{"id":83,"date":"2023-10-06T08:39:39","date_gmt":"2023-10-06T08:39:39","guid":{"rendered":"https:\/\/new.hostitsmart.com\/manage\/knowledgebase\/?p=83"},"modified":"2023-10-09T05:56:12","modified_gmt":"2023-10-09T05:56:12","slug":"How-to-check-if-FTP-port-21-is-blocked","status":"publish","type":"post","link":"https:\/\/new.hostitsmart.com\/manage\/knowledgebase\/83\/How-to-check-if-FTP-port-21-is-blocked.html","title":{"rendered":"How to check if FTP port 21 is blocked"},"content":{"rendered":"
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Some local ISPs are blocking the default TCP port for FTP connection \u2013 21, which may cause connection issues. Below you may view how to check if that port is blocked in 3 operating systems:<\/span><\/p>\n

a)    Windows:<\/span>
\n In order to check if port 21 is blocked, click on the \u201cStart Menu\u201d<\/span>
\n –    In the search field type \u201ccmd\u201d<\/span>
\n –    In the newly opened command prompt enter the following command followed by \u201cEnter\u201d button:<\/span>
\n telnet YourDomain.com 21<\/span><\/p>\n

b)    Linux<\/span>
\n In order to check if port 21 is blocked, simply open your favorite shell\/terminal and type the following command followed by \u201cEnter\u201d button:<\/span>
\n telnet YourDomain.com 21<\/span><\/p>\n

c)    Apple\/Mac<\/span>
\n In order to check if port 21 is blocked, navigate to Mac HD -> \u201cApplications\u201d directory -> Utilities sub-directory. Once the terminal is opened type the following command followed by \u201cEnter\u201d:<\/span>
\n telnet YourDomain.com 21<\/span>
\n If you receive the following result, that means that port 21 is not blocked from your ISP or your Firewall:<\/span><\/p>\n

Connected to YourDomain.com.<\/span>
\n Escape character is \u2018^]\u2019.<\/span>
\n 220\u2014\u2014\u2014- Welcome to Pure-FTPd [privsep] [TLS] \u2014\u2014\u2014-<\/span>
\n 220-You are user number 1 of 50 allowed.<\/span>
\n 220-Local time is now 07:16. Server port: 21.<\/span>
\n 220-This is a private system \u2013 No anonymous login<\/span>
\n 220-IPv6 connections are also welcome on this server.<\/span>
\n 220 You will be disconnected after 15 minutes of inactivity.<\/span>
\n If you receive the massage like this, that is mean port 21 is blocked by your local ISP or your Firewall:<\/span>
\n telnet: connect to address IP_Address: Connection refused<\/span>
\n Then you should review your firewall or contact your local ISP for further assistance.<\/span><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Some local ISPs are blocking the default TCP port for FTP connection \u2013 21, which may cause connection issues. Below you may view how to check if that port is blocked in 3 operating systems: a)    Windows: In order to check if port 21 is blocked, click on the \u201cStart Menu\u201d –    In the search […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"class_list":["post-83","post","type-post","status-publish","format-standard","hentry","category-ftp-2"],"yoast_head":"\nHow to check if FTP port 21 is blocked<\/title>\n<meta name=\"description\" content=\"Having FTP connection issues? In this write-up, Get to know about checking whether the port is open or blocked. 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