Network security is a broad topic that covers a lot of topics. Here you will find lessons about security topics like:

  • How to permit or deny traffic using access-list on Cisco IOS routers or the ASA firewall.
  • How to use AAA to configure authentication, authorization and accounting for your network.
  • All sorts of VPNs (Virtual Private Networks) like IPsec, SSL VPN, DMVPN on Cisco IOS routers and the ASA firewall.
  • How to protect your routers, switches, firewalls and other devices.