Lab topology:
Lab Requirements:
1. 1.1.1.3 can visit 2.2.2.0
2. Subnet of 1.1.1.0 can only visit the FTP server and INTERNET of 2.2.2.0(By using port L01 of Router P4S-R2 to simulate the internet)
3. Host of 2.2.2.0 is not enabled to visit INTERNET
Lab Process:
P4S-R1
Router>en
Router#conf t
Router(config)#hostname P4S-R1
P4S-R1 (config)#int lo1
P4S-R1(config-if)#ip add 1.1.1.3 255.255.255.0
P4S-R1 (config-if)#no shut
P4S-R1(config-if)#exit
P4S-R1 (config)# access-list 101 permit ip 1.1.1.3 0.0.0.0 2.2.2.0 0.0.0.255 / Allow host of 1.1.1.3 to visit the subnet of 2.2.2.0
P4S-R1 (config)# access-list 101 permit tcp 1.1.1.0 0.0.0.255 2.2.2.0 0.0.0.255 eq 21
/ Allow the subnet host of 1.1.1.0 to visit the FTP server of 2.2.2.0 by using port 21 telnet
P4S-R1 (config)# access-list 101 deny ip 1.1.1.0 0.0.0.255 2.2.2.0 0.0.0.255 / Deny the subnet of 1.1.1.0 to visit the subnet of 2.2.2.0
P4S-R1 (config)#int lo2
P4S-R1 (config-if)#ip add 2.2.2.1 255.255.255.0
P4S-R1 (config-if)#ip access-group 101 out / Apply the extension control list 101 to exit interface
P4S-R1 (config-if)#no shut
P4S-R1 (config-if)#exit
P4S-R1 (config)#access-list 1 deny 2.2.2.0 0.0.0.255 / Deny the subnet of 2.2.2.0 to visit Internet
P4S-R1 (config)#int s0
P4S-R1 (config-if)#ip add 3.3.3.1 255.255.255.0
P4S-R1 (config-if)#clock rate 56000
P4S-R1 (config-if)#no shut
P4S-R1 (config-if)#ip access-group 1 out / Apply the standard control list to exit interface
P4S-R1 (config-if)#exit
P4S-R1 (config)#router rip
P4S-R1 (config-router)#network 1.0.0.0
P4S-R1 (config-router)#network 2.0.0.0
P4S-R1 (config-router)#network 3.0.0.0
P4S-R1 (config-router)#exit
P4S-R2
Router>en
Router#conf t
Router(config)#hostname P4S-R2
P4S-R2 (config)#int s1
P4S-R2 (config-if)#ip add 3.3.3.2 255.255.255.0
P4S-R2 (config-if)#clock rate 56000
P4S-R2 (config-if)#no shut
P4S-R2 (config-if)#exit
P4S-R2 (config)#int lo1
P4S-R2 (config-if)#ip add 4.4.4.1 255.255.255.0
P4S-R2 (config-if)#no shut
P4S-R2 (config-if)#exit
P4S-R2 (config)#router rip
P4S-R2 (config-router)#network 4.0.0.0
P4S-R2 (config-router)#network 3.0.0.0
P4S-R2 (config-router)#exit
