Category Networks

Authentication Protocols

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…

AAA Network Protocols

This post summarizes Authentication, Authorization and Accountability (AAA) protocols or AAA network protocols. Do not confuse the AAA protocols with the authentication protocols like EAP, CHAP and PAP. Authentication protocols works in the OSI layers 2 and 3, and AAA…

Identity and Access Management

Identity and Access Management (IAM) is one of the basics of information security. Concepts related to Authentication Continuous authentication Monitors user behavior continuously to ensure that the authenticated user remains the same throughout a session. Risk-based authentication analyzes user behavior…

Network Access Control

Network Access Control (NAC) is a security solution that enforces policy on devices that access networks to increase network visibility and reduce risk. NAC’s posturing capability determines if a system is sufficiently secure and compliant enough to connect to a…

Email Protocols

This post presents some aspects related to electronic mail (email or e-mail) protocols. Email Operational Protocols STMP An open relay is an insecure SMTP server that does not authenticate sneders before accepting and relaying email and are typically quickly exploited…

Transport OSI Layer Protocols

This post summarizes transport layer protocols. List of Transport Layer Protocols Transport Layer Protocols: TCP and UDP are the main transport protocols of the TCP/IP framework. You can find a list of popular TCP and UDP ports on this post.…

Network Routing Protocols

This post summarizes gateway protocols or routing protocols on computer networks. All of them are within OSI layer 3. List of Network Routing Protocols Overall list of network routing protocols: The two main categories of network routing protocols are: Interior…

Directory Services

This post summarizes some standards and implementations of Directory Services. List of Directory Services LDAP Lightweight Directory Access Protocol (LDAP) is a standard, not an implementation. A domain is a collection of subjects and objects that share a common security…