WebSocket is a real-time communication protocol that provides simultaneous two-way communication channels over a single Transmission Control Protocol (TCP) connection. It enable bidirectional communication between clients and servers, allowing for more interactive and real-time applications. It is standardized by the…
The network areas displayed here are sorted by size in ascending order: SAN Storage Area Network (SAN) is a dedicated network for storage devices. You can read this post about SAN. LAN Technologies LAN technologies: WAN Technologies WAN technologies: ATM…
Distributed Network Protocol 3 (DNP3) is a set of communications protocols used between components in process automation systems. It plays a crucial role in SCADA systems, where it is used by SCADA Master Stations (a.k.a. Control Centers), Remote Terminal Units…
This post provides resources to security aspects of domain network system (DNS). This post assumes that you already know how a DNS works. You can read an introduction to DNS on this post. Security Controls for DNS Security controls specific…
This post is an introduction to computer networks. Computer Network Devices Computer network devices includes switch, routers or firewalls. You can read this post about computer network devices. Area Networks Examples of area networks are WAN or LAN. You can…
A software-defined network (SDN) is an approach to network management that enables dynamic and programmatically network configuration. This is a contrast with traditional networks, where the network is defined by using hardware components. An SDN looks like a single logical…
A proxy server is a variation of an application-level firewall or circuit-level firewall. It is a server application that acts as an intermediary between a client requesting a resource and the server providing that resource. Possible proxy features: Proxy Server…
Extensive Authentication Protocol (EAP) is an authentication framework, not an actual protocol like PAP or CHAP. EAP allows customized authentication security solutions, such as supporting smartcards, tokens, and biometrics. EAP is often used in network communication protocols, such as those…
This post features computer network authentication protocols. Do not confuse the authentication protocols with the Authentication, Authorization and Accountability (AAA) protocols like RADIUS or TACACS+. Authentication protocols works in the OSI layers 2 and 3, and AAA protocols in layer…
This post summarizes some aspects of information security on computer networks. Network Security Controls Security Gateway Security gateway is a broad term to refer to a network edge security device. Firewall Firewall is a control. Proxy servers are a type…