trying to get some ISA Server 2000 web proxy clients to access a web application using HTTPS on a non-standard port (4443). The issue was further complicated by the fact that the application server needed to be accessed using an upstream proxy server. Once the\u2026","rel":"","context":"In \"Microsoft ISA Server\"","block_context":{"text":"Microsoft ISA Server","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/isa"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":281,"url":"https:\/\/www.markwilson.co.uk\/blog\/2006\/05\/configuring-network-connections-for.htm","url_meta":{"origin":507,"position":3},"title":"Configuring network connections for ISA Server 2000\/2004 (aka when proxy server migrations turn bad)","author":"Mark Wilson","date":"Thursday 18 May 2006","format":false,"excerpt":"It was supposed to be so easy. The new server was already built, with the same IP addresses as the old one. 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