{"id":199,"date":"2020-11-28T15:14:09","date_gmt":"2020-11-28T20:14:09","guid":{"rendered":"https:\/\/www.alpharithms.com\/?post_type=term&p=199"},"modified":"2021-07-27T08:08:35","modified_gmt":"2021-07-27T12:08:35","slug":"port","status":"publish","type":"post","link":"https:\/\/www.alpharithms.com\/port-091415\/","title":{"rendered":"Port (networking)"},"content":{"rendered":"

Ports are end-to-end identifiers used in network communications between different end systems. On an end system, at the software level, ports are used to map network data transmissions to a specific process.<\/p>\n

Port numbers are 16-bit unsigned integer values and consist of the following three ranges:<\/p>\n

    \n
  1. Well-Known Ports: 0-1023<\/li>\n
  2. Registered Ports: 1024-49151<\/li>\n
  3. Dynamic Ports: 49152-65535<\/li>\n<\/ol>\n

    Ports are used by transportation protocols including Transmission Control Protocol (TCP)<\/a> and User Datagram Protocol (UDP) and are always associated with an IP address. For example, an HTTP request sent to a host with an IP address of 123.46.789<\/code> can be represented as 123.456.789:80<\/code> where 80<\/code> is the specified port.<\/p>\n

    Examples of well-known ports include 80<\/code> for HTTP requests, 53<\/code> for domain name service (DNS)<\/a>, and 25<\/code> for SMTP. These ports have been long-since defined and, given the early stages of the evolution of the Internet during which they were defined, there’s some really\u00a0<\/em>not-so-well-known entries. For example; port 17 is reserved for quote of the day<\/em> services.<\/p>\n

    For a complete listing of all well-known, registered, and dynamic ports visit the related Wikipedia page<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Ports are end-to-end identifiers used in network communications between different end systems. On an end system, at the software level, ports are used to map network data transmissions to a specific process. Port numbers are 16-bit unsigned integer values and consist of the following three ranges: Well-Known Ports: 0-1023 Registered Ports: 1024-49151 Dynamic Ports: 49152-65535 […]<\/p>\n","protected":false},"author":2,"featured_media":2472,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[3,260],"tags":[461,89,76,88,6],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts\/199"}],"collection":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/comments?post=199"}],"version-history":[{"count":1,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts\/199\/revisions"}],"predecessor-version":[{"id":200,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/posts\/199\/revisions\/200"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/media\/2472"}],"wp:attachment":[{"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/media?parent=199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/categories?post=199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpharithms.com\/wp-json\/wp\/v2\/tags?post=199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}