For definition of rules for security zones, create 'LAN' address profile that includes addresses which are
allowed to access WAN network and 'WAN' network address profile.
esr(config)# object-group network WAN
esr(config-object-group-network)# ip address-range 192.168.23.2
esr(config-object-group-network)# exit
esr(config)# object-group network LAN
esr(config-object-group-network)# ip address-range 192.168.12.2
esr(config-object-group-network)# exit
esr(config)# object-group network LAN_GATEWAY
esr(config-object-group-network)# ip address-range 192.168.12.1
esr(config-object-group-network)# exit
esr(config)# object-group network WAN_GATEWAY
esr(config-object-group-network)# ip address-range 192.168.23.3
esr(config-object-group-network)# exit
To transfer traffic from 'LAN' zone into 'WAN' zone, create a pair of zones and add a rule allowing ICMP traffic
transfer from R1 to R2. Rules are applied with the enable command:
esr(config)# security zone-pair LAN WAN
esr(config-zone-pair)# rule 1
esr(config-zone-pair-rule)# action permit
esr(config-zone-pair-rule)# match protocol icmp
esr(config-zone-pair-rule)# match destination-address WAN_GATEWAY
esr(config-zone-pair-rule)# match source-address LAN_GATEWAY
esr(config-zone-pair-rule)# enable
esr(config-zone-pair-rule)# exit
esr(config-zone-pair-pair)# exit
To transfer traffic from 'WAN' zone into 'LAN' zone, create a pair of zones and add a rule allowing ICMP traffic
transfer from R2 to R1. Rules are applied with the enable command:
esr(config)# security zone-pair WAN LAN
esr(config-zone-pair)# rule 1
esr(config-zone-pair-rule)# action permit
esr(config-zone-pair-rule)# match protocol icmp
esr(config-zone-pair-rule)# match destination-address LAN_GATEWAY
esr(config-zone-pair-rule)# match source-address WAN_GATEWAY
esr(config-zone-pair-rule)# enable
esr(config-zone-pair-rule)# exit
esr(config-zone-pair)# exit
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