Website basics

Website common knowledge

Name	Description	Example
Domain name	A human-readable identifier used to identify a server or group of servers. Enter the domain name to access the website	example.com
IP address	An identifier used to uniquely serve the server on the Internet	192.168.1.1
Port	A number that distinguishes different applications on a computer network	For example, the Web service HTTP port is 80 HTTPS port is 443
Domain Name System (DNS)	Responsible for resolving domain names into corresponding IP addresses	example.com resolves to 192.168.1.1
SSL certificate	Used to establish an encrypted connection between a client and a server and to verify the server's identity.	*.example.com, mail.example.com
Access Protocol	Defines the rules for communication between clients and servers. Common access protocols include HTTP and HTTPS, used for normal communication and secure communication respectively. Using HTTPS requires deploying an SSL certificate, otherwise you can only use HTTP	https:// or http://
Access address (URL)	The full address of the website the user is accessing, including protocol, domain name or IP address, port (if not the default port) and path	https://www.example.com:7800/about
Web Server	Used to process client requests and return requested data to the client	Nginx, Apache, IIS, etc.
PHP	Used to process dynamic web pages, such as dynamic data, database queries, etc.	PHP 7.4
Node.js	Used to process dynamic web pages, such as dynamic data, database queries, etc.	Node.js 14.4
MySql	Used to store and manage data	MySql 8.0, MariaDB 10.5

Access address (URL) disassembly:

• For example: https://www.example.com:7800/about

  Name	Example
  Protocol	https:// or http://
  Domain name/IP address	www.example.com or 192.168.1.1
  Port	:7800
  Path	/about

SSL certificate

• *.example.com : is a wildcard certificate that can match multiple subdomain names, such asexample.com, www.example.com, mail.example.com, etc. can only match one level of subdomain names, excluding bb.cc.example.com