Web Scraping & Networking Knowledge
Agar aap web scraping aur networking seekhna chahte hain, to aapko website structure, HTTP requests, APIs, aur data extraction techniques ki samajh honi chahiye. Yeh knowledge ethical hacking, data analysis, automation, aur cybersecurity ke liye kaafi useful hoti hai.
1. Web Scraping Kya Hota Hai?
Web scraping ek technique hai jisme website se automatically data extract kiya jata hai. Yeh legal tab hota hai jab aap robots.txt policy follow karein aur APIs ka use karein.
Web Scraping Ke Methods:
- Manual Scraping – Inspect Element ya copy-paste se data nikalna.
- Parsing HTML (BeautifulSoup, lxml) – Python libraries ka use karke HTML se data extract karna.
- Automated Browsing (Selenium, Playwright) – JavaScript-rendered pages scrape karne ke liye browser automation.
- API Scraping (Requests, cURL) – Agar website API allow karti hai to direct API se data lena.
Common Web Scraping Tools & Libraries:
✔ Python: BeautifulSoup, Scrapy, Selenium, Requests
✔ JavaScript: Puppeteer, Cheerio
✔ Browser Extensions: Web Scraper, Data Miner
2. Networking Knowledge
Agar aap web scraping, cybersecurity, ya ethical hacking me expert banna chahte hain, to networking fundamentals ki samajh honi chahiye.
Networking Basics:
- IP Address & DNS – Internet me communication kaise hota hai.
- HTTP/HTTPS Protocol – Website request-response cycle kaise work karta hai.
- Ports & Protocols – Common ports (80, 443, 21, 22) aur protocols (TCP, UDP).
- Proxy & VPN – Location hide karne aur geo-restricted content access karne ke liye.
- Cookies & Session Handling – Websites ka user authentication mechanism.
Networking Tools & Techniques:
✔ Wireshark – Network packets ko analyze karne ke liye.
✔ Burp Suite – Website security aur penetration testing ke liye.
✔ cURL & Postman – APIs aur web requests test karne ke liye.
✔ Nmap – Network scanning aur reconnaissance ke liye.
Ethical Considerations
✔ Legal Scraping – Website ka robots.txt file check karein aur API documentation follow karein.
❌ Illegal Activities – Bina permission ke protected data extract karna, bypassing security, ya hacking illegal ho sakta hai.
Agar aap ethical hacking ya cybersecurity seekhna chahte hain, to aapko web scraping aur networking ka knowledge hone se bug bounty aur penetration testing me bhi help milegi!