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Forum Discussion
jjstewar2
Dec 09, 2021Aspirant
Router Doesn't seem to be allowing Port Forwarding
I have been trying to set up port-forwarding for microsoft remote desktop. I know I can use teamviewer or one of those, but I want to do it this way with Port forwarding. I've been troubleshooting...
- Dec 17, 2021
So, I figured it out with what you were saying and one of my co-workers because he uses the same ISP that I use and has the same modem that I have. I apprecaite your help and your posts including others that have posted. Here is what a co-worker and I found with your help.
First we looked at my Public IP address.
1. Then we looked at the IP address for the router (not the gateway IP or the IP for the router as a gateway for my computer. The IP address is found in the connection status of the advanced settings. We found that they did not match. So,
2. We then looked up who the IP addresses belong to using a variety of websites until we found AbuseIPDB.com. This website showed us the information we were looking for.
3. First we typed in the Public IP address that showed in my web browser when I typed "What's my IP address?". Ex: 5.2.97.482
4. Second, we looked up the IP address that was showing up on my router after it went through the modem. Ex: 104.25.64.13
5. When I got the results back, the first IP address showed who my ISP was as it should have been. The second IP address was the interesting one as the result to that showed, "Carrier-Grade NAT RFC6598". That is what confused us. My co-worker is paying for a static IP through our ISP which allows him to port forward and why I wasn't port forwarding. We also found a forum or posting talking about what the Carrier-Grade NAT means.
If you don't already know or for anyone else that might be looking into reasons why they may not be able to forward, here is a basic explaination.
The ISP (Greenlight Networks in this case) is using the public IP for more than just you (one customer). It is going through their router first before going to individual modems in the homes of their customers which then gives them a different IP address. Then that IP address is used by your router and modem to get to their router which then goes to the internet. They don't allow the port forwarding unless you pay for a static IP. It's a way to grab money.
Greenlight Networks is a very good company in the Upstate new york area. They are charging me about $50 a month for 500mbps upload and download. They are a fiber optic company. And that is why I am not able to use Microsoft's Remote Desktop.
NCGeek
Dec 16, 2021Aspirant
jjstewar2 wrote:Did that. I gave it a static IP and then tried to do port forwarding on the router to that specific port both externally and internally and then changed it to a different port. Both times it did not work. It did work within my network, but the port forwarding didn't seem to work. I even turned off my Firewall on my computer. I have tried not stopping UPnP as of yet.
If you want to run RDP on anything other than the default port, you have a lot of Windows registry and firewall rules to change, as well. RDP is expected to be used primarily inside a corporate network where both computers involved are in a Windows-controlled "domain." And of course, port forwarding only works if the other computer is actually outside of your LAN, using the public IP to access your router.
https://www.itprotoday.com/mobile-management-and-security/how-map-different-listening-port-remote-desktop-protocol
I am running an FTP server on a computer inside the LAN on my RAX43, which requires forwarding port 21 as well as a range of ports to use as PASV transport ports. It works flawlessly.
jjstewar2
Dec 17, 2021Aspirant
So, I figured it out with what you were saying and one of my co-workers because he uses the same ISP that I use and has the same modem that I have. I apprecaite your help and your posts including others that have posted. Here is what a co-worker and I found with your help.
First we looked at my Public IP address.
1. Then we looked at the IP address for the router (not the gateway IP or the IP for the router as a gateway for my computer. The IP address is found in the connection status of the advanced settings. We found that they did not match. So,
2. We then looked up who the IP addresses belong to using a variety of websites until we found AbuseIPDB.com. This website showed us the information we were looking for.
3. First we typed in the Public IP address that showed in my web browser when I typed "What's my IP address?". Ex: 5.2.97.482
4. Second, we looked up the IP address that was showing up on my router after it went through the modem. Ex: 104.25.64.13
5. When I got the results back, the first IP address showed who my ISP was as it should have been. The second IP address was the interesting one as the result to that showed, "Carrier-Grade NAT RFC6598". That is what confused us. My co-worker is paying for a static IP through our ISP which allows him to port forward and why I wasn't port forwarding. We also found a forum or posting talking about what the Carrier-Grade NAT means.
If you don't already know or for anyone else that might be looking into reasons why they may not be able to forward, here is a basic explaination.
The ISP (Greenlight Networks in this case) is using the public IP for more than just you (one customer). It is going through their router first before going to individual modems in the homes of their customers which then gives them a different IP address. Then that IP address is used by your router and modem to get to their router which then goes to the internet. They don't allow the port forwarding unless you pay for a static IP. It's a way to grab money.
Greenlight Networks is a very good company in the Upstate new york area. They are charging me about $50 a month for 500mbps upload and download. They are a fiber optic company. And that is why I am not able to use Microsoft's Remote Desktop.