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{"id":2083,"date":"2019-11-25T12:42:58","date_gmt":"2019-11-25T12:42:58","guid":{"rendered":"https:\/\/support.aklwebhost.com\/?post_type=manual_kb&p=2083"},"modified":"2019-11-25T12:42:58","modified_gmt":"2019-11-25T12:42:58","slug":"how-to-check-if-ftp-port-21-is-blocked","status":"publish","type":"manual_kb","link":"https:\/\/support.aklwebhost.com\/knowledgebase\/how-to-check-if-ftp-port-21-is-blocked\/","title":{"rendered":"How to check if FTP port 21 is blocked"},"content":{"rendered":"

Sometimes you may find that\u00a0port 21<\/strong>\u00a0has been blocked by\u00a0your ISP<\/strong>, or by your\u00a0company’s firewall<\/strong>. This will prevent you connecting to the\u00a0FTP server<\/strong>\u00a0to upload and download your files.<\/p>\n

You can check if this is the cause of your connectivity problems in the following way:<\/p>\n

Windows<\/h3>\n

Press Start > Run<\/strong><\/p>\n

This will bring up a small window. In that window, type\u00a0cmd<\/span>. This will bring up a black window, which is called the DOS Prompt. Enter the following and press enter:<\/p>\n

telnet mydomain.com 21<\/strong><\/p>\n

Replace\u00a0mydomain.com<\/strong>\u00a0with your own domain name.<\/p>\n

Apple Mac<\/h3>\n

In your Mac Applications directory, you will find a sub folder called Utilities. This will contain an application called Terminal. Open this application.\u00a0Enter the following and press enter:<\/p>\n

telnet mydomain.com 21<\/strong><\/p>\n

Replace mydomain.com with your own domain name.<\/p>\n

The Results<\/h3>\n

If the\u00a0connection has been successful<\/strong>, you should see the following:<\/p>\n

220---------- Welcome to Pure-FTPd [TLS] ----------<\/em><\/code>
\n220-You are user number 5 of 50 allowed.<\/em><\/code>
\n220-<<<\/em><\/code>
\n220-#########################################################<\/em><\/code>
\n220-Please upload your web files to the public_html directory.<\/em><\/code>
\n220-Note that letters are case sensitive.<\/em><\/code>
\n220-#########################################################<\/em><\/code>
\n220->><\/em><\/code>
\n220-Local time is now 03:35. Server port: 21.<\/em><\/code>
\n220-This is a private system - No anonymous login<\/em><\/code>
\n220-IPv6 connections are also welcome on this server.<\/em><\/code>
\n220 You will be disconnected after 15 minutes of inactivity.<\/em><\/code><\/p>\n

If you see anything other than this then your connection has not been successful and you should\u00a0contact your ISP<\/strong>, or potentially, if you are in an office, your\u00a0network administrator<\/strong>, to ask them to\u00a0unblock port 21<\/strong>.<\/p>\n

If you still have any further problems don’t hesitate to\u00a0contact our support<\/strong><\/a><\/span>\u00a0and we will be happy to help!<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","manualknowledgebasecat":[90],"manual_kb_tag":[92],"_links":{"self":[{"href":"https:\/\/support.aklwebhost.com\/wp-json\/wp\/v2\/manual_kb\/2083"}],"collection":[{"href":"https:\/\/support.aklwebhost.com\/wp-json\/wp\/v2\/manual_kb"}],"about":[{"href":"https:\/\/support.aklwebhost.com\/wp-json\/wp\/v2\/types\/manual_kb"}],"author":[{"embeddable":true,"href":"https:\/\/support.aklwebhost.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/support.aklwebhost.com\/wp-json\/wp\/v2\/comments?post=2083"}],"version-history":[{"count":1,"href":"https:\/\/support.aklwebhost.com\/wp-json\/wp\/v2\/manual_kb\/2083\/revisions"}],"predecessor-version":[{"id":2084,"href":"https:\/\/support.aklwebhost.com\/wp-json\/wp\/v2\/manual_kb\/2083\/revisions\/2084"}],"wp:attachment":[{"href":"https:\/\/support.aklwebhost.com\/wp-json\/wp\/v2\/media?parent=2083"}],"wp:term":[{"taxonomy":"manualknowledgebasecat","embeddable":true,"href":"https:\/\/support.aklwebhost.com\/wp-json\/wp\/v2\/manualknowledgebasecat?post=2083"},{"taxonomy":"manual_kb_tag","embeddable":true,"href":"https:\/\/support.aklwebhost.com\/wp-json\/wp\/v2\/manual_kb_tag?post=2083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}