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Web-based Configuration Guide

AR650, AR1600, and AR6100 V300R003

This document describes how to configure and maintain your routers using the web platform.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Static NAT

Static NAT

Context

Some enterprise hosts must use fixed IP addresses to access public networks when NAT is enabled. Static NAT maps a public IP address to a fixed private IP address.

NOTE:

When establishing static binding between private IP addresses and public IP addresses, ensure that the public IP address is on the same network segment as the IP address of the interface enabled with static NAT. Packets sent to public network servers can be correctly forwarded to the interface enabled with static NAT.

Procedure

  • Creating a static NAT configuration
    1. Log in to the web platform and choose IP Service > NAT > Static NAT, as shown in Figure 13-6.

      Figure 13-6  Static NAT page

    2. Click Create in the Static NAT area and set parameters in the Create Static NAT dialog box that is displayed. Table 13-7 describes the parameters.

      Table 13-7  Static NAT parameters

      Parameter

      Description

      Interface name

      Name of an interface where static NAT is to be enabled. Generally, Layer 3 interface is configured, except loopback and NULL interfaces.

      Translation type

      Whether to translate addresses according to the protocol type:
      • Protocol translation: translates addresses only when IP packets are transmitted on the specified protocol.
      • Address translation: translates IP addresses when IP packets are transmitted on any protocol.

      Protocol type

      Protocol type for which NAT is used. Currently, the following protocols are supported: Transmission Control Protocol (TCP), User Datagram Protocol (UDP), and Internet Control Message Protocol (ICMP).

      NOTE:
      When this parameter is set to ICMP, you need to set only External IP and Internal IP.

      External IP

      Public IP address used by private network users to access public network servers. The options are as follows:
      • Interface IP address: The IP address of the selected interface is used as the translated public IP address.
      • User-defined: A public IP address is manually specified. The specified IP address cannot be in use. The public IP address must be on the same network segment as the IP address of the NAT-enabled interface.
      • Specified interface: A specified interface address is used as the public IP address.
      NOTE:
      If users access a network through dialup such as PPPoE, you can select Interface IP address.

      External port

      Port number used by private network users to access public network servers. You can select a value from the drop-down list box or enter a port number.

      • Single mapping: indicates that a public IP address (with a specified port number) is mapped to one private IP address (with a specified port number).

      • Multi-mapping: indicates that a public IP address (with a group of port numbers) is mapped to multiple private IP addresses (with a specified port number).

      Internal IP

      IP address of an private network user.

      Internal port

      Source port number used by private network users to access public networks. You can select a value from the drop-down list box or enter a port number.

    3. Click OK.
  • Modifying a static NAT entry
    1. Log in to the web platform and choose IP Service > NAT > Static NAT.
    2. Select a static NAT entry, and click .
    3. In the Modify Static NAT dialog box that is displayed, modify parameters listed in Table 13-7. The parameter Interface name cannot be modified.
    4. Click OK.
  • Deleting a static NAT entry
    1. Log in to the web platform and choose IP Service > NAT > Static NAT.
    2. Select a static NAT entry, and click Delete.
    3. In the dialog box that is displayed, click OK.
  • Updating the static NAT entry
    1. Log in to the web platform and choose IP Service > NAT > Static NAT to check the configured static NAT entry.
    2. Click Refresh to update the static NAT entry.
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Updated: 2019-04-12

Document ID: EDOC1100041803

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