HP MSR Series Command Reference Manual page 239

global-port: Specifies the public port number. The default value and value range are the same as those
for the local-port argument.
local-address: Specifies the private IP address.
vpn-instance global-name: Specifies the MPLS L3VPN instance to which the advertised public IP
addresses belong. The global-name argument is a case-sensitive string of 1 to 31 characters. Do not
specify this option if the public IP addresses do not belong to any VPN instance.
vpn-instance local-name: Specifies the MPLS L3VPN instance to which the internal server belongs. The
local-name argument is a case-sensitive string of 1 to 31 characters. Do not specify this option if the
internal server does not belong to any VPN instance.
server-group group-number: Specifies the internal server group to which the internal server belongs.
With this parameter, the load sharing NAT Server feature is configured. The group-number argument
specifies the internal server group number. The value range for this argument is 0 to 65535.
acl { acl-number | name acl-name }: Specifies an ACL by its number or name. The value range for the
ACL number is 2000 to 3999. The ACL name is a case-insensitive string of 1 to 63 characters. Only
packets permitted by the ACL can be translated by using the mapping.
Usage guidelines
You can configure the NAT Server feature to allow internal servers (such as Web, FTP, Telnet, POP3, and
DNS servers) in the internal network or an MPLS VPN instance to provide services for external users.
NAT Server is usually configured on the interface connected to the external network on a NAT device. By
using the global-address and global-port arguments, external users can access the internal server at
local-address and local-port. The following table describes the address-port mappings between an
external network and an internal network for NAT Server.
Table 47 Address-port mappings for NAT Server
External network
A public address
A public address and a public port number
A public address and N consecutive public port
numbers
N consecutive public addresses
N consecutive public addresses and a public port
number
A public address and a public port number
A public address and N consecutive public port
numbers
Internal network
A private address
A private address and a private port number
A private address and a private port number
N consecutive private addresses and a private port
number
A private address and N consecutive private port
numbers
A private address
N consecutive private addresses
A private address and a private port number
N consecutive private addresses and a private port
number
A private address and N consecutive private port
numbers
A private server group
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