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drewj
Beginner
540 Views
Message 1 of 4

No devices in DMZ drop down and PORT forward does not work for exchange

Hi,

 

We have just purchased B.T broadband with the new home hub, we have set up our hub/router the same as our old one with the correct ports forwarded for exchange to work and remote web space, it all works internally accessing the address but nothing works externally, emails don't get through etc..

 

Any ideas?

 

Also why does my device not appear in the DMZ drop down?

 

Much appreciated any help, thanks a lot

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3 REPLIES 3
Keith_Beddoe
Distinguished Sage
Distinguished Sage
536 Views
Message 2 of 4

Re: No devices in DMZ drop down and PORT forward does not work for exchange

These suggestions may help

Port forwarding problems

 

You should not need to put devices in the DMZ.

 

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drewj
Beginner
534 Views
Message 3 of 4

Re: No devices in DMZ drop down and PORT forward does not work for exchange

Hi,

Thanks for your reply, I have read through the topic "port forwarding problems" and it pretty much says it will not work because of loopback is not possible?

Why cannot add the device through DMZ, this is till protected by the BT firewall?

Thanks
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Keith_Beddoe
Distinguished Sage
Distinguished Sage
531 Views
Message 4 of 4

Re: No devices in DMZ drop down and PORT forward does not work for exchange

The home hub firewall will offer no protection to a device in the DMZ, as all incoming ports will be forwarded to the device.

 

All you will be left with is the normal NAT function, which is needed to provide a range of local IP adresses.

 

If you look at my security page, you will see there is a website you can use to find open ports.

 

You may find it better to use a router which supports local loopback.

 

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