HP VPN Firewall Appliances NAT and ALG Configuration Guide

26
Ste
p
Command
1. Enter system view.
system-view
2. Enter interface view.
interface interface-type interface-number
3. Configure No-PAT by associating an ACL with an
IP address pool on the outbound interface for
translating only IP addresses.
nat outbound acl-number address-group
group-number [ vpn-instance vpn-instance-name ]
no-pat [ track vrrp virtual-router-id ]
Configuring NAPT
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.
To configure NAPT:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. 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
[ vpn-instance
vpn-instance-name ]
[ port-preserved ] ] [ track vrrp
virtual-router-id ]
If you specify the port-preserved
keyword, source port number tries
not to be changed.
If you do not specify the
port-preserved keyword, NAPT
also translates source port
number.
Configuring an internal server
Overview
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.
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.
The device supports using the interface address as the external address of an internal server, which is the
Easy IP feature. If you want to specify an interface, the interface must be a loopback interface and must
already exist.
If you configure an internal server using Easy IP but do not configure an IP address for the interface, the
internal server configuration does not take effect.
To configure a common internal server (1):