Apache can be made to listen to a particular port\/ip address using Listen directive.<\/strong><\/p>\n

Syntax :<\/em><\/strong>
\nListen [IP_Address:]Port<\/p>\n

Examples :<\/em><\/strong>
\nListen 0.0.0.0:80
\nListen 80
\nListen 127.0.0.1:80
\nListen 191.20.20.21:8000<\/p>\n

\n
• Listen directive tells the server to listen for http request on the specified port or IP address (the number of IP’s for a machine depends upon the number of Network Interface Cards) and port combinations.<\/li>\n
• If only port number is specified the server listens to the given port on all Network Interfaces.<\/li>\n
• If both IP address and port is given, the server will listen on the given port and interface.<\/li>\n
• Multiple Listen directives can be used to specify a number of addresses and ports to listen on.<\/li>\n
• The server will respond to requests from any of the listed addresses and ports.<\/li>\n<\/ul>\n

  For example, to make the server accept connections on both port 80 and port 8080, on all interfaces, use:<\/p>\n

  Listen 80
  \nListen 8080<\/p>\n

  To make the server accept connections on port 80 for one interface, and port 8080 on another, use<\/p>\n

  Listen 191.20.20.20:80
  \nListen 191.20.20.21:8000<\/p>\n

  Note :<\/em><\/strong><\/p>\n

  \n
  1. The number of IP’s for a machine depends upon the number of Network Interface Cards(NIC). If a machine has 2 NIC’s installed, then it can have 2 IP’s.<\/li>\n
  2. The IP address 0.0.0.0 means “every IP that the computer provides”.<\/li>\n
  3. The IP address 127.0.0.1 is computer’s loopback address.<\/li>\n
  4. Network IP addresses like 127.0.0.1 do not reach outside, but are re-routed by the computer’s own network adapter back to the TCP\/IP stack.<\/li>\n
  5. To get all listening tcp port one can use the command netstat -lntp, l – listening port, n – print numeric IP address, t – list only tcp socket, p – print process ID.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

     Apache can be made to listen to a particular port\/ip address using Listen directive. Syntax : Listen [IP_Address:]Port Examples : Listen 0.0.0.0:80 Listen 80 Listen 127.0.0.1:80 Listen 191.20.20.21:8000 Listen directive tells the server to listen for http request on the … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21],"tags":[22,23,25],"_links":{"self":[{"href":"http:\/\/tech.learnerandtutor.com\/wp-json\/wp\/v2\/posts\/383"}],"collection":[{"href":"http:\/\/tech.learnerandtutor.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/tech.learnerandtutor.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/tech.learnerandtutor.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/tech.learnerandtutor.com\/wp-json\/wp\/v2\/comments?post=383"}],"version-history":[{"count":28,"href":"http:\/\/tech.learnerandtutor.com\/wp-json\/wp\/v2\/posts\/383\/revisions"}],"predecessor-version":[{"id":520,"href":"http:\/\/tech.learnerandtutor.com\/wp-json\/wp\/v2\/posts\/383\/revisions\/520"}],"wp:attachment":[{"href":"http:\/\/tech.learnerandtutor.com\/wp-json\/wp\/v2\/media?parent=383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/tech.learnerandtutor.com\/wp-json\/wp\/v2\/categories?post=383"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/tech.learnerandtutor.com\/wp-json\/wp\/v2\/tags?post=383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}