JavaScript Web Concepts, Part3 - Default Ports

What are different default ports for different schema?

Different schemes (protocols) use specific default ports that allow clients and servers to communicate over a network. Here are some common schemes and their default ports:

• HTTP (Hypertext Transfer Protocol):
• Default Port: 80
• Used for unsecured web traffic.
• HTTPS (Hypertext Transfer Protocol Secure):
• Default Port: 443
• Used for secured, encrypted web traffic with SSL/TLS.
• FTP (File Transfer Protocol):
• Default Port: 21 (control connection)
• Port 20 is often used for active data transfers.
• SMTP (Simple Mail Transfer Protocol):
• Default Port: 25
• Used for sending emails.
• IMAP (Internet Message Access Protocol):
• Default Port: 143 (unencrypted)
• Port 993 is used for IMAP over SSL (IMAPS).
• POP3 (Post Office Protocol 3):
• Default Port: 110 (unencrypted)
• Port 995 is used for POP3 over SSL (POP3S).
• SSH (Secure Shell):
• Default Port: 22
• Used for secure remote access and file transfers (SFTP).
• Telnet:
• Default Port: 23
• Used for unencrypted remote access (mostly outdated and replaced by SSH).
• DNS (Domain Name System):
• Default Port: 53
• Used for translating domain names to IP addresses.
• MySQL:
• Default Port: 3306
• Used for connecting to MySQL databases.
• PostgreSQL:
• Default Port: 5432
• Used for connecting to PostgreSQL databases.
• LDAP (Lightweight Directory Access Protocol):
• Default Port: 389 (unencrypted)
• Port 636 is used for LDAP over SSL (LDAPS).
• RDP (Remote Desktop Protocol):
• Default Port: 3389
• Used for remote desktop connections.
• MSSQL (Microsoft SQL Server):
• Default Port: 1433
• NTP (Network Time Protocol):
• Default Port: 123
• Used for synchronizing time across systems.

These default ports help streamline network communication, but ports can be configured differently if needed.

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