How HTTPS Works – Securing Web Communication

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Ever wondered how your browser keeps your data secure while browsing? This infographic breaks down HTTPS (HyperText Transfer Protocol Secure) and how it ensures encrypted, private, and secure communication between your client (browser) and the server.

You Should Know:

1. TCP Handshake

The client and server establish a connection via a three-way handshake (SYN, SYN-ACK, ACK).

Command to simulate TCP handshake:

telnet example.com 443

This command initiates a connection to a server on port 443 (HTTPS).

2. Certificate Check

The server sends an SSL/TLS certificate, verifying its authenticity via asymmetric encryption (public/private keys).

Command to check SSL certificate:

openssl s_client -connect example.com:443

This command retrieves and displays the SSL certificate details.

3. Key Exchange

A session key is securely shared, transitioning from asymmetric to symmetric encryption for efficient data transmission.

Command to generate a session key:

openssl rand -base64 32

This generates a 32-byte random key, simulating a session key.

4. Secure Data Transmission

With the session key, all data is encrypted and securely transferred.

Command to test HTTPS connection:

curl -I https://example.com

This command checks if the HTTPS connection is working.

What Undercode Say:

HTTPS is the backbone of secure web communication, ensuring data integrity, confidentiality, and authentication. By mastering the underlying protocols like TCP, SSL/TLS, and encryption techniques, you can better understand how to secure web applications. For further learning, consider exploring tools like Wireshark for packet analysis or enrolling in networking courses like CCNA to deepen your knowledge.

Additional Resources:

By practicing these commands and understanding the steps, you can gain hands-on experience in securing web communications.

References:

Reported By: Nasir Amin – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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