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Now why, by default, your Apache Web server is listing on 80 port, that is decided by

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one Listen directive and you can search the directive in your configuration file by using the grep

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command.

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When we are going to search for Listen parameter, by default, it is showing that our Web server is running

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on 80 port.

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So we will open this configuration file and we will change that port to 90.

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Then we will reload our http and before that, or you can check the configtest whether our configuration

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file is OK, although, you should run this command before reloading the http server 

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now that mean, Listen parameter decides on which port your Web server is going to listen.

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So in our case, we have now changed the port to 90, so we will see what will happen when we are going

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test this Web site from client side, when we are going to run this command, elinks --dump.

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http, it will show that connection refused, why it is giving this error

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Because when we run this command by default, your request is sent to the 80 port.

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now our Web server is not running on 80 port, so it will display the error.

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So how you are going to access, you can access in this way elinks dump.

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You have to specify the port.

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In this way you will be able to access the website sometime purposefully.

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We change the port of our site when we do not want the other people to access or for some security

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purpose.

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We can change the port.

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generlly, You only know about that port so you can access your site according to that.

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So in our case, let us see how this Listen directive works.