H3C Technologies H3C SecPath F1000-E - Manual (Page 32)

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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:
Step Command
1. Enter system view. system-view
2. Enter interface view. interface interface-type interface-number
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 ]
Configuring an internal server
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),
internal network information (internal IP address local-address), and internal server protocol type.
Both internal servers and their external IP addresses can support L3VPN. If an internal server belongs to
an L3VPN, you also need to specify the vpn-instance-name argument. Without this argument specified,
the internal server does not belong to any VPN.
Configuring a common internal server
After mapping the internal IP address of a common internal server to an external IP address, hosts in
external networks can access the server located in the internal network.
To configure a common internal server:
Step Command
1. Enter system view. system-view
2. Enter interface view. interface interface-type interface-number
3. Configure a common internal server.
nat server [ acl-number ] [ index ] protocol pro-type global
{ global-address | interface interface-type interface-number |
current-interface } global-port1 global-port2 [ vpn-instance
global-name ] inside local-address1 local-address2 local-port
[ vpn-instance local-name ] [ track vrrp virtual-router-id ]
CAUTION:
•
The firewall 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.