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CAX80 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!Using 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.Problem 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.Issues streaming to twitch, using video chat is discord or anything that requires high upload
Suddenly after rebuilding some cables and attempted to set up another router for more wifi coverage my CAX80 is having issues with uploading things for video chats or when streaming. Anyone know where I can look to try and fix this? I upgraded to latest firmware but otherwise nothing else changed.Hardwired connections are fine. WiFi bounces up and down
My CAX80 has the same issue. hardwired connections are fine. WiFi bounces up and down. I tired to change a variety of settings but the save default back to factory. Is there a physical jumper and switch to enable changes to the router? Since its a WiFi only issue the issue is in the Netgear settings or bad hardware. the updates are current. bug in the Netgear WiFi software? My test connection is 2 feet away from router. any ideas? If Netgear support is online here, help.
CAX80 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)