(5Typical Configuration Cases of Security Prevention .................................5 -15.1 Configuring ACL ...................... 5-35.1.1 Example of configuring ACL ...................... .................................5-35.2 Configuring NAT................................ .................5-65.2.1 Comprehensive Use of NAT in Campus Network ................................5 -65.2.2 Comprehensive Use of NAT in Enterprise Networks .................................5-105.2 .3 Example for Configuring Bidirectional NAT and Internal Server ................................5-135.2.4 Configuring Internal Server Dual Egress NAT Example ...................................... 5-155.2.5 Example for Configuring Intent NAT...................... ................................5-195.3 Configuring the Virtual Firewall ................................ .................................5-215.3.1 Example for configuring a virtual firewall................................. ................5-215.4 Configuring Security Policies ................................. ................................5-265.4.1 Example for configuring session table aging time and long connection ................................ .................5-265.4.2 Example for configuring ASPF................................. .................5-315.4.3 Example of configuring a blacklist ............................................... .................................5-345.4.4 Example for Configuring MAC and IP Address Binding.... .................................5-375.4.5 Example of configuring port mapping.................. .................................5-395.5 Configuring Attack Defense ...................... .................................5-41)