Configuring NAT with ALG

CAUTION:

In an IRF fabric, NAT configured on physical interfaces does not support ALG.

Configure NAT with ALG for a protocol to translate the IP addresses and port numbers in the payloads for application layer packets.

To configure NAT with ALG:

Step	Command	Remarks
1. Enter system view.	system-view	N/A
2. Configure NAT with ALG for a protocol or all supported protocols.	nat alg { all \| dns \| ftp \| h323 \| icmp-error \| ils \| mgcp \| nbt \| pptp \| rsh \| rtsp \| sccp \| sip \| sqlnet \| tftp \| xdmcp }	By default, NAT with ALG is enabled for DNS, FTP, ICMP error messages, RTSP, and PPTP, and is disabled for the other supported protocols.

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