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Xfinity Technicolor Cable Modem/Router Firewall Issues
Over the last month my Xfinity router periodically goes offline. The system was working great for months and then I started experiencing periodic downtime.
Upon investigation, I noticed the following firewall log entries:
FW.IPv6 INPUT drop , 80 Attempts, 2021/6/5 07:42:47 Firewall Blocked
FW.LAN2SELF DROP , 19 Attempts, 2021/6/5 07:42:47Firewall Blocked
FW.IPv6 FORWARD drop , 11 Attempts, 2021/6/5 02:58:02
During these events, the device goes offline then will come back online eventually.
I've switched devices with Xfinity to determine if the device was the issue. Unfortunately, the new device has the same issue.
So far, I've disabled the integrated firewall, disabled upnp, and turned off IPv6 on all my PCs. Same issue still occurs.
My configuration is the following:
XFINITY Router/Modem --> VPN Appliance --> Google Mesh Router
I've also enabled bridge mode on the XFINITY device. Same issues occur.
I've been using the same hardware, cables, connectors, etc. for months prior before this started happening. Essentially, nothing was changed.
There are several support entries at Xfinity on this issue, but very little around resolutions.
Any input will greatly be appreciated!