{"id":13712,"date":"2023-02-10T11:47:27","date_gmt":"2023-02-10T08:47:27","guid":{"rendered":"https:\/\/unihost.com\/help\/?p=13712"},"modified":"2026-07-01T17:49:22","modified_gmt":"2026-07-01T14:49:22","slug":"how-to-disable-enable-the-slp-service-on-vmware-esxi","status":"publish","type":"post","link":"https:\/\/unihost.com\/help\/how-to-disable-enable-the-slp-service-on-vmware-esxi\/","title":{"rendered":"How to Disable\/Enable the SLP Service on VMware ESXi"},"content":{"rendered":"<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\"><strong>OpenSLP<\/strong> vulnerabilities have been disclosed that affect ESXi. These vulnerabilities and their impact on VMware products are documented in the following VMware Security Advisories (VMSAs), <!--more-->please review these before continuing as there may be considerations outside the scope of this document:<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\"><a href=\"https:\/\/www.vmware.com\/security\/advisories\/VMSA-2022-0030.html\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">VMSA-2022-0030<\/a> (CVE-2022-31699)<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\"><a href=\"https:\/\/www.vmware.com\/security\/advisories\/VMSA-2021-0014.html\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">VMSA-2021-0014<\/a> (CVE-2021-21995) &#8211; Click <a href=\"https:\/\/communities.vmware.com\/t5\/vSphere-Upgrade-Install\/Addressing-VMSA-2021-0014\/ta-p\/2857173\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">here<\/a> for further information on the advisory<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\"><a href=\"https:\/\/www.vmware.com\/security\/advisories\/VMSA-2021-0002.html\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">VMSA-2021-0002<\/a> (CVE-2021-21974)<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\"><a href=\"https:\/\/www.vmware.com\/security\/advisories\/VMSA-2020-0023.html\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">VMSA-2020-0023<\/a> (CVE-2020-3992)<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\"><a href=\"https:\/\/www.vmware.com\/security\/advisories\/VMSA-2019-0022.html\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">VMSA-2019-0022<\/a> (CVE-2019-5544)<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">The ESXi team has investigated these vulnerabilities and determined that the possibility of exploitation can be removed by performing the steps detailed in the resolution section of this article. This workaround is meant to be a temporary solution only and customers are advised to deploy the patches documented in the aforementioned VMSAs.<\/span><\/p>\n<p><span style=\"color: #ff0000; font-family: Ubuntu, sans-serif; font-size: 12pt;\">Warning:<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">This workaround is applicable ONLY to ESXi. Do not apply this workaround to other VMware products.<\/span><\/p>\n<p><span style=\"color: #ff0000; font-family: Ubuntu, sans-serif; font-size: 12pt;\">Functionality Impacts:<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">With the workaround, CIM clients which uses SLP to find CIM servers over port #427 will not be able to locate the service.<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">There is no requirement to reboot the ESXi host to disable\/enable the service<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">Solution<\/span><br \/>\n<span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">Details on the available powercli options to disable the service are documented <a href=\"https:\/\/communities.vmware.com\/t5\/vSphere-Upgrade-Install\/Powercli-Options-To-Disable-SFCB-and-SLP-Services\/ta-p\/2857164\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">here<\/a><\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">To implement the workaround perform the following steps:<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">1 Login to the ESXi hosts using an SSH session (such as putty)<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">2 Stop the SLP service on the ESXi host with this command:<\/span><\/p>\n<pre><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">\/etc\/init.d\/slpd stop<\/span><\/pre>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">Note: The SLP service can only be stopped when the service is not in use. Use the following command to view the operational state of Service Location Protocol Daemon:<\/span><\/p>\n<pre><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">esxcli system slp stats get<\/span><\/pre>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">3 Run the following command to disable the SLP service:<\/span><\/p>\n<pre><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">esxcli network firewall ruleset set -r CIMSLP -e 0<\/span><\/pre>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">To make this change persist across reboots:<\/span><\/p>\n<pre><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">chkconfig slpd off<\/span><\/pre>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">To check if the change is applied across reboots:<\/span><\/p>\n<pre><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">chkconfig --list | grep slpd\r\noutput: slpd off<\/span><\/pre>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-13714 aligncenter\" src=\"https:\/\/unihost.com\/help\/minio.php?.\/rtaImage.jpeg\" alt=\"How to Disable\/Enable the SLP Service on VMware ESXi - Image 1\" width=\"604\" height=\"199\" srcset=\"https:\/\/unihost.com\/help\/minio.php?.\/rtaImage.jpeg 604w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-300x99.jpeg 300w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-60x20.jpeg 60w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-150x49.jpeg 150w\" sizes=\"auto, (max-width: 604px) 100vw, 604px\" \/ title=\"How to Disable\/Enable the SLP Service on VMware ESXi - Image 1\"><\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">To remove the workaround perform the following steps:<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">1. Run the following command to enable the ruleset of SLP service:<\/span><\/p>\n<pre style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">esxcli network firewall ruleset set -r CIMSLP -e 1<\/span><\/pre>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">2. Run the following command to change the current startup information of slpd service:<\/span><\/p>\n<pre style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">chkconfig slpd on<\/span><\/pre>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">Run the following command to check if the change is applied after running the above step (Step 2#):<\/span><\/p>\n<pre style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">chkconfig --list | grep slpd\r\noutput: slpd on<\/span><\/pre>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">3. Run the following command to start the SLP service:<\/span><\/p>\n<pre style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">\/etc\/init.d\/slpd start<\/span><\/pre>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">4. Disable and enable the CIM agent, see <a href=\"https:\/\/kb.vmware.com\/s\/article\/1025757\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">How to disable or enable the CIM agent on the ESX\/ESXi host<\/a><\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">Later versions of ESXi report the SLPD service in the vCenter GUI<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">1. To check if you can update the SLP service via the vSphere client, login to the vCenter<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">2. Select the ESXi host and click on &#8220;Configure&#8221; &#8212; &#8220;Services&#8221;. Look for SLP in the list<\/span><br \/>\n<span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">If SLP is not listed, then use the process detailed above<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-13720 aligncenter\" src=\"https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-1.jpeg\" alt=\"How to Disable\/Enable the SLP Service on VMware ESXi - Image 2\" width=\"644\" height=\"254\" srcset=\"https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-1.jpeg 644w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-1-300x118.jpeg 300w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-1-60x24.jpeg 60w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-1-150x59.jpeg 150w\" sizes=\"auto, (max-width: 644px) 100vw, 644px\" \/ title=\"How to Disable\/Enable the SLP Service on VMware ESXi - Image 2\"><\/span><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">3. Select SLPD and click on &#8220;Stop&#8221; and then click &#8220;Ok&#8221;<\/span><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-13723 aligncenter\" src=\"https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-2.jpeg\" alt=\"How to Disable\/Enable the SLP Service on VMware ESXi - Image 3\" width=\"635\" height=\"238\" srcset=\"https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-2.jpeg 635w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-2-300x112.jpeg 300w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-2-60x22.jpeg 60w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-2-150x56.jpeg 150w\" sizes=\"auto, (max-width: 635px) 100vw, 635px\" \/ title=\"How to Disable\/Enable the SLP Service on VMware ESXi - Image 3\"><\/span><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">4. Select &#8221; Edit Startup Policy&#8221; and select &#8220;Start and stop with host&#8221;. Click Ok<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-13726 aligncenter\" src=\"https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-3.jpeg\" alt=\"How to Disable\/Enable the SLP Service on VMware ESXi - Image 4\" width=\"631\" height=\"326\" srcset=\"https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-3.jpeg 631w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-3-300x155.jpeg 300w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-3-60x31.jpeg 60w, https:\/\/unihost.com\/help\/minio.php?.\/rtaImage-3-150x77.jpeg 150w\" sizes=\"auto, (max-width: 631px) 100vw, 631px\" \/ title=\"How to Disable\/Enable the SLP Service on VMware ESXi - Image 4\"><\/span><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">5. Reverse the steps above to re-enable the service<\/span><\/p>\n<p><span style=\"font-family: Ubuntu, sans-serif; font-size: 12pt;\">If you need help with server administration, you can order the <a href=\"https:\/\/unihost.com\/management\/\">Server Administration<\/a> service from Unihost<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>OpenSLP vulnerabilities have been disclosed that affect ESXi. These vulnerabilities and their impact on VMware products are documented in the following VMware Security Advisories (VMSAs),<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[158],"tags":[520],"class_list":["post-13712","post","type-post","status-publish","format-standard","hentry","category-dedicated-servers","tag-dedicated-servers"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Disable\/Enable the SLP Service on VMware ESXi -<\/title>\n<meta name=\"description\" content=\"These vulnerabilities and their impact on VMware products are documented in the following VMware Security Advisories\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/unihost.com\/help\/how-to-disable-enable-the-slp-service-on-vmware-esxi\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Disable\/Enable the SLP Service on VMware ESXi -\" \/>\n<meta property=\"og:description\" content=\"These vulnerabilities and their impact on VMware products are documented in the following VMware Security Advisories\" \/>\n<meta property=\"og:url\" content=\"https:\/\/unihost.com\/help\/how-to-disable-enable-the-slp-service-on-vmware-esxi\/\" \/>\n<meta property=\"og:site_name\" content=\"Unihost.FAQ\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/unihost\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-02-10T08:47:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-01T14:49:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/unihost.com\/help\/wp-content\/uploads\/rtaImage.jpeg\" \/>\n<meta name=\"author\" content=\"Unihost Support\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@unihost\" \/>\n<meta name=\"twitter:site\" content=\"@unihost\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Unihost Support\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/unihost.com\\\/help\\\/how-to-disable-enable-the-slp-service-on-vmware-esxi\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/unihost.com\\\/help\\\/how-to-disable-enable-the-slp-service-on-vmware-esxi\\\/\"},\"author\":{\"name\":\"Unihost Support\",\"@id\":\"https:\\\/\\\/unihost.com\\\/help\\\/#\\\/schema\\\/person\\\/bb5ae95f38577c920e6a7507888b715a\"},\"headline\":\"How to Disable\\\/Enable the SLP Service on VMware ESXi\",\"datePublished\":\"2023-02-10T08:47:27+00:00\",\"dateModified\":\"2026-07-01T14:49:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/unihost.com\\\/help\\\/how-to-disable-enable-the-slp-service-on-vmware-esxi\\\/\"},\"wordCount\":467,\"publisher\":{\"@id\":\"https:\\\/\\\/unihost.com\\\/help\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/unihost.com\\\/help\\\/how-to-disable-enable-the-slp-service-on-vmware-esxi\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/unihost.com\\\/help\\\/wp-content\\\/uploads\\\/rtaImage.jpeg\",\"keywords\":[\"dedicated servers\"],\"articleSection\":[\"02. 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