Defending the Perimeter from Cyber Attacks — NCSC Certified Training

Level: Intermediate
Rating: 4.8/5 4.75/5 Based on 20 Reviews

This Defending the Perimeter from Cyber Attacks course will teach you to ensure the confidentiality, integrity, and availability of your organization’s information by protecting your communications and data. You will learn how to define and implement security principles, install and customise secure firewalls, build Virtual Private Network (VPN) tunnels, and safeguard your organization’s network perimeter against malicious attacks.

Key Features of this Defending the Perimeter Training:

  • After-course instructor coaching benefit
  • Learning Tree end-of-course exam included

You Will Learn How To:

  • Fortify your network perimeter to provide an integrated defence
  • Prevent or mitigate the effects of network attacks with a firewall
  • Detect and respond to network attacks with Intrusion Detection and Prevention (IDP)
  • Design, install, and configure secure Virtual Private Networks (VPNs)
  • Mitigate the impact of Denial-of-Service (DoS) attacks



Choose the Training Solution That Best Fits Your Individual Needs or Organisational Goals


In Class & Live, Online Training

  • 4-day instructor-led training course
  • One-on-one after course instructor coaching
  • Earn 23 CompTIA CEUs
  • Pay later by invoice -OR- at the time of checkout by credit card
View Course Details & Schedule

Standard £2095




Team Training

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  • Full - scale program development
  • Delivered when, where, and how you want it
  • Blended learning models
  • Tailored content
  • Expert team coaching

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Our flexible, easy-to-redeem training vouchers are available to any employee within your organisation. For details, please call 0800 282 353 or chat live.

In Class & Live, Online Training

Note: This course runs for 4 Days

  • 25 - 28 Apr 9:00 AM - 4:30 PM BST Online (AnyWare) Online (AnyWare) Reserve Your Seat

  • 18 - 21 Jul 9:00 AM - 4:30 PM BST Online (AnyWare) Online (AnyWare) Reserve Your Seat

  • 3 - 6 May 2:00 PM - 9:30 PM BST Washington, DC / Online (AnyWare) Washington, DC / Online (AnyWare) Reserve Your Seat

  • 5 - 8 Jul 2:00 PM - 9:30 PM BST Herndon, VA / Online (AnyWare) Herndon, VA / Online (AnyWare) Reserve Your Seat

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Important Defending the Perimeter Course Information

Defending the Perimeter Course Outline

  • Setting Your Security Objectives

    Defining security principles

    • Ensuring data Confidentiality, Integrity and Availability (CIA)
    • Assessing defensive techniques
    • Setting a generic security stance

    Developing a security policy

    • Balancing risk with business requirements
    • Identifying your information assurance objectives
    • Choosing security technologies
  • Deploying a Secure Firewall

    Installing a firewall

    • Determining the appropriate firewall type
    • Selecting and hardening the operating system
    • Virtualising the firewall appliance

    Configuring a firewall to support outgoing services

    • Supporting simple services: HTTP, SMTP
    • Filtering dangerous content and handling encrypted traffic
    • Managing complex services: VoIP, audio and video

    Providing external services securely

    • Implementing publicly accessible servers
    • Building a DMZ architecture
    • Supporting SMTP mail

    Allowing access to internal services

    • Customising DNS for firewall architectures
    • Configuring Network Address Translation (NAT)
    • Developing access lists for client server applications
  • Detecting and Preventing Intrusion

    Deploying an IDS

    • Placing Network IDS (NIDS) within your network architecture
    • Operating sensors in stealth mode

    Detecting intrusions in the enterprise

    • Designing a multi-layer IDS hierarchy
    • Managing distributed IDS

    Interpreting alerts

    • Verifying IDS operation
    • Minimising false positives and negatives
    • Validating IDS events and recognising attacks

    Stopping intruders

    • Exploiting IDS active responses
    • Snipping a TCP session
    • Controlling access with a firewall update
  • Configuring Remote User Virtual Private Networks (VPNs)

    Building VPN tunnels

    • Compulsory vs. voluntary tunnels
    • Supporting remote users with layer 2 tunnels
    • Connecting remote sites with layer 3 tunnels

    Deploying client software

    • Assessing remote access VPN alternatives
    • Implementing remote user authentication
    • Leveraging Layer 2 Tunnelling Protocol (L2TP)
    • Protecting L2TP tunnels with IPsec Transport Mode
  • Creating Site-to-Site VPNs

    Applying cryptographic protection

    • Ensuring confidentiality with symmetric encryption
    • Exchanging symmetric keys with asymmetric encryption
    • Checking message integrity with hashing
    • Managing digital certificates with PKI

    Comparing tunnelling and protection methods

    • Employing VPN concentrators and VPN-capable routers
    • Applying IPsec Tunnel Mode
    • Assessing tunnelling protocols
    • Evaluating VPN topologies
  • Integrating Perimeter Defences

    Reducing the impact of denial-of-service (DoS) attacks

    • Mitigating bombardment attacks
    • Rejecting connection-based attacks with IPSs
    • Blackholing and sinkholing
    • Implementing a DoS Defence System (DDS)
    • Blacklisting attack sites and address ranges

    Perimeter architectures

    • Integrating IDS and VPNs with your firewall architecture
    • Positioning externally accessible servers
    • Monitoring and controlling wireless networks

Team Training

Defending the Perimeter Training FAQs

  • Can I learn to defend the perimeter from cyber attacks online?

    Yes! We know your busy work schedule may prevent you from getting to one of our classrooms which is why we offer convenient online training to meet your needs wherever you want. This course is available in class and live online.

Questions about which training is right for you?

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