port forward using cisco 2921 and 3560x

[Rodante Evangelista]

How can I port forward my NVR, my router is cisco 2921 and 3560x router switch

[Zekeria Sammantar]

Please post this on the correct board.

[Jeff Levensailor]

i think you're referring to static nat

ip nat inside source static tcp 1.2.3.4 80 10.20.30.40 80

where you need tcp port 80 forwarded from 10.20.30.40 on the outside to 1.2.3.4 on the inside

[Rodante Evangelista]

but i have 3 router a cisco2921 voice and 3560x router switch with multiple vlan and a home router

[Rodante Evangelista]

how can i port forward in cisco 3560

your command is not possible

[roncro]

Hello,

I see this is a really old thread, but thought I'd give it a shot.

So I am looking into the same issue/problem too. I would want  to forward an "incoming request" on the outside, public IP, to a specific port on a specific host in a private network, the "inside".

I am trying to set up and play with a Cisco 2921, older I know, but still.

I used to use  older, small business routers, and basically what you'd have there is a "port Forwarding Table" (for example on a Cisco RV320). Of course the added complication is that the public IP is not static, and can change.

So instead of something like:

ip nat inside source static tcp 1.2.3.4 80 10.20.30.40 80  (assuming 1.2.3.4 80 is the private network IP) I would like to "connect" that to the incoming interface.

Let's assume that gi0/0 is connected to a cable modem "the internet"

I would want something like (and probably have this totally wrong):

ip nat inside source static tcp 1.2.3.4 80 gi0/0 80

But what I want is that if "something" comes in on port 80 on/through gi0/0 directed at my public IP (that is dynamic and can change) it gets forwarded to 192.168.x.y port 80 for example regardless of what the public/outside IP is.

Hope this is not too convoluted/vague.

thanks,

Ron