TCP
Transmission Control Protocol: a reliable, connection-based protocol used for most internet traffic.
TCP (Transmission Control Protocol) is one of the two main transport protocols of the internet (the other being UDP). TCP establishes a connection using a three-way handshake (SYN, SYN-ACK, ACK) before sending data, guarantees that all data arrives in order, and automatically retransmits lost packets. This reliability makes TCP the protocol of choice for web browsing (HTTP/HTTPS), email, file transfers, and SSH. The trade-off is slightly higher latency compared to UDP because of the connection setup and error checking overhead.
Reference
Related terms
See also
Referenced on
- About DNS Checker
- Brute-force defense for wp-login.php
- Build a DNS Resolver from Scratch in Node.js
- Build a DNS Resolver from Scratch in PHP
- Build a DNS Resolver from Scratch in Python
- Cloudflare Error Codes (5xx, 1xxx) and Fixes
- Complete Guide to DNS Attacks and DNS Security (Prevention, Testing & Mitigation)
- DKIM Record Checker
- DNS Amplification Attack Explained: How Open Resolvers Enable Massive DDoS
- DNS Checker Bot & Scanner Documentation
- DNS Checker Bot IP List
- DNS Lookups in PHP: dns_get_record, gethostbyname, and Beyond
- DNS Lookups in Python: Complete Guide with dnspython
- DNS Queries in Node.js: dns.lookup vs dns.resolve Explained
- DNS Root Servers Explained: The 13 Servers That Run the Internet
- DNS Troubleshooting Tools: What the Pros Actually Use
- DNS Tunneling Attack: How Data Is Smuggled Through Port 53
- Free DNS & Network Tools
- FTP Error Codes Reference and Fixes
- Home
- How DNS Queries Work: A Developer's Guide to the DNS Protocol
- How to Report a DDoS Attack to Your ISP: Evidence, Templates, and Escalation Steps
- How to Report Brute Force SSH and RDP Attacks: Log Evidence and Abuse Report Templates
- How to Report IP Address Abuse: The Complete Guide to Filing Reports That Get Results
- How to Report Malware and Botnet Command-and-Control Traffic From an IP Address
- How to Report Port Scanning and Network Reconnaissance to an ISP
- HTTP Header Checker
- HTTP Status Codes Reference (1xx
- IPv6 Adoption: Which Countries and TLDs Are Leading the Transition?
- Network & Security Tools