Cisco SA520-K9 Administration Guide - Page 117

Firewall Configuration Using Other Tools to Prevent Attacks, Restrict Access, and Control Inbound Traffic 4 Blocking Outbound Traffic to an Offsite Mail Server The following rule blocks access to the SMTP service to prevent a user from sending email through an offsite mail server. Parameter From Zone To Zone Service Action Source Hosts Value Secure (LAN) INSECURE (Dedicated WAN/Optional WAN) SMTP BLOCK Always Any Using Other Tools to Prevent Attacks, Restrict Access, and Control Inbound Traffic In addition to firewall rules, the security appliance provides a number of other tools to help you to protect your network from undesired inbound traffic. • Configuring Attack Checks • Configuring MAC Filtering to Allow or Block Traffic • Configuring IP/MAC Binding to Prevent Spoofing • Configuring a Port Triggering Rule to Direct Traffic to Specified Ports Cisco SA500 Series Security Appliances Administration Guide 117