1.配置pc1，2的ip
2.防火墙配置
[SRG]int g0/0/2
[SRG-GigabitEthernet0/0/2]ip address 192.168.1.1 24
[SRG-GigabitEthernet0/0/2]q
[SRG]int g0/0/3
[SRG-GigabitEthernet0/0/3]ip address 192.168.2.1 24
[SRG]firewall zone untrust
[SRG-zone-untrust]add int g0/0/2
[SRG-zone-untrust]q
[SRG]firewall zone trust
[SRG-zone-trust]add int g0/0/3
[SRG-zone-trust]q
[SRG]policy interzone trust untrust inbound
[SRG-policy-interzone-trust-untrust-inbound]policy 1
[SRG-policy-interzone-trust-untrust-inbound-1]action permit
[SRG-policy-interzone-trust-untrust-inbound-1]q
[SRG-policy-interzone-trust-untrust-inbound]q
[SRG]policy interzone trust untrust outbound
[SRG-policy-interzone-trust-untrust-outbound]policy 1
[SRG-policy-interzone-trust-untrust-outbound-1]action permit
[SRG-policy-interzone-trust-untrust-inbound-1]q
[SRG-policy-interzone-trust-untrust-inbound]q