Port 443 kis kaam aata hai?

HTTPS — TLS se encrypted web traffic. Ye har https:// URL ka default hai, aur kyunki ye lagbhag kabhi block nahin hota, kaafi doosre protocols bhi jaan-bujhkar isi par chalte hain.

TCP aur UDP ports mein kya farak hai?

Ye 65,536-65,536 positions ke alag namespaces hain. TCP ordered, confirmation wali delivery deta hai — web, email, databases; UDP bina ceremony ke bhejta hai, jo DNS, video calls aur games ke liye suitable hai.

Well-known, registered aur dynamic ports kya hain?

0–1023 well-known hain, jinme historically admin rights chahiye hote the; 1024–49151 apps ke liye registered hain jaise PostgreSQL ka 5432; 49152–65535 dynamic hain, jo OS outgoing connections ke source-ports ki tarah baantta hai.

Email kaun se ports use karta hai?

Alag kaamon ke paanch: server-se-server SMTP ke liye 25, authenticated sending ke liye 587, implicit TLS sending ke liye 465, IMAP ke liye 143 aur IMAP over TLS ke liye 993.

Port Number Lookup

Kisi bhi TCP ya UDP port par kya chalta hai jaaniye, ya koi service kaunsa port leti hai — dono directions mein search, ranges explained ke saath.

Port Number Lookup ek built-in table par poori tarah aapke browser mein chalta hai. Koi network scan nahin hota aur aapki searches kabhi upload nahin hotin.

CIDR Calculator kholein

Port Number Lookup ke baare mein

Port Number Lookup roz-marra ke networking sawaal ki dono directions ka jawaab deta hai. Ek number type karein — 5432, 6379, 27017 — aur dekhein convention se us par baithi service, uska protocol aur ek-line description. Ek naam type karein — ssh, postgres, https — aur uska port dhoondhein. Table un ports ko cover karti hai jo sach mein firewall rules, docker-compose files aur error messages mein aate hain: classic services, email ke paanch ports ki ulझan, har bada database, aur 3000, 8080, 5173 jaise development ke regulars. Ek banner har number ko classify karta hai: well-known (0–1023), registered (1024–49151) ya dynamic (49152–65535).

Features

Port number ya service name se search
Har entry ka protocol: TCP, UDP ya dono
Har service ki ek-line description
Range classification: well-known, registered, dynamic
Databases, email, web, VPN aur dev ports cover
Type karte hi turant filtering

Port Number Lookup kaise use karein

443 jaisa number ya postgres jaisa naam type karein
Table se service, protocol aur description padhein
Range classification wala banner check karein
Search clear karke common ports browse karein

Example

Input

Output

PostgreSQL · TCP · registered range

Har PostgreSQL connection string ka default port yahi hai.

Common errors aur troubleshooting

Koi service ek aise port par chalti hai jo table kisi aur ko batati hai. — Port assignments conventions hain, obligations nahin — kuch bhi kahin bhi listen kar sakta hai. Table expected occupant batati hai; machine ki process list actual batati hai.
Chahiye wala port results mein nahin hai. — Table un ports par focus karti hai jo sach mein encounter hote hain, saare 65,536 par nahin. Missing port shayad IANA mein kisi obscure cheez ke liye registered ho.
Port block karne se traffic nahin ruka. — Modern services doosre ports se ja sakti hain — jaise DNS over HTTPS 443 par jaata hai. Zaruri hone par app ya destination se bhi filter karein.

Aksar pooche jaane wale sawaal

Port 443 kis kaam aata hai?: HTTPS — TLS se encrypted web traffic. Ye har https:// URL ka default hai, aur kyunki ye lagbhag kabhi block nahin hota, kaafi doosre protocols bhi jaan-bujhkar isi par chalte hain.
TCP aur UDP ports mein kya farak hai?: Ye 65,536-65,536 positions ke alag namespaces hain. TCP ordered, confirmation wali delivery deta hai — web, email, databases; UDP bina ceremony ke bhejta hai, jo DNS, video calls aur games ke liye suitable hai.
Well-known, registered aur dynamic ports kya hain?: 0–1023 well-known hain, jinme historically admin rights chahiye hote the; 1024–49151 apps ke liye registered hain jaise PostgreSQL ka 5432; 49152–65535 dynamic hain, jo OS outgoing connections ke source-ports ki tarah baantta hai.
Email kaun se ports use karta hai?: Alag kaamon ke paanch: server-se-server SMTP ke liye 25, authenticated sending ke liye 587, implicit TLS sending ke liye 465, IMAP ke liye 143 aur IMAP over TLS ke liye 993.

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