H3C Technologies H3C SecBlade FW Cards - Manual (Page 27)

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With a specific ACL associated with an address pool or interface address, NAPT translates the source
address of a packet permitted by the ACL into an IP address of the address pool or the interface address,
with using the port information.
Follow these steps to configure NAPT:
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Configure NAPT by associating an
ACL with an IP address pool on the
outbound interface for translating
both IP address and port number
nat outbound [ acl-number ]
[ address-group group-number ]
[ track vrrp virtual-router-id ]
Required
Return to system view quit —
Configuring an internal server
1. Introduction to internal server
To configure an internal server, you need to map an external IP address and port number to the internal
server. This is done through executing the nat server command on an interface.
Internal server configurations include external network information (external IP address global-address
and external port number global-port), internal network information (internal IP address local-address
and internal port number local-port), and internal server protocol type. According to different
internal/external network information configurations, internal servers can be classified into common
internal servers and load sharing internal servers.
Both internal servers and their external IP addresses can support VPN. If an internal server belongs to an
VPN, you also need to specify the vpn-instance-name argument. Without this argument specified, the
internal server does not belong to any VPN.
2. Configuring a common internal server
After mapping the internal IP address/port number (local-address and local-port) of a common internal
server to an external IP address/port number (global-address and global-port), hosts in external
networks can access the server located in the internal network.
Follow these steps to configure a common internal server (III):
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—