Business gateway - NAT to IP Address on local LAN

Im having a lot of trouble setting up a NAT statement on my Netgear modem.

My modem IP is 10.1.1.1 and is connected to 10.1.1.2 on my firewall. Behind the firewall I have a LAN or 192.168.1.X. I am trying to NAT one of my static IPs from Comcast to a server on the 192.168.1.X network. When I do add this via 1 to 1 NAT, I get the message Status: Invalid IP Address.

I had to get a new modem today and havent been able to get this working. With my previous modem, it worked.

Responses

Comcast_Gabriel

Official Employee

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297 Messages

6 years ago

Hi! Thanks for reaching out. I can help with the internet service concern. Would you mind sending a private message with your full name, the last four digits of your account number, and a phone number linked to the account so I can help?

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jreedtbf

New Contributor

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5 Messages

6 years ago

This is the configuration of my IP's from my old modem that was working.

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jreedtbf

New Contributor

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5 Messages

6 years ago

Information sent.

I also called Comcast support but they werent able to help.

It seems the problem is NAT'ing to an address on a different subnet. I have a route setup to that subnet but that doesnt help. I'm not sure why this worked before on the SMC modem. Is there a different mode or feature that needs enabled?

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CC-Michelle1

New Member

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163 Messages

6 years ago

Jeremy, thank you for all of the information. I am happy to assist with the modem settings. Can you please confirm the address on the account? Can you tell me what the firewall settings are at on the modem?

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jreedtbf

New Contributor

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5 Messages

6 years ago

Just sent you a private message.

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shinkson

New Member

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1 Message

5 years ago

Were you able to get a solution for this problem? I have the same exact issue down to the issue starting after receiving a new modem.

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CC_RobertC

Problem solver

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144 Messages

5 years ago

Hi there! I can absolutely work on it with you if you have the time. We can definitely get to the bottom of this. Are you available at the moment?

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user_c55b0f

New Contributor

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1 Message

4 years ago

I'm having this problem. ive tried nat directly to the sever, nat to my router then port forward. Ive also tried installing my vpn server on ther router for the simplest setup. This last setup was the only one that somewhat works. But its very slow and disconnects a lot. Unusable

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Comcast_Alyssa

Official Employee

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52 Messages

Good morning @user_c55b0f and welcome to the Comcast Business Forums page where we have an awesome community of experts and specialists on stand-by to help with questions and concerns over social media! In order to research this further, we will just need to pull up the account. To get started, would you mind sending us a private message with your name, address, and account number or a phone number linked to the account by clicking the "message" icon in the upper right page of any forum page. Once you click on that, input our shared handle Comcast Business to send us a private message. We look forward to working with you!

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4 years ago

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