This article explains what network ports are, classifies well‑known, registered and dynamic ports, demonstrates scanning tools and commands, details common attack techniques such as buffer overflow, DoS and MITM, and provides practical hardening recommendations for the most frequently targeted ports.
This tutorial explains the basic concepts of TCP and UDP protocols, their differences, how network ports work, and demonstrates through examples whether TCP and UDP sockets can share the same port number.
Network ports are numeric endpoints that let operating systems direct traffic to the correct service, with standard values like 80 for HTTP, 443 for HTTPS, 22 for SSH, and others such as 3306 for MySQL, enabling developers to configure custom ports while browsers often hide these defaults for user convenience.
This comprehensive guide explains what network ports are, categorizes well‑known, registered, and dynamic ports, demonstrates common scanning tools and commands, details typical hacker techniques such as SYN scans, buffer overflows, DoS attacks, and provides practical firewall, IDS, and authentication hardening measures for each vulnerable service.
This article explains the dual physical and logical meanings of network ports, classifies them into well‑known, registered, and dynamic ranges, lists common service ports with their typical uses, and highlights security concerns such as malware backdoors and common scanning techniques.
This article explains the two common meanings of network ports, categorizes the 65,535 possible ports into well‑known, registered, and dynamic ranges, and provides detailed descriptions of many specific ports, their associated services, and the security implications or malware that often target them.
This guide explains how to use systemd’s systemctl tool to list all loaded services, filter by active or running state, create a handy alias for quick access, check which ports services listen on, and view firewall‑allowed services on a Linux server.
This article provides a comprehensive reference of the 65535 TCP/UDP ports, detailing the most frequently used ports, their associated services, typical vulnerabilities, and the specific ports commonly used by proxy servers, helping readers quickly identify and troubleshoot network and security issues.
This article provides a comprehensive overview of the 65,535 possible TCP/UDP ports, highlighting frequently used ports, their associated services, typical vulnerabilities, and how attackers may exploit them, helping readers quickly reference and secure network configurations.
