Computer Networking · Advanced level

Advanced level · Module 3 of 6 · 22 guided hours

Network Security and Remote Access

Protect networks with firewalls, ACLs, segmentation and secure remote access.

Learning objectives

  • Design firewall policies and ACLs
  • Configure site-to-site and remote-access VPNs
  • Apply network segmentation and access control
  • Secure network device management

Topics

  • stateful firewalls
  • ACLs
  • site-to-site VPN
  • remote-access VPN
  • segmentation and NAC
  • secure management

Lessons

  1. Lesson 1 Firewalls and Access Control Lists

    Allow only the traffic the organisation needs.

    stateful firewallsACLsrule orderdefault deny

  2. Lesson 2 VPNs

    Connect sites and remote users securely over the internet.

    encryption tunnelssite-to-site VPNremote-access VPNMFA for VPN

  3. Lesson 3 Segmentation and Network Access Control

    Limit how far an attacker or fault can spread.

    zoneseast-west trafficnetwork access controlIoT isolation

  4. Lesson 4 Securing Network Management

    Protect the devices that run the network.

    management VLANSSH and HTTPSAAAconfiguration backups

Practical activity

Add firewall rules, a site-to-site VPN between offices and secured management to the Packet Tracer network, and test them.

Expected outcomes

  • Secured multi-site networks
  • Safe remote access

Assessment

Security configuration and test results reviewed.

Taught live by an instructor — online or in person. Free course lessons are for self-study and do not lead to a certificate — see registration options.