Zhone 5100 참조 매뉴얼

CHAPTER 3
Interfaces

You can view all configured NAT port map entries in the 5100/6100 VDR by issuing the show 

nat port_map command.
Syntax: show nat port_map
Example:

In this example, one NAT entry is displayed. The entry maps TCP packets addressed to the 

HTTP web server (see Figure 3-1 on page 54 ) at IP address 10.10.10.2 from the outside port 80 

to an inside port 2280.

The static IP NAT mapping allows the user to define a IP address mapping between a private and 

a public IP address. The private IP address is been seen on the Ethernet port and the public IP 

address is been seen on the WAN side. Both IP addresses needs to be different from the IP 

addresses of the VDR. The public IP address can not be the WAN IP address or the LAN IP 

address. A packet received on the WAN side with the destination IP address of the outside static 

IP mapping configuration is forwarded to the Ethernet side by changing the destination IP 

address to the configured inside IP address.
This feature may be viewed as a larger extension of the port mapping feature. The major 

differences between port mapping and static mapping are:
•

Port mapping does not need an additional “outside” IP address. Static mapping does.

•

In port mapping, only traffic directed to specific ports on the 5100/6100 VDR’s WAN IP 
address are forwarded to the internal host. In case of static mapping, all traffic directed at any 
port of the VDR’s “outside” IP is forwarded to the “inside” IP address.

This feature may be used to open a “transparent” pipe to a host on the Ethernet subnet, where 

complete access to the host is required, and specifying individual port maps is not feasible.

VPacket# show nat port_map

Number of Port Mappings defined: 1

          Outside Inside          Inside

Protocol  Port    Address         Port - Optional

tcp       80      10.10.10.2      2280

VPacket#