Configuring Nat With Dns Mapping; Configuring Nat Hairpin; Configuring Nat With Alg - H3C MSR 2600 Configuration Manual

Step
5. Configure load sharing
NAT Server.

Configuring NAT with DNS mapping

NAT with DNS mapping must operate together with NAT Server and NAT with ALG.
To configure NAT with DNS mapping:
Step
1. Enter system view.
2. Configure a DNS
mapping for NAT.

Configuring NAT hairpin

NAT hairpin enables an internal host to access an internal server or another internal host by using NAT
addresses.
NAT hairpin typically operates with NAT Server, outbound dynamic NAT, or outbound static NAT.
To configure NAT hairpin:
Step
1. Enter system view.
2. Enter interface view.
3. Enable NAT hairpin.

Configuring NAT with ALG

Configure NAT with ALG for a specific protocol to analyze and process the payload fields in the
application layer packets.
To configure NAT with ALG:
Command
nat server protocol pro-type global
{ { global-address | current-interface | interface
interface-type interface-number } { global-port |
global-port1 global-port2 } | global-address1
global-address2 global-port } [ vpn-instance
global-name ] inside server-group
group-number [ vpn-instance local-name ] [ acl
acl-number ]
Command
system-view
nat dns-map domain domain-name
protocol pro-type { interface
interface-type interface-number | ip
global-ip } port global-port
Command
system-view
interface interface-type
interface-number
nat hairpin enable
125
Remarks
By default, no internal
server exists.
You can configure
multiple load sharing
internal servers on an
interface.
Remarks
N/A
By default, no DNS mapping for NAT
exists.
You can configure multiple DNS
mappings for NAT.
Remarks
N/A
N/A
By default, NAT hairpin is disabled.