Xfinity blocked ports. However testing continues to fail on the ports betwee.

Xfinity blocked ports. 4ghz and I have a WIFI extender connected but port test show all 5 ports to be blocked by my Wireless network. One of those ports has a small red lebel on it. It's not on the blocked port list from comcast. When a certain port is known to cause vulnerability to the security and privacy of your information, Xfinity blocks it to protect you. Oct 20, 2023 · Like others on this forum, I'm posting only to request a port 25 unblock. Thanks for taking some time to reach out to our community about the port forwarding. The Mobile Link device only works on 2. After getting it blocked, I deleted and reforwarded the ports with no luck. Does anyone know what this means? It is port Dec 27, 2023 · As someone who recently upgraded to xfinity i have 2 ps5s on the same internet, however i bought a deco mesh system set static ip and port forwarding for the 1 Ps5, the other i set up using the xfinity wifi and set port forwarding for it (obviously different than the other) the problem has went away since doing this. I've been using this commercial VPN for years. I want to forward ports 22, 80, 443, and 8123 to my Pi to set up my Home Assistant configuration. This article provides a We would like to show you a description here but the site won’t allow us. Following this guide (which has confirmed working in the comments for Steamdecks and ot Mar 16, 2023 · Here are the ports that we specifically block: https://www. This link shows how to set up the port forward in case you want to check your steps. May 3, 2022 · A few days ago these ports all of a sudden have stopped working, I have not changed anything in my home network and they have previously been working for months. Learn more about why email port 25 is no longer supported. The articles below clearly say that port 25 is blocked, but the agent said they don’t block for business. They will not forward. Can someone who knows anything about Comcast's tech please fix this for me. Lastly, most copier techs I have talked to are utter morons when it comes to networking. Per the article: Inbound and outbound, not blocked by default. Here is a complete guide on port forwarding comcast router. Can you check if there is any blocking on this address or port, please? Thank you. As such, Comcast does not support port 25 for the transmission of email by our residential Internet customers. All of the sudden this morning, my connection dropped and I can't reconnect. I am already forwarding port 25565 and it is working fine. ANSWERED: Xfinity Blocked Internet Ports List and How to Block Ports Find out which ports are blocked by Xfinity and Comcast services, and why. Last night it was working great - traffic was coming in on port 443. Oct 29, 2024 · One source suggested that Comcast was blocking a port before it gets out into the tunnel (along the lines of your note about blocking this at the DOCSIS level), but that’s not possible either. Unfortunately, after this upgrade, all DNS queries fail because traffic using UDP port 53 is somehow blocked. I even have 10 base T stuff that still works. How should I go about debugging this to suss out I will be unplugging my router and hooking up a system directly to my modem this weekend, but I don't think it's a router issue as I haven't made any changes. Jun 23, 2023 · Yeah. I know that sometimes Port checker tools can falsely claim that the port rules that have udp protocol can falsely state they are closed but are anyways. When a certain port is known to cause vulnerability to t Blocked Services: Click Add and define services and ports to be blocked using Parental Controls. Find out which ports are blocked by Xfinity and Comcast services, and why. Went through support. Pinging the WAN interface of our firewall from their home network results in all of the packets being either dropped or they complain that the destination is unreachable. Port 8123 tests fine and works the way i expect it, but when I test the port 443, the connection is repeatedly refused. However testing continues to fail on the ports betwee Apr 20, 2020 · Hello, All of a sudden my xFI Gateway will not connect to my computer via ethernet. Select Port Forwarding. In that case, it's probably better to change the server configuration. Nov 24, 2018 · Hi, I have created mail server and setup everything that it need but due to unknown reasons port 25 is blocked . We configure powerful firewall and other utilty application on our servers to deny any un-authorized access and unauthorize use of our servers. Learn how to block ports on your Xfinity router to enhance network security. , Outlook Express) from sending email. Feb 8, 2015 · So occasionally, Comcast will block inbound TCP port 25, but if you call in and/or IM one of the mods on this forum, they can have that block removed. Trusted Computers: Specify the devices you would like to retain internet access on your network by marking Yes next to the device name. So now I need to ask, does Xfinity block port 8211? Is this some weird top level setup xfinity has to force you to use their app for advanced settings? Jan 21, 2023 · Hello @user_145110, thanks for reaching out for help on our forums! We do not support port 445 for your protection and do not unblock this at all. Mar 7, 2022 · I have portforwarding set up on port 443 and 8123. Aug 26, 2024 · Xfinity blocking server connection Hello, recently xfinity started blocking my access to my ssh server through blocking port 22 and actually black listing the server ip itself. They were set up through the xfinity website. When a certain port is known to cause vulnerability to t Jan 6, 2022 · Xfinity xFi allows control and customization of your home network. Under Trusted Computers, Click on Yes next to the devices you want to give full internet access. If the problem persists, Oct 24, 2021 · Hello I had my Bobcatminer running for 3 months with no issues and now Xfinity keeps blocking traffic to my device when I approved port forwarding for Port 44158, firmware updates, ports 22 and 443 open Outbound. Apr 29, 2020 · Hello all, I just got the new xFi Gateway 3rd Generation and it has 4 ethernet ports, glad it does. My guess is it's some kind of network-layer problem in the router. How interesting. So now I can't login to work!!! Group Call Park with Business VoiceEdge allows you to place calls on hold and direct them to a Call Park Group where another user can retrieve the call. Select your network on the Xfinity app or select See Network on the xFi website. I need to receive UDP from port 500, 4500, and 123. Xfinity is somehow blocking my miner from receiving packets. I even tried DMZ. All information on the internet passes through Sep 26, 2023 · I need to know how to unblock ports 8883 and 53. Everything had been working fine since then, until I changed the xfinity data speed plan for my account. In Xfinity support document for blocked port, these are not mentioned. Please help! Dec 18, 2020 · Hi, It seems that ports UDP500 and/or UDP4500 are blocked for me. net email servers will no longer accept submission via port 25. A free open port check tool used to detect open ports on your connection. What is going on with port 443 and Their block page does not say they are blocking these services and the customer service agents say all sorts of things from "you own your modem so we can't help you" and "it's your router" to "those ports aren't being blocked. But I'd rather run it through gmail, much better interface/spam filter. Apr 19, 2021 · Our VoIP system utilizes a series of ports between 9000 and 11000. Sep 22, 2022 · This is a post from future me to past me, or at least to an intrepid Googler. I have restarted my router but the portforwarding is still unsuccessful. After testing with multiple PCs I found that if I use my phone's wifi hotspot and cellular data I can connect, but when I am going through xfinity I cannot connect at all. Once you've set up and activated your Xfinity Gateway (modem/router), you can enhance your security, personalize your settings, and more. Feb 20, 2025 · I talked to the network engineers at my company and they told me that if I connect to the VPN through my cell phone hotspot and I don't connect through XFinity, it is because there is some blocking on XFinity. I have yet to encounter anyone who even knows what a port is. I logged into the router and under hardware/LAN Ethernet both ports are showing status as "Inactive". An unsecured port that can be used to send spam. However, it will prevent email programs or clients (e. I already tried a new ethernet cable and that did Jan 24, 2020 · I have several IP cameras (in addition to the Xfinity cameras) set up and have a port open so that I can view them remotely. Oct 28, 2022 · Hi, Ports on the internet are like virtual passageways where data can travel. After much troubleshooting, Comcast appears to be blocking UDP Port 5060 (SIP) traffic entirely. I asked who could help, and he called is supervisor, Eric, who told me that Xfinity only provides the network connection and does not support configuration of devices. I have static IPs and servers at this location. Jan 30, 2024 · I'm at a loss The only thing I can think of is Xfinity has a separate firewall that's run at a higher level beyond my house. Consequently, many Comcast/Xfinity users report Comcast dropping the VPN connection or blocking VPN ports. If you're talking about 465 to a remote system, that should not be blocked by us. Apr 5, 2023 · Ports 53, 80, and 443 are open on my Gateway but not 3389. Wtf is wrong with Comcast. Comcast supports 465 and 587 to smtp. . First, make sure that the Advanced Security feature is disabled, as it may block traffic from open ports. When I open up a command window and run Netstat -a, I see the following display for the relevant ports. I've also tried replacing port 31011 with 8080 with the same results. Understanding how to configure port forwarding, a crucial aspect of network management, is essential for optimizing performance, hosting services, and ensuring seamless communication for various applications. With it your able to create user profiles and even pause certain devices from accessing your home network. When Bridge Mode is enabled, you can access the Xfinity app to manage your account, but you won’t be able to use Xfinity xFi and WiFi Boost Pods features to manage and personalize your network. Static IPs have been installed and the modem firewalls have been disabled. Or for that matter, why I would need to port forward *ANYTHING* inside my LAN. However when I'm on any of Comcast's Xfinity wifi hotspots the Wireguard tunnel doesn't work. It's super rare for an Ethernet port to fail on other devices. How do I gain access to my gateway's port settings via an Ethernet connected computer? How do I check and change it's port settings to ensure nothing is being blocked? Jun 21, 2024 · If you are unable to forward ports from the gateway using the Xfinity app, there are a few things you can try. I had properly port forwarded this in the xfinity app (and have always done this over the years with no issue). So, is there a way to keep xFi Advanced Security enabled yet still access my cameras from outside the network? Howdy everyone, I was setting up the port forwards such as 25565 and 3389 earlier today and all of a sudden all my ports got blocked. Aug 22, 2013 · It seems that port 5567 is being blocked. Port 443 is not listed on the Blocked Port list. Your gateway should not be blocking communication between devices. Nov 25, 2013 · Also ports 8080, 8181, 23 &2323 ports are used by Comcast for testing and maintenance access to the gateway. Try setting up a VPN Gateway on the Azure side for a point to site tunnel to just tunnel in and Mar 12, 2025 · Deselect the checkbox next to Enabled. I cannot ping or anything, I know it’s on xfinitys side as well because it works perfectly fine through w vpn. When I enable the advanced security, it blocks the port and I am no long. Hello, I have a Motorola MB6811. Seems to be pretty common. So, I've given up on googling because I cant find help with this Firstly, let me say AND confirm right now The XFinity modem UI is blocking ports 80 and 443 NOT Xfinity themselves. Select Advanced Settings under More. Dec 5, 2014 · They attempted to open all of the ports directly from the sonic wall and had no luck. Comcast tech support has not been supportive. How does one tell the UI to stop using port 80 and start 80 votes, 96 comments. Learn more about using Xfinity Advanced Security. I have called Comcast Tech support and they say they are open. I port forward in the Xifi app and it says the ports are forwarded but when I do the test they are blocked. PS Advanced security is turned off. Sep 1, 2016 · You do not port forward 587 on your cable modem unless you are running a mailserver. How can I interpret this display? Sep 13, 2014 · I'm trying to get my mail server working with my new comcast service, and it appears that port 25 outbound is being blocked? I can sniff the packet leaving a remote destination on the Internet, a I have wireguard working well on port 51821. Feb 24, 2021 · Is comcast now blocking ports 22 or 3389? If so, how do I turn it off? If I can't turn it off, I will have to change providers, so this is desperate. Only scan one port at a time, using the protocol the service is running. Once I unchecked these blocked ports, everything works fine now. Nov 15, 2023 · Agreed with @flatlander3. This stack overflow reply covers it nicely with iptables (if this link shows up and they don't scrub it Jun 29, 2016 · We are continuously working to protect the privacy and security of Xfinity Internet customers, and one of the ways we do that is by blocking Internet “ports” that are commonly used for malicious traffic. Can someone give me some advice here? Mar 27, 2015 · In conclusion, Comcast DPC3939B does not intentionally block or open ports that are specific to any implementation, with the exception of this information . However, I don't know of any circumstance where they block port 465 here is the official list of blocked ports: Three-Way Calling allows you to make a three-way call with two other parties, so all parties can communicate with each other simultaneously. I was using a high number in replace of 80 for http but it is now blocked. Oct 11, 2020 · To comply with someone for something we need to block the incoming ports 443 and 60443, just the incoming, if we block the outgoing nobody can access https I can get into the router (Comcast supplied business router, says "Technicolor" on it) but want to make sure I do it correctly. Jul 20, 2023 · Upon request to our Customer Security Assurance team this block can be removed, enabling access to use port 25 for other email domains, though the comcast. So now I can’t open ports and my upload is slower, so I reinstall the Xfinity modem/router and get that all hooked back up … and still can’t forward a port manually or even limp around in the DMZ. Nov 3, 2023 · ️ Does Xfinity/ Comcast block VPN? In the past, Comcast was infamously renowned for such practices that led to Xfinity not working with VPN. They were still closed. They also are blocking some UDP Port 123 (Network Time Protocol) packets as well. For decades. Managed Oct 15, 2021 · The Comcast tech told me that many customers had complained about this, but that there was nothing he could do. Some of them include Xfinity xFi gateway, xFi advanced gateway, XB6 wireless, and more. If you are trying to scan YOUR IP address, you can use a phone hotspot or do it when you are offsite. Anybody have any thoughts/suggestions? Dec 6, 2023 · Are you struggling with unresponsive Ethernet ports on your xFi Gateway? It’s a common issue that can cause a lot of frustration, especially when your wireless connection just doesn’t cut it for gaming, streaming, or important work tasks. If a device is selected as a Trusted Computer, it will bypass the configured Parental Control settings. Sometimes the feature will block the ports you open. Had router factory resetted Feb 4, 2021 · Hello, why Comcast blocks my Home router ports 465 & 587? I can not send mail. The only ones I have found open are 21 and 443 of the more common ones. The only outbound port Comcast blocks is port 25 and that is only blocked in the cable modem. Why would this h May 4, 2024 · ADT security service said I need to open ports for their gateway to work. As of today, my web service (Verc We would like to show you a description here but the site won’t allow us. May 11, 2022 · Does anyone know if Comcast Business blocks port 25? On the phone and having trouble getting to talk to anyone that even knows what ports are. Comcast Business User Guides help you get the most out of your Comcast Business services. Please let us know if you have any questions. Nov 23, 2021 · By the way, Xfinity is not blocking port 8080 which displays a "Spectrum Analyzer". The linked RFC explicitly states as much. Other ports forward successfully. I think it was getting interference from 1 to the other also i couldn't find Hello, All of a sudden my xFI Gateway will not connect to my computer via ethernet. After making this change, (I went from 200mbs down to 75mbs down), it seems that the port 25 block has come back. For testing, use a utility like nmap. And it is very easy to unblock. You can also help protect your children while they're online by setting up parental controls. Not sure who they bought their chipset from, but they fail. My router is I'm running a message server on my home computer and recently discovered Comcast was blocking the application from running by blocking the port it uses to communicate. Learn the advantages of xFi. Apr 16, 2020 · When my computer was set up to use standard ports for my work IT department, Comcast refused to assist in blocking unauthorized attempts to connect causing internet slow down, and refused to release my DHCP lease so that I would get a new IP. This article details the process of setting up a firewall for your Xfinity Gateway. At first, I had port 22 and 8123 forwarded successfully, but I was having trouble getting port 80 set up, (the interface kept saying "Alert! Check your fields") so I factory Nobody is ever going to believe me but I have to tell someone - Comcast filtered UDP src port 500 for a couple hours today Jul 24, 2025 · Comcast routers allow you to connect to the internet using a cable or fiber optic connection. Perhaps you need to examine the SIP subpackets a little closer to insure that the presribed implementation ports a being used AND are all correctly opened on the VOIP devices and in the Feb 11, 2017 · Here is a link with details on blocked ports. Thank you. Lastly, when you go to Port Forwarding from the app make sure you use protocol TCP/UDP and a manual set up. We may apply a sending block, which does not interrupt Comcast webmail service. Thanks! Sep 1, 2021 · I have done port forwarding for port 44158 and I still cannot get my miner to come out of being relayed. There are no other ports blocked or reserved by Comcast. Much of the current use of port 25 is by computers that have been infected by malware and are sending spam without the knowledge of Visit https://comca. Rather, it pursues the mutually constructive benefit of using the official SUBMISSION Last year it took hours of troubleshooting and forum reading to find that "advanced security" was turned on by default in an update and that it blocked all port forwarding (despite the site showing that it was added successfully. We are having issues exclusively with our users who have Comcast/Xfinity home internet. I have forwarded ports 80 and 22 to a server on my local network. Due to port block my mail server cannot receive any emails from out side. Follow our step-by-step guide to restrict access and protect your home network from unwanted traffic. We understand why you have blocked the port. I logged into the router and under hardware/LAN Ethernet both ports are showing as "Inactive". Apr 4, 2023 · A few months I had posted here about, and was helped with, getting port 25 unblocked for incoming connections for my IP/account. Advanced Security helps prevent customers from accidentally accessing risky sites, blocks remote access to smart devices from known dangerous sources and monitors network activity in real time to prevent security risks. Either the port forwarding doesn’t work in the XFi app or they are blocking ports. If UPnP is disabled on the router (via Advanced > Device Discover), Port Forwarding becomes required. I know how to set up port forwarding and that's all done. Still Xfinity is blocking all traffic based on the source IP addresses. Dec 3, 2023 · Many firewalls have denial of service and portscan protection. Port 3389 is open on my PC. Nov 26, 2022 · can these ports be opened?It looks like Port 500 and 4500 are blocked by xfinity for residential accounts. Sites that do this are frequently blocked by RBL lists if you are using one of those, or some other net nanny. Aug 23, 2020 · They have also blocked me from connecting to the IP addresses that I used to test port forwarding and those were my work servers. They were blocked there too. Why would this have happened, and how can I make them active again? Also -- the lights on the back of the unit by the ports aren't lighting up at all anymore. Apparently, residential is Xfinity. I opened port forwarding on the IP address of the ADT gat Feb 9, 2025 · How can I actually talk to someone and see if they are blocking Ports or not? Feb 19, 2022 · Hello, @big-DHC. Oct 31, 2023 · However, looking further into this, you are correct about port 25 being blocked. When I'm at my friend's houses (for example) I'm able to connect just fine. Prior to COVID, this request was always solved with just one phone call and the port would be unlocked. Ports on the internet are like virtual passageways where data can travel. Comcast seems to be blocking it. I’ve forwarded ports 22, 443, 44158, and no luck. If you can login to the modem you may be able to do port forwarding, but I have seen a few times where once the modem is online and the config is downloaded, you are not able to change this or the port blocking is done up stream. Ports were open with the original Comcast modem. What kind of error do you see when trying to forward port 443 and 80? Mar 24, 2020 · VPN being blocked I am working from home and trying to connect to work using a SonicWall Netextender VPN. Rebooting the router temporarily fixes the problem. UDP 53, UDP 123, TCP 80, TCP 443, TCP 554. If you would like to set up Outlook 365 you would need to use either port 587 which is a secure port or port 465 as we will not lift the block on port 25 based on the article you sent us for secuirty reasons. Apr 13, 2020 · IP address has not changed and the employee is able to use a hot-spot from his phone to access with NO problem but if he uses his home computer connected through Xfinity home, he is blocked. Oddly, on every other device on the planet, they work. If i use free wifi outside my mail works both ways. I try to navigate to my ip and I get an invalid SSL certificate and the login page for my modem. After a bit of prodding (20-25, 50-55) to see if it was just 22 and 53, I saw TCP ports 21 (ftp), 22 (ssh), 23 (telnet), 24, and 53 (dns) are all blocked, while apparently 25 (smtp) is NOT, even though that's the only one of them on Xfinity's published list of blocked ports. My bobcatminer is relayed all traffic to my miner is blocked stating malicious ip attempts to access my device Feb 27, 2022 · Blocked Services: Click Add and define services and ports to be blocked using Parental Controls. I think my Comcast router is blocking it. Go to the Connect tab. I'm using the router I received from xfinity when I set up my internet. The only issue I see for ASL users is if you use sendmail or other message system utilizing tcp port 25 (system notifications and voicemail to email for me) Which is a issue I have for one server, but there are creative ways around this. Tips to access a blocked device If Advanced Security detects a known threat targeted for the device with Port Forwarding, DMZ settings enabled or UPnP open ports, it will block all traffic coming from its open ports as a measure of protection until the security risk is averted. Has anyone experienced Comcast blocking those ports recently? I have my own modem I've used for years, not the Xfinity one. And it has nothing at all to do with your problem. What is the solution? I tried opening port 3389 put still can't get through I live in Portland, Oregon, and recently switched to Comcast Xfinity (Home) from CenturyLink DSL and found that my VoIP no longer worked. Note: For even more advanced features, visit port forwarding or port triggering Aug 12, 2025 · Xfinity appears to be blocking port-forwarded traffic? I recently made a game server that consists of a login server (port 6000) and a game server (port 8000). This is the standard Xbox suggested ports. I GUARINTEE it. IDENT (port 113) So is that saying the ONLY incoming port that's blocked is 113, and all the other ports are open? Shouldn't all ports Feb 2, 2022 · The use case, server OS, and ftp server software package information would be useful. I'm logged in as my Comcast user and I'm able to browse the internet in general, but it appears they're blocking Wireguard traffic. Ethernet ports die. This will open all ports for that device, so I am trying to forward four different ports on my Xfinity Gateway modem/router to my Raspberry Pi and I am having issues. Sep 6, 2023 · 465 is not deprecated, for example Gmail and Yahoo support it. Sep 15, 2023 · Under Blocked Services, Click Add, and enter services and ports you want blocked. Wired connections are supposed to offer stability and speed, but what do you do when they fail? Don’t worry, we’ve got you covered. com/support/articles/list-of-blocked-ports. Once this occured, we tried for giggles to see if the ports were open when we connected directly to the comcast modem. I am opening ports on my router but they still seem to be blocked by Xfinity. They block ports such as 25 and 80 as well to prevent someone from running a "business service" from their home. ) Those port forwarding rules added last year are working still today, but any attempt to add a new rule = "We're having some trouble" I've tried toggling advanced Sep 11, 2024 · Blocked Port at 51820 My home internet service is somehow blocking my port forward rule of 51820/UDP. Apr 9, 2020 · Switched to Xfinity 2 weeks ago. Anyone know what the deal is? This is on an XB7 Jan 24, 2025 · There were some blocked ports in the firewall settings, namely, Gmail ports 995, and 465, Imap port 993, Pop3 port 110, Pop3s port 995 and SMTP port 25. @XfinityCSAEmail I understand the risks as described in other posts. Comcast offers several different models of routers, including ones that support the latest Wi-Fi standards, advanced security features, and parental controls. This problem is on the LAN side of the gateway. But I am not able to receive anything from these ports. Jun 12, 2019 · Find out which ports are blocked by Xfinity and Comcast services, and why. Don't see how port forwarding is going to help. A lot of people say that with Xfinity rental gear. Aug 27, 2024 · I have a device that remains 'Offline'; it requires Port 80 to be open per the mfr- is port 80 open? Comcast appears to have decided to block my VPN mid morning today. So I've eliminated my computer Jul 2, 2025 · Comcast routers, officially known as Xfinity Gateways, are ubiquitous in residential and small business networks, providing essential connectivity services. Can I use Advanced Security while having port forwarding or DMZ enabled? If Advanced Security detects a known security risk targeted for the device with Port Forwarding, DMZ settings enabled, or UPnP open ports, it will block all traffic coming from its open ports as a measure of protection until the security risk is resolved. I am working with an Xfinity gateway with “Advanced Security” enabled (via the Xfinity app) and a Raspberry Pi running UFW (Uncomplicated Firewall). This week we began blocking the Simple Service Discovery Protocol (SSDP), which uses port 1900/UDP, in our DOCSIS network. Select Apply Changes. I've followed a few steps from the Jan 17, 2020 · The app also alerts me that it is blocking a threat when I try to acess port 8000 from outside the network. If that doesn't work, you can try enabling the DMZ (Demilitarized Zone) feature for the specific device you want to forward ports to. I have called technical support 17 times and have had two techs come to my house. And Even though this new modem/router supports the new upload speed, comcast doesn’t support this modem/router at this speed lol come on. The software update to their routers/modems will not communicate with the series x correctly. I don't think they actually have a human monitoring it. But some ports that I've opened are staying closed and it appears Comcast is just blocking them for some reason. I've even rarely seen unmanaged cheap Ethernet switches The modem probably just got an update is all. Please open the above ports along with I assume you have Comcast residental service, so yes this is pretty common. But forwarding Plex’s default port 32400 from the router to Note: Any ethernet port can be used but only one device can be connected to the gateway while in Bridge Mode. Do you have the Advanced Security option set up for your account? Nov 28, 2019 · The port that you have blocked are industry standards for data transfer We need Port 25 and Port 110 for mail Transfer. I am trying to port forward ports 80 and 443 and it is not working. However, the GP authentication requires port 8443, and this is not compatible with maintaining the highest security firewall settings on my Xfinity Gateway. st/3KcsQI3 or open the Xfinity app and sign in with your Xfinity ID and password. Does Xfinity (Comcast) block Port Scanning? Other than the Port Forward appearing correct in the Xfinity App how can I troubleshoot the connection? Are there other default Ports I can test for and how? I have the XB8 Gateway Mar 14, 2024 · Thanks very much for responding and sharing the Xfinity blocked ports list. Test if port forwarding is correctly setup or if your port is being blocked by your firewall or ISP. It appears that 80 and 22 are being blocked by Comcast or by the router, but I can find no relevant settings to modify. Select Port Forwarding from the menu. I pointed out that it is an Xfinity device and asked who does support it. Anyone using Comcast and found a work around? Yes, I am sure it is Comcast, have turned Mar 22, 2024 · I use GlobalProtect to connect to my employer's network from my home Wifi. They are probably blocking 445 for the same reason and potentially to mitigate against the SMBv1 vulnerability. Has anyone else Aug 29, 2023 · I am trying to setup some port forwarding to allow my PS5 to be accessible remotely from outside my network. For how long? It's up to whatever runs the firewall. In this article I seem to be finding conflicting information on this. The Customized Block Page will only display for HTTP websites, any HTTPS based websites will display a generic This page can't be displayed message. Can an Mar 18, 2023 · Blocked Internet Ports List Find out which ports are blocked by Comcast and why. Every time I connect, therefore, I have to change the Gateway fi Using a VPN connection with Xfinity Internet is just one of the many benefits for Comcast customers. Introduction Find out which ports are blocked by XFINITY and Comcast services, and why. If you hit too many ports rapidly, they block the offending source. He said it wasn't his problem, and that I Coming from a firewall where I had to explicitly allow specific ports and protocols, the descriptions of the Xfi gateway firewall rules are a little confusing to me: Minimum Security (Low) LAN-to-WAN : Allow all. WAN-to-LAN : Block as per below and enable IDS. Port checkers CONFIRM it is being seen. Got an emergency request to Remote Desktop into a server and kaboom, blocked by Xfinity. I have tp-link AX3200. But I just asked the Xfinity Assistant (AI help) and it said that port 80 IS blocked on Xfinity! Why didn't port forwarding work when I changed the port to 31011 rather 80?. Ugh. New comments cannot be posted and votes cannot Jul 2, 2021 · Is anyone aware of a solution to allow FTP file transfer to work again with the new Xfi modem? Every since my upgrade I am unable to transmit files for my website. Heya there! I would like to host my own web server @ home, but apparently my ISP has blocked ports 80 and 443 for incoming… Sep 1, 2015 · This article shows you how to port forward your Comcast router. How does Plex avoid this "helpful" feature from Comcast? Block Page Customization This section provides the ability to customize the browser message received when a user attempts to access a website or page that is blocked by Comcast Business SecurityEdge. Generally from what I remember, that ftp deadlock happens with both sides are firewalled and you can't get to the higher random port. Other ports in the list (not shown) have lots more detail on each line. If i am at home only incomming mail works. This included port 80. I can do a factory-reset that allows me to get to port 80 - but as soon as Xfinity connects to the modem again for the first time, Xfinity blocks port 80 again. All information on the internet passes through ports to get to and from computers and servers. This document offers no recommendation concerning the blocking of SMTP port 25 or similar practices for controlling abuse of the standard anonymous mail transfer port. I did an port test and it says Xbox ports are filtered or closed. Customers may be advised by our Security Assurance team to Sep 24, 2022 · I'm trying to use the Xfinity app to setup multiple port forwards to multiple raspberry pi devices and get the following error, "We're Having Some Trouble Please try again. Can anyone help with unblocking these ports? Mar 11, 2017 · Comcast has started blocking just about all ports in our area. Hi - I have an XFi router. Please unblock the port as soon as possible. They totally suck. Feb 18, 2022 · Ports Blocked, Advanced Security Stuck Good afternoon, I have a generator with a Mobile Link WIFI device connected, the device requires communication with ports 8080, 8081, 443, 123 and 53. Nov 10, 2024 · Blocked internet ports list Find out which ports are blocked by Comcast and why. if i use command at h Mar 22, 2025 · This doesn't work This works Mobile Networks & StarLink Port Forwarding Dynamic IP Addresses Blocked Ports Testing WireGuard Configuration Route all traffic through the tunnel Adjust DNS server The MTU Issue UDP and its pitfalls Why WireGuard? WireGuard is a modern VPN protocol that is at the cutting edge of technology. . My ftp server and raspberry pi are now being rendered useless. Mar 5, 2021 · If you have a Comcast/xfinity modem/router port forward will not do you any good. Feb 2, 2024 · I'm working on a software demo to show some people and I'm running everything locally for now. Archived post. Since I installed and registered my new modem these ports are locked. net. I have it open on my firewall. Jul 2, 2024 · Comcast blocking DNS queries (UDP port 53) from my installation? My commercial account was recently upgraded to another plan. What exactly ports does comcast block on residential accounts? According to what i found on their website they don't block 80 at all but i'm not getting anything outside my house being able to connect to port 80. I think Comcast Business is slightly different. You likely have an issue with your setup. But we need above to run our business smootly. Dec 26, 2023 · Hit too many ports rapidly, the offending source is blocked. Xfinity is not blocking WireGuard. g. " And it turned out to be your router all along. I’m trying to setup direct send or SMTP relay for a Jul 23, 2024 · The Xfinity support page you link also falsely states that the IETF recommends blocking port 25. I saw some older threads about t All Comcast Business Voice, VoiceEdge Select, Trunks (SIP or PRI), and Business VoiceEdge customers will receive a unique account-level Security PIN that is required for managing certain voice features, accessing call detail records, and utilization reports. May 19, 2025 · I can log into Xfinity email on the Xfinity website, that is how I confirmed my password is correct. Dec 13, 2022 · You can try to connect to the ports you think you have a service running on from another box on your network, or use a utility like nmap on another computer to scan the device you have the services running on from your local network. xfinity. Jul 2, 2024 · @user_c8va59 Email is used for important communications and Comcast wants to ensure that these communications are as secure and as private as possible. I removed the router from the connection and directly connected my PC to the modem and tested the ports I am trying to open. comcast. lkywmi iocfvb xmqbqn cparog hgqhdn lzfnj snfhzj oeo qcfxig vlyyf