Nat experiment demonstration (Huawei switch equipment configuration)

One 、NAT Introduce

NAT（Network Address Translation） Network address translation , Can be IP In the data header IP Address translation to another IP Address , The purpose of address reuse is achieved by converting the port number ,NAT Because the implementation is simple , Effectively alleviated IPv4 The shortage of public addresses , At present, it is widely used .

Two 、 The experiment purpose

adopt NAT, Realization PC1 and PC2 Can access the Server1;

3、 ... and 、 The topology

Four 、 Experimental configuration

（1）PC1,PC2 Configuration IP Address , Subnet mask and gateway .

（2）R1 To configure

<Huawei>system-view 

# Enter view mode

[Huawei]sysname R1

# Modify the router name

[R1]un in en

# Turn off log prompt

[R1]int g0/0/0

[R1-GigabitEthernet0/0/0]ip add 192.168.1.254 24

[R1-GigabitEthernet0/0/0]q

[R1]interface g0/0/1

[R1-GigabitEthernet0/0/1]ip add 12.1.1.1 24

[R1-GigabitEthernet0/0/1]q

[R1]nat address-group 1 12.1.1.3 12.1.1.5

# Create an address pool

[R1]acl 2000

# Create standards ACL

[R1-acl-basic-2000]rule 10 permit source 192.168.1.0 0.0.0.255

# Allow intranet address segments

[R1-acl-basic-2000]q

[R1]int g0/0/1

[R1-GigabitEthernet0/0/1]nat outbound 2000 address-group 1 

# External network interface call ACL And address pool

[R1-GigabitEthernet0/0/1]q

[R1]ip route-static 0.0.0.0 0 12.1.1.2

#R1 Configure the default route on Next is ISP Of G0/0/0 mouth

（3）ISP To configure

<Huawei>system-view  

[Huawei]sysname ISP

[ISP]un in en

[ISP]int g0/0/0

[ISP-GigabitEthernet0/0/0]ip add 12.1.1.2 24

[ISP-GigabitEthernet0/0/1]int g0/0/1

[ISP-GigabitEthernet0/0/1]ip add 23.1.1.1 24

[ISP-GigabitEthernet0/0/1]q

[ISP]ospf 1

[ISP-ospf-1]area 0

[ISP-ospf-1-area-0.0.0.0]network 12.1.1.0 0.0.0.255

[ISP-ospf-1-area-0.0.0.0]network 23.1.1.0 0.0.0.255

（4）Server1 To configure

<Huawei>system-view

[Huawei]sys Server1

[Server1]interface g0/0/0

[Server1-GigabitEthernet0/0/0]ip add 23.1.1.2 24

[Server1-GigabitEthernet0/0/0]q

[Server1]un in en

[Server1]ospf 1

[Server1-ospf-1]area 0

[Server1-ospf-1-area-0.0.0.0]network 23.1.1.0 0.0.0.255

（5） use PC1 and PC2 ping Server1  Test connectivity

PC1 and PC2 ping Server1 Sure ping through , Configuration is successful .