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Figure 67 Network diagram
Configuration procedure
# Specify IP addresses for the interfaces on the router. (Details not shown.)
# Enter interface view of GigabitEthernet 2/0/2.
<Router> system-view
[Router] interface gigabitethernet 2/0/2
# Configure NAT Server to allow external users to access the FTP server by using the address
202.38.1.1 and port 21.
[Router-GigabitEthernet2/0/2] nat server protocol tcp global 202.38.1.1 21 inside
10.110.10.3 ftp
# Configure NAT Server to allow external users to access the Web server 1 by using the address
202.38.1.1 and port 80.
[Router-GigabitEthernet2/0/2] nat server protocol tcp global 202.38.1.1 80 inside
10.110.10.1 http
# Configure NAT Server to allow external users to access the Web server 2 by using the address
202.38.1.1 and port 8080.
[Router-GigabitEthernet2/0/2] nat server protocol tcp global 202.38.1.1 8080 inside
10.110.10.2 http
# Configure NAT Server to allow external users to access the SMTP server by using the address
202.38.1.1 and port number defined by SMTP.
[Router-GigabitEthernet2/0/2] nat server protocol tcp global 202.38.1.1 smtp inside
10.110.10.4 smtp
[Router-GigabitEthernet2/0/2] quit
Verifying the configuration
# Verify that the host on the external network can access the internal servers by using the public
addresses. (Details not shown.)
# Display all NAT configuration and statistics.
[Router] display nat all
NAT internal server information:
Totally 4 internal servers.
Interface: GigabitEthernet2/0/2
Protocol: 6(TCP)
Global IP/port: 202.38.1.1/21
Local IP/port : 10.110.10.3/21
Config status : Active
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