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New Member

Forwarding Multiple Ports - Cisco 877

Hi all, is it possible to specify a range of ports to be NAT'ed on a Cisco 877 router? e.g If you have a VoIP setup and you want to forward 50 RTP ports, can you do this with one IOS commnad?

Thank you.

3 REPLIES
Hall of Fame Super Gold

Re: Forwarding Multiple Ports - Cisco 877

No, you cannot specify a range.

That is rarely necessary, because the router is smart enough to dynamically create NAt translations based on the signaling, SIP or otherwhise.

New Member

Re: Forwarding Multiple Ports - Cisco 877

Are you sure it is not possible?

This forum post that I found this morning seems to say it is:

http://www.velocityreviews.com/forums/showpost.php?s=e829fdb80f99ce97de07761648160f83&p=1957542&postcount=10

I will give it a try and see if it works.

Hall of Fame Super Gold

Re: Forwarding Multiple Ports - Cisco 877

You may be very well right, sorry for saying otherwise.

Still, you shouldn't need any explicit statement like that due to SIP-ALG feature in IOS.

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