{"id":302,"date":"2018-02-04T12:39:15","date_gmt":"2018-02-04T10:39:15","guid":{"rendered":"http:\/\/catyellow.net\/blog\/?p=302"},"modified":"2018-06-02T21:06:46","modified_gmt":"2018-06-02T19:06:46","slug":"how-to-check-if-udp-port-is-open-on-remote-host","status":"publish","type":"post","link":"https:\/\/catyellow.net\/blog\/?p=302","title":{"rendered":"How to check if UDP port is opened on remote host"},"content":{"rendered":"<pre class=\"brush: bash; title: ; notranslate\" title=\"\">nmap -sU -p PORT IP<\/pre>\n<p>For example <a href=\"http:\/\/galeracluster.com\/documentation-webpages\/firewallsettings.html\" rel=\"noopener\" target=\"_blank\">Galera requires 4567\/udp port opened<\/a> and I needed to check if it&#8217;s opened on one of the nodes.<\/p>\n<pre class=\"brush: bash; title: ; notranslate\" title=\"\">root@host:~# nmap -sU -p 4567 10.10.20.20\r\n\r\nStarting Nmap 7.01 ( https:\/\/nmap.org ) at 2018-02-04 10:04 UTC\r\nNmap scan report for 10.10.20.20\r\nHost is up (0.00043s latency).\r\nPORT     STATE  SERVICE\r\n4567\/udp closed unknown\r\nMAC Address: AB:AB:AB:AB:AB:AB (Unknown)\r\n\r\nNmap done: 1 IP address (1 host up) scanned in 0.52 seconds<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>For example Galera requires 4567\/udp port opened and I needed to check if it&#8217;s opened on one of the nodes.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[65],"_links":{"self":[{"href":"https:\/\/catyellow.net\/blog\/index.php?rest_route=\/wp\/v2\/posts\/302"}],"collection":[{"href":"https:\/\/catyellow.net\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/catyellow.net\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/catyellow.net\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/catyellow.net\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=302"}],"version-history":[{"count":7,"href":"https:\/\/catyellow.net\/blog\/index.php?rest_route=\/wp\/v2\/posts\/302\/revisions"}],"predecessor-version":[{"id":328,"href":"https:\/\/catyellow.net\/blog\/index.php?rest_route=\/wp\/v2\/posts\/302\/revisions\/328"}],"wp:attachment":[{"href":"https:\/\/catyellow.net\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/catyellow.net\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=302"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/catyellow.net\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}