R3204P16-HP Load Balancing Module Network Management Configuration Guide-6PW101
Table Of Contents
- Title page
- Contents
- Interface management configuration
- IP addressing configuration
- MAC address table configuration
- Layer 2 forwarding configuration
- Layer 2 forwarding overview
- Configuring general Layer 2 forwarding
- Configuring inline Layer 2 forwarding
- Configuring inter-VLAN Layer 2 forwarding
- Forward-type inline Layer 2 forwarding configuration example
- Blackhole-type inline Layer 2 forwarding configuration example
- Inter-VLAN Layer 2 forwarding configuration example
- VLAN configuration
- ARP configuration
- Gratuitous ARP configuration
- Proxy ARP configuration
- Layer 3 forwarding configuration
- NAT configuration
- Overview
- Configuring a NAT policy in the web interface
- Configuring NAT in the CLIs
- Configuration guidelines
- ALG configuration
- Static route configuration
- RIP configuration
- OSPF configuration
- BGP configuration
- Policy-based routing configuration
- Route displaying
- DNS configuration
- Overview
- Configuring DNS on the web interface
- Configuring DNS in the CLIs
- Troubleshooting IPv4 DNS configuration
- Support and other resources
- Index
102
Configuring DNS mapping
With DNS mapping, an internal host can access an internal server on the same private network by using
the domain name of the internal server when the DNS server resides on the public network.
Follow these steps to configure a DNS mapping:
To do… Use the command…
Remarks
Enter system view system-view —
Configure a DNS mapping
nat dns-map domain domain-name protocol pro-type
ip global-ip port global-port
Required
Setting NAT connection limits
For configurations and commands of NAT connection limits, see Security Configuration Guide.
Displaying and maintaining NAT
To do… Use the command…
Remarks
Display information about NAT address pools
display nat address-group
[ group-number ]
Available in any view
Display all NAT configuration information display nat all Available in any view
Display the NAT configuration information display nat bound Available in any view
Display DNS mapping configuration
information
display nat dns-map Available in any view
Display the internal server information display nat server Available in any view
Display static NAT information display nat static Available in any view
Display NAT statistics display nat statistics Available in any view
Display the configurations and statistics of
output logs
display userlog export Available in any view
NOTE:
Clearing the NAT log buffer implies loss of all NAT logs. In
g
eneral, you are not recommended to use this
command.
NAT configuration examples
NAT configuration example
1. Network requirements
As shown in Figure 52, a
company has three public IP addresses ranging from 202.38.1.1/24 to
202.38.1.3/24, and internal network address 10.110.0.0/16. Specifically, the company has the
following requirements:
• The internal users in subnet 10.110.10.0/24 can access the Internet using public IP addresses
202.38.1.2 and 202.38.1.3, while users in other network segments cannot.
• Configure the upper limit of connections (sourced from 10.110.10.100) as 1000, which means the
number of connections initiated from the internal user to external servers cannot exceed 1000.