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cax80
24 TopicsCAX80 No internet via WIFi but no problem with RJ45
I have problem with both of my Netgear units. This morning i woke-up and my cellphone said no internet via wifi, I checked on computer with wire plug been connected directly to CAX80 and i have no problem connecting to Internet. I also have EAX80 and it also has wifi problems when i connect via WiFi to it that is attached to CAX80 I restarted(FEW) times and factory resetted both units, still same problem. i changed DNS/NTP from Comcast to google and other open-DNS-servers and it didn't help. i callled to Comcast they said not problems at all..... I checked EAX80 via friend house(walking, attaching it his router) and it has no problems at all working and connecting devices via WiFi i connected via app and it shows as i'm working offline(when it's working via wire)309Views1like20CommentsCAX80 v5.1.1.8 Firewall Blocking HTTPS API Traffic - DMZ Confirmed
Hi all, I'm experiencing a firewall bug on my CAX80 (firmware v5.1.1.8) that's blocking HTTPS API calls to legitimate services (specifically api.anthropic.com for Claude AI/Claude Code). Symptoms: API connections consistently fail on home WiFi, while same connections work perfectly on cellular hotspot Issue started intermittently, now persistent Internet speed normal (675 Mbps down / 28.6 Mbps up, Comcast) Extensive troubleshooting completed: Disabled IPv6 (temporarily helped, then broke again) Disabled DoS Protection and Port Scan in WAN Setup Changed DNS to 8.8.8.8 / 8.8.4.4 Tested with VPN (still failed - rules out ISP filtering) DMZ test: Placed computer in Default DMZ Server - API calls work perfectly Conclusion: The DMZ test definitively proves the CAX80's firewall is incorrectly blocking legitimate encrypted API traffic. This is not an ISP, endpoint security, or configuration issue. Questions: Is there firmware beyond v5.1.1.8 that fixes this firewall bug? (Router says no updates available) Are beta firmware versions available for testing? What specific firewall settings should be adjusted beyond disabling DoS/Port Scan? Permanently running in DMZ isn't an option from a security standpoint. My support/warranty expired so I can't contact paid support. Any help/guidance is much appreciated!Solved300Views0likes10CommentsCax80 Astound 1gig plan, intermittent downstream flashing led
Installed a cax80 on Astound/RCN. Ast made the changes, up and running but very frequent drops and dowmstream led flashing. Tech came, found many problems with cables from pole to modem. He changed everything, added a -12 attenuator when done and signal was perfect. His test and router admin page matched, good signal numbers. Still flashing downstream led, off and on, again in a few mins. Latest firmware. My isp does not update the firmware on the cax80. I see lots of code 24,16 in the logs. What can i do? Tech support wont help unless i pay them, a lot. Thanks for any suggestions. I have tried everything i have found. Thought thenewcoax would fix this. It fixed the signal but i still have the issue.299Views0likes22CommentsCAX80 vs CBK752 for Xfinity
As title says, I’m in an unfortunate location where only Xfinity Internet is available with up to 1.2Gbps service being the highest offering. I currently run CAX30 with an EAX80 extender for our single floor 1,300 sq fr apartment. Was wondering if upgrading CAX30 to CAX80 would provide a better performance or would going the Orbi route work CBX752 (essentially a cable modem/wireless router and a satellite) would be the best performing out of the two. If anyone has a real-life experience with either setup, please share it. Thank you!240Views0likes17CommentsUsing Nighthawk web app to turn off wireless radios
I'm trying to turn off the wireless radios on my CAX80 using the Nighthawk web app. The support chat system says I should go to Advanced > Setup > Wireless Setup and then "Uncheck the Enable Wireless Router Radio checkbox for the desired band." However, there is no "Enable Wireless Router Radio" checkbox to uncheck. Can the web app still be used to disable the wireless radios on this model? Web app version is V5.1.1.8.201Views0likes26CommentsEvery month I have to reconfigure the CAX80
Mine is different; every month, the CAX80 internet connection must stop, and then will require a password change. I have been having the same problem for 4 months. Every month I have to reconfigure the CAX80. This month is twice. I am tired. Is frustrating. I have called and spoken with their customer support/ technician unit 4 times, and I still have the same problem every month. The problem is that it has been more than four months since I purchased this CAX80, so I can't return or replace it.200Views0likes2CommentsProblem with port forwarding not working on my CAX80 connected to Xfinity.
I was having the same problem with port forwarding not working on my CAX80 connected to Xfinity. After double and triple checking for errors on my part I checked the web for a solution and found your post. Sure enough, after reverting to FW 2.1.5.2 port forwarding works, and Xfinity breaks it again overnight. It looks like nobody is interested in actually fixing the problem.199Views1like19CommentsCAX80 Firmware Version 5.1.1.8 Stops ALL port forwarding
Xfinity keeps updating my CAX80 firmware to 5.1.1.8, and it destroys all port forwarding ability. This is AFTER a full reset multiple times. I have to re-flash to the 2.1.5.2 firmware and port forwarding works again. Others seem to have the same issues. Is Netgear going to fix this? Or better, how can I stop Xfinity from re-flashing my firmware every few days? Jeff174Views2likes10CommentsNOTICE: CAX80 and Protection Engine
Some users are seeing some issues with WiFi connection problems with the CAX80 gateway modem. Some have noticed that disabling Protection Engine feature has helped resolve some of these issues. NG is aware of this issue and is under review. For now, we recommend disabling Protection Engine until furthur notice: NETGEAR Nighthawk - Protection Engine Feature FAQ | NETGEAR Communities Please be patient while NG works on this. If you continue to see issues or problems after disabling Protection Engine, please make a NEW post and we'll continue to help you out. Thank you.163Views0likes0CommentsCAX80 lights on but no internet
Hello, I’ve checked over everywhere I could find because a few hours ago my lovely CAX80 decided it wanted to start cutting out about every 5-15 minutes. The lights on the device stay on but I get cut out of internet both on wireless and wired connections. The device was purchased in January 2023 so just under 2 years and now I’m pretty sure it’s bricked and I just want to be sure there’s nothing that could be done before I’m forced to buy a new one because it’s out of the one year warranty. ISP is Xfinity I live in an apartment complex but it’s never once been an issue prior. I’ve taken the following steps: -Unplugged the CAX80 -Completely unplugged co-axel, Ethernet plugs, and power while holing reset and re-plugging while reset. -Checked any devices that may have been hung on the device through the app or web page while I was able to access said app or webpage before connection cut out. -Reset the device through the app -Checked firmware updates which is the most current version being 5.1.1.8 -Forced a factory reset through webpage via advanced options and backup erase because the push to reset wouldn’t reset to factory. -After Factory reset made sure the devices cleared and after that re-activated it through xfinity app which took several attempts due to cut outs. -Any basic troubleshooting steps I saw in the chats here on these discussion boards specifically from the guru level reply person FURRye38 including but not limited to checking the channels and making sure they were within acceptable levels, checking the error log so make sure this had nothing to do with my ISP network drops which it did not they’ve have full service all night no drops on the radar in the least, made sure I don’t have protection engine on which I never did in the first place, ect ect. And after all that it still is cutting out every few minutes with the lights still white and glowing on the front, so is there anything I can even still try or maybe something Netgear is aware of that is causing issues? I saw online there have been previous issues with firmware and bricking this specific device before almost identical to my description and that Netgear ended up replacing those devices for a bunch of users but I’m not one to assume my situation is the same so I ask is there anything else troubleshooting wise I should do and if not is this a case I should even get ahold of Netgear support or will I just be told to go buy a new one? I’ll add a photo of the event log errors at the top of the list since it seems I can only add one attachment. Thank You.Solved147Views0likes9Comments