Port Forwarding, Fios Home Router G3100 doesn't work
Boredom
Newbie

I recently (last week) upgraded my old Actiontec router (MI424WR Rev 1) to the Quantum router, model Number G3100. Prior to the upgrade, I had port forwarding configured for RDP and several other applications. After the upgrade, and setting the same forwarding rules, I cannot RDP into any machines using my external IP address, but I can still access them using their internal addresses.

I've tried configuring multiple ports, directly connecting one of the machines to the Quantum router, disabling the firewall on the router entirely to allow all inbound connections, and nothing appears to work. There are no log entries in the router's firewall logs either, which I find somewhat suspect.

I have also tried disabling the machine's firewall (the one I want to RDP into) to rule it out as the cause. That had no effect, and the firewall logs (before I disabled it) do not show any DENY packets for inbound RDP connections, so I'm 99.99999% that it isn't the machine configuration. Plus, it works from internal connections.

I've also tried opening a different port, not RDP, and have the same results. I can access it (a simple TCP listener app) internally, but I cannot access it using my public IP address and mapped port (9999 in this case).

Here is a photo of the current configuration of the RDP mapping. This same configuration worked prior to the upgrade.

image

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1 Solution
alecjacobryan
Enthusiast - Level 1

After entering your dynamic dns, go to DNS Server.  Enter your dynamic dns (blah.duckdns.org) and your internal IP address for the device you want to reach.  This does not solve the port forwarding issue, but actually works without having to forward any ports.

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JoeBo1
Enthusiast - Level 2

Sadly, my friends G1100 went flakey and she went back to the G3100 which she hadn't gotten around to sending back to Verizon, Soooo, I did what I could to make things work.

Previous advice about DNS, I misread. You don't put in your external address, you put in the internal one, meaning anything coming in via the DDNS name will be routed to 1 machine. I created a second DDNS name for the rest of the network from outside, but then found that duckdns.org does allow sub addresses. So, if you have blah.duckdns.org as your name, you can put in your G3100 DNS that ftp.blah.duckdns.org is address 192.168.1.23 and cams.blah.duckdns.org is address 192.168.1.25, meaning that the sub address specifically tells dumb G3100 which pc to go to. Port forwarding should be ignored, so no socket translation, but I didn't get that far since I didn't need it for this.

However, the good folk at Verzion still have me stymied with FTP serving. It won't get through the G3100, but is just fine through the G1100. The data connection can't be made. I use different addresses to keep the hackers away. Like 900 for the incoming FTP connection (normally 21) and 50000-50020 for the data channels. But, this does not work on the G3100, it connects, but no data. I suspect the router tosses the incoming connection instead of believing the port forward for 50000-50020 and passing it  through to the FTP server. A scan will show that port 900 is open but the others are closed. I found no log in firewall, which I also turned completely off to test this, or security or advanced or nothin'.

I'm looking at free SFTP servers to get around this, but that will be a pain.

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Stern1
Newbie

Same problem here.

Noticed in the Fios app, under "Connected Devices", it is not registering any devices online.  

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rbztek
Newbie

i just switched over from comcast to verizon and everything is working well except this. What the hell? Verizon fix this bug!

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LawrenceC
Moderator Emeritus

As this thread is now over two years old, it will be locked in order to keep discussions current. If you have the same or a similar question/issue we invite you to start a new thread on the topic.

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