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We'll get this sorted out! Are you using the Xfinity app, or admin tool to set up port forwarding, @GeneralG02? Is there an error message or code you're receiving when attempting to do so?
Port forwarding
I'm having issue opening a port(16261 and 16262) have tried everything from factory reseting my router, disabling upnp, making the device a dmz, trying other devices, turning off firewalls completely. But every single time the ports refuse to open idk what else to do
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XB7 Gateway ethernet ports are all dead
I have experienced two power outages; the first fried one ethernet port, and the second killed the other 3 ports. Now I can not use wired connections to my XB7 gateway. This is a problem, as my job requires I have a wired connection. I have tried going through the customer support bot by calling the
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Customer Service
@user_avf1u6 @Gus68 FWIW. The XB8 does not have a 10Gbe port. The fastest port is 2.5 gig.
Upgraded from 1.1 gbps to 2.1 gbps and not seeing any difference
I recently upgraded my 1 gbps xfinity internet to 2.1 gbps and in order to do so, xfinity sent me a XB8 Gateway to replace my XB7. I installed it yesterday and put it in bridge mode to connect to my orbi 870 mesh router with 2 satelites. I also tried it initially just with the xb8 gateway on its own
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@SkyhawkDriver wrote:WAN aggregation combines two physical interfaces into a single virtual interface.I have the Arris T25 and have 802.3ad LAG set to combine both gigabit LAN ports on the modem into a virtual 2Gb port.I then have WAN aggregation ena
WAN Aggregation
I just upgraded my router to one that supports WAN aggregation. Do I need a second IP adress for that? Can you tell me what the price of that service is? Thank you for your time.
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Hi there @ronlm! Thanks for letting us know that you are also experiencing the same port issues. Can you let us know if you have attempted any troubleshooting steps?
Access internal web server from inside network
I have a web server inside my network. I've set up port forwards to access it from outside. I have no problem accessing the server on ports 80 or 443 (http or https) from outside my LAN by my domain name. I can no longer access the web server from inside my LAN (this changed in the last few days) by
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user_c0qv44 Here is a link https://www.xfinity.com/support/articles/email-port-25-no-longer-supported that will go over the details as to why Comcast doesn't support port 25. Let us know if you need any further assistance.
Like others, port 25 unblock needed.
Hi, I'm a web developer and can't send any emails from localhost (development box) with one of my clients that operates their email server on port 25. How can I get this unblocked on my end, quickly?
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I see that in post https://forums.xfinity.com/conversations/email/port-25-unblock-art-of-the-business-as-usual-runaround-and-is-there-anybody-out-there/636861fc92a15b227c29043f Xfinity was able to unblock this port. I am prepared to take responsibil
Unblocking outbound port 25 for use of smtp server
Hello, I'm hoping that someone can help me in requesting that outbound requests on port 25 be unblocked for my account. I tried calling in, but the representative didn't seem to understand the request and ended up transferring me to Google's support line without even letting me know. Any help would
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@handrew3 When a device is not listed in the device dropdown when trying to set up a port forward rule. Verify that the device is connected to the network and powered on. If the device is connected and turned on, close the Xfinity app and relaunch
Desktop connected via Ethernet not showing in list of connected devices
My desktop that is connected to the router via ethernet with a static IP is not showing in the list of registered devices. I can access the admin page for the router on the device and can connect to the internet, but I can not set up port forwarding because the app does not show it as connected. I h
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Slow Upload Speeds
Hello, I am facing an issue where none of the systems on my network are able to get above 20-23mbps upload (ethernet or wifi). I have the gigabit package where it should be 1000 mbps down. I previously had an XB7 gateway but was facing issues with devices disconnecting. I also faced issues with port
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Your Home Network
I also use Fantasy Grounds, Ultimate License, and have set up the proper port forwards to allow connection. This is still blocked unless "Advanced Security" is accessed to authorize each connection and then have them attempt to connect a second time
Advanced Security whitelist
We've had probably a hundred or more of the users of our software that are on Xfinity be affected by the Advanced Security feature blocking our software from performing basic networking (HTTPS or direct). This has been happening for months now. We have searched repeatedly for ways to whitelist our s
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I now have port 443 forwarding working. It did not work initially, but the next day it started working. So I am confirming it should be possible to get it to work.
Incoming traffic from port 443 not working anymore
I'm working on a software demo to show some people and I'm running everything locally for now. Last night it was working great - traffic was coming in on port 443. As of today, my web service (Vercel) is showing a 403 Forbidden error when it tries to access my service via a subdomain -> my public IP
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@XfinityGabby Thanks for the reply. I noticed that the one port (with the orange bar) has not been functioning at all. The other port sometimes works, but quite often not. So far I haven't been able to figure out what's causing it to work. I activa
LAN ports on XB7 don't work
Hi, I'm new to the forum. Just moved and had xfinity installed less than 2 weeks ago. They gave me the XB7 and wifi has been working, although it's slow sometimes (frustrating, especially if you run the check in the app it just tells you it works well). I want to connect a few devices via LAN and tr
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@user_67938a You are able to do some port forwarding and set up other more advanced settings via our app, but it really depends on what you're trying to do. Do you currently have a DPC3941B?
Is the Cisco DPC3941B a NAT router?
I'm expanding the network beyond the gateway which will create several VLAN's each with their own address ranges. Can I do this with the DPC3941B ?
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@user_nbl603 Awesome I'm glad you got your port forwarding concerns revolved! Feel free to reach out to us anytime and thank you for being the best part of the Xfinity
Port forwarding we're having some trouble
I am getting the message "We're having some trouble. Please try again. If the problem persists check back later. This has been a week of trying. Same result. Power-cycled the modem several times with no change. We are trying to establish a new port forward. The device does show up in the list. After
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We appreciate your patience @scotts8747! Based on the details you’ve mentioned, the manual option in the modem appears to be the closest option for what you are trying to set up. The details needed to fill out that section in the app should be availa
How do II set up http port forwarding on my Xfinity Gateway?
I want to set up port forwarding on my xfinity Gateway to my Apache http server. The admin tool at 10.0.0.1 doesn’t allow it (it says to use the App) and the App doesn’t list http as a “common application.” There is a “Manual Setup” option but I don’t know how to set that up. Any advice on how to se
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Is there a router in the mix here ? If hardwired, are you using at least a Cat6 or greater cable ? Does your NIC's Ethernet port support 2 gig or greater ?
Ubiquiti UCI pegged at 940 Mbps Down when paying for Gigabit 2x
Currently experiencing our Ubiquiti UCI pegging around 940 Mbps down after several restarts and attempts at different times of the day. We're currently paying for the Gigabit 2x and want to ensure speeds delivered to the modem are as expected. I know that the device is supported for Next Gen Speed T
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(new workaround discovered) If anybody is still dealing with this issue, I have found a new way to get the chatbot to take you to the port forwarding page. In the Xfinity app, go to the chatbot and do the following: 1. Write "Take me to the port forw
Port forwarding on app "Something unexpected happened"
For many months I have been unable to load the port forwarding page on the app. There was once a work around I found on reddit where you could prompt the AI assistant to respond and was basically a back door way into getting the app to load the port forwarding option. However the AI no longer respon
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@user_qog4p3 For clarity. You would use the number 1 phone port for connecting a phone. Not any of the ethernet / LAN ports.
EG
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Bridge Mode and Voice Services
When you put the Xfi modem into bridge mode, does the voice service still work or not? I have seen this answer given definitively on this and other forums with completely different answers. So I thought I would ask again as straight forwardly as possible. If I have voice services, and I put the mode
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