HTTPS Protocol | Network Security

443

Default Port

TLS 1.3

Current Standard

Header Fields

~93%

Web Traffic Encrypted

📦

HTTPS Header Fields Click any field to expand its description and see examples

⚡ Request Method

e.g. GET · POST · PUT · DELETE Variable length

🔗 Request URI

e.g. /api/v1/data?query=test Variable length

📋 HTTP Version

e.g. HTTP/1.1 · HTTP/2 · HTTP/3 Variable length

✅ Status Code

e.g. 200 · 301 · 404 · 500 Variable length

💬 Reason Phrase

e.g. OK · Not Found · Forbidden Variable length

📝 Headers

e.g. Content-Type · Authorization · Cookie Variable length

📄 Message Body

Payload data (HTML, JSON, binary, etc.) Variable length

Example

🤝

TLS Handshake Animation Watch how a secure connection is established before data flows

💻

Client
(Browser)

ClientHello

ServerHello + Certificate

Key Exchange

Server Finished

🔒 Encrypted Request

🔒 Encrypted Response

🖥️

Server
(Web Server)

Client → Server

Server → Client

Encrypted Data

⚖️

HTTP vs HTTPS Comparison Key differences between the secure and insecure versions

Feature	🔓 HTTP	🔒 HTTPS
Default Port	80	443
Encryption	None — plaintext	TLS/SSL encrypted
Authentication	✗ No server verification	✓ Certificate-based
Data Integrity	✗ Can be tampered	✓ MAC prevents tampering
SEO Impact	Penalized by Google	Ranking signal (Google)
Browser Indicator	"Not Secure" warning	Padlock icon shown
Performance	Slightly faster (no TLS overhead)	Minor overhead; HTTP/2 often faster
Credential Safety	✗ Credentials exposed	✓ Credentials encrypted
Attack Surface	MITM, eavesdropping, replay	Mitigates MITM & eavesdropping
Certificate Required	No	Yes (CA-issued or self-signed)

🔢

Common HTTP Status Codes Response codes returned by servers in HTTPS communication

200

Request succeeded. Response body contains the requested resource.

201

Created

Resource successfully created. Common after POST requests.

204

No Content

Request succeeded but no body to return (e.g. DELETE).

301

Moved Permanently

Resource has permanently moved; update your bookmarks.

302

Found (Redirect)

Temporary redirect; the resource is at a different URI.

400

Bad Request

Server could not understand the request due to malformed syntax.

401

Unauthorized

Authentication required. Client must provide credentials.

403

Forbidden

Authenticated but not authorized to access this resource.

404

Not Found

The requested resource could not be found on this server.

500

Internal Server Error

Server encountered an unexpected condition preventing fulfillment.

503

Service Unavailable

Server is temporarily overloaded or down for maintenance.

101

Switching Protocols

Server agrees to upgrade protocol (e.g., to WebSocket).

🧠

Knowledge Check Quiz Test your understanding of HTTPS and TLS/SSL

HTTPS Protocol Quiz

Score: 0 / 0