π Common Ports: The Essential Networking Numbers
π Common Ports: The Essential Networking Numbers How do computers know which standard service (like web, mail, or secure shell) to use across the globe? Through Well-Known Ports (0β1023). Here are the key points: πΉ 1.
π Common Ports: The Essential Networking Numbers
How do computers know which standard service (like web, mail, or secure shell) to use across the globe? Through Well-Known Ports (0β1023).
Here are the key points:
πΉ 1. Web & Security Ports
Port 80 (HTTP): Unencrypted web traffic.
Port 443 (HTTPS): Secure, encrypted web traffic (the standard today).
Port 22 (SSH): Secure remote administration and server management.
πΉ 2. File & Email Ports
Port 20/21 (FTP): File Transfer Protocol (control & data).
Port 25 (SMTP): Sending emails between servers.
Port 110 (POP3) & Port 143 (IMAP): Retrieving emails.
πΉ 3. Infrastructure & Remote Access
Port 53 (DNS): Resolving domain names to IP addresses (the internet's phonebook).
Port 123 (NTP): Synchronizing clock time across network devices.
Port 3389 (RDP): Remote Desktop Protocol for Windows GUI access.
Port 445 (SMB): File and printer sharing (frequently monitored by security pros).
π Think of these port numbers as fixed service windows at a large government officeβeveryone knows exactly which window to go to for a specific task!
π Which of these ports do you interact with the most during your daily technical work? Let me know!
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Originally published by Dev.to Security. Aggregated on AIWithGhost for educational purposes β full credit and traffic to the original publisher.