Port Fowarding on a C891F without NAT

[xSaschx]

Hi 

I have running a C891F on a Cable Connection with a AVM Fritzbox as a Cable Modem. The problem was with the AVM Fritzbox i had Double NAT. So i deactivated the NAT on the Cisco Route and set a route from the Cisco Router and a Route from the Fritzbox to the Cisco Router. It works without problems. Now i want to Port Forwarding a Port to a PC in my Network behind the Cisco Router. The only Configs i found are with NAT enabled. How i can mal a port forwarding without NAT enabled ??

[Georg Pauwen]

Hello,

all port forwarding needs to be done on the Fritzbox. What would the entry on the Cisco have looked like, that is, what do you want to accomplish...translate a port on the inside to a port on the outside ?

[xSaschx]

Hi 

I forget that the Cisco Router is in the DMZ of the Fritzbox. The Fritzbox have a other Network. I want to forward one Port from the Outside (Internet) to a PC inside the Network where are the Cisco the Router. Sorry my english is not so good ;o)))

[Georg Pauwen]

As far as I recall the Fritzbox doesn't really support a DMZ but simply the 'exposed host' functionality for one device, under the condition that the IP address of this one host has been assigned by the Fritzbox through DHCP. Is that right ?

[paul driver]

Hello

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@xSaschx wrote:

Hi 

I have running a C891F on a Cable Connection with a AVM Fritzbox as a Cable Modem. The problem was with the AVM Fritzbox i had Double NAT. So i deactivated the NAT on the Cisco Route and set a route from the Cisco Router and a Route from the Fritzbox to the Cisco Router. It works without problems. Now i want to Port Forwarding a Port to a PC in my Network behind the Cisco Router. The only Configs i found are with NAT enabled. How i can mal a port forwarding without NAT enabled ??

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1. Can you enable PF on the Firxbox?
2. Use some 3rd party PF software on the PC
3. If you have spare routable addressing then you could limited internet access to the pc via Access-list.

res
Paul