yesterday\u2019s column<\/B><\/A> we tackled the somewhat complicated issue of trying to associate an IP address with a network connection. Because yesterday\u2019s column was hard, the unwritten laws for being a Scripting Guy pretty much compel us to take an easy question today.<\/P>\nSo how easy could it be to determine the name of the domain controller that authenticated the logged-on user? As easy as three lines of code:<\/P>
Set objDomain = GetObject(“LDAP:\/\/rootDSE”)\nstrDC = objDomain.Get(“dnsHostName”)\nWscript.Echo “Authenticating domain controller: ” & strDC\n<\/PRE>\nNo, you\u2019re not dreaming; this really does<\/I> take just three lines of code. (And even if you were<\/I> dreaming, well, do you really want to admit that you dream about scripting?) We begin by binding to rootDSE<\/B>, which represents the root of the Active Directory service on a domain controller. The rootDSE object exists to provide information about a domain and a domain controller; in fact, one piece of information rootDSE provides is the value of the dnsHostName<\/B> property. <\/P>\n
That might not be the most intuitive property name in the world, but dnsHostName is the name of the authenticating domain controller. Consequently we use the Get<\/B> method to retrieve the value of the dnsHostName attribute and store that value in a variable named strDC. Echo back the value of strDC and we\u2019ve determined the name of the domain controller that authenticated the user.<\/P>\n
And now, having presented our three-line script, our work for today is done. If you need anything we\u2019ll be at home watching the Jerry Springer Show<\/I><\/P><\/p>\n","protected":false},"excerpt":{"rendered":"
Hey, Scripting Guy! In my logon script how can I determine the name of the domain controller that authenticated the user?— CK Hey, CK. You know, one of the unwritten rules for being a Scripting Guy is that you should never do anything hard more than once a week. (Why is this an unwritten rule? […]<\/p>\n","protected":false},"author":595,"featured_media":87096,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[7,168,3,20,5],"class_list":["post-69593","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-scripting","tag-active-directory","tag-domains","tag-scripting-guy","tag-user-accounts","tag-vbscript"],"acf":[],"blog_post_summary":"
Hey, Scripting Guy! In my logon script how can I determine the name of the domain controller that authenticated the user?— CK Hey, CK. You know, one of the unwritten rules for being a Scripting Guy is that you should never do anything hard more than once a week. (Why is this an unwritten rule? […]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts\/69593","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/users\/595"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/comments?post=69593"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/posts\/69593\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/media\/87096"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/media?parent=69593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/categories?post=69593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/scripting\/wp-json\/wp\/v2\/tags?post=69593"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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