CISSP Exam Note (Domain 2: Telecommunications and Networking Security) – Remote Access Security Management

November 24, 2009 · Posted in Information Security, Information Systems 

Key Concepts:

  • Confidentiality – no disclosure of data
  • Integrity – no alteration of data
  • Availability – no destruction of data

Common Remote Connections

  • xDSL – Digital Subscriber Line
  • Cable Modem
  • Wireless
  • ISDN – Integrated Services Digital Network

Common Tools in Securing External Remote Connections

  • VPN – Virtual Private Network
  • SSL – Secure Socket Layer
  • SSH – Secure Shell

Technologies for Remote Access Authentication

  • RADIUS –  Remote Authentication Dial In User Service – is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for computers to connect and use a network service. RADIUS was developed by Livingston Enterprises, Inc., in 1991 as an access server authentication and accounting protocol and later brought into the IETF standards. (Source: http://en.wikipedia.org/wiki/RADIUS)
  • TACACS – Terminal Access Controller Access-Control System - is a remote authentication protocol that is used to communicate with an authentication server commonly used in UNIX networks. TACACS allows a remote access server to communicate with an authentication server in order to determine if the user has access to the network. (Source: http://en.wikipedia.org/wiki/TACACS)

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Types Remote Node Authentication

  • PAP – Password Authentication Protocol – clear text
  • CHAP – Challenge Handshake Authentication Protocol – protects password

Remote User Management

  • Justification of remote access
  • Support issues
  • Hardware & software distribution

Intrusion Detection Process

  • Notification
  • Remediation

Remote Access Security Management focuses in the creation of:

  • Host and networked based monitoring
  • Event notification
  • CIRT – Computer Incident Response Team
    • CIRT Performs
      • Analysis of event
      • Response to incident
      • Escalation path procedures
      • Resolution – post implementation follow-up
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