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AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
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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).
How Do I Configure the NAT ALG Function?

How Do I Configure the NAT ALG Function?

Procedure

# Enable the NAT ALG function for FTP, DNS, Session Initiation Protocol (SIP), Point-to-Point Tunneling Protocol (PPTP) and Real-Time Streaming Protocol (RTSP).

<Huawei> system-view
[Huawei] nat alg ftp enable
[Huawei] nat alg dns enable
[Huawei] nat alg sip enable
[Huawei] nat alg pptp enable
[Huawei] nat alg rtsp enable

More information

Some protocol packets, such as FTP packets, may carry IP addresses or port numbers in the data portion, which cannot be translated by the NAT server. These protocol packets require special processing to ensure normal protocol interaction. The NAT ALG function is a commonly used approach to implement NAT traversal for such protocols. This function translates IP addresses and port numbers in data portions of IP packets according to address translation rules. In this way, transparent relay is implemented for the protocol packets.

Currently, the NAT ALG function is applicable to the FTP, DNS, SIP, PPTP, and RTSP protocols.

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Updated: 2019-05-10

Document ID: EDOC1000079719

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