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Every once in a while (last occurrence was Oct 2019) I cannot connect to my Comcast BusinessClass IP address from my Comcast Xfinity residential site.
From the Xfinity gateway (admin tools) to the BusinessClass IP: PING succeeds TRACERT fails
From two different Windows PCs connected via the Xfinity gateway to the BusinessClass IP: PING fails TRACERT succeeds HTTP/HTTPS connection fails (times out)
Using cellular Wifi hotspot to the BusinessClass IP: PING succeeds TRACERT succeeds HTTP/HTTPS connection succeeds
Users from other locations (not on Comcast) to the BusinessClass IP: PING succeeds TRACERT succeeds HTTP/HTTPS connection succeeds
What can I do to diagnose and fix what's going on?
Xfinity Gateway is a Technicolor CGM4140COM. It has been rebooted three times by either unplugging for at least 2 minutes, or by using "Restart Modem" option on Xfinity web-site.
Last time (four months ago) Comcast tier 2 support was able to resolve the issue but the final solution is unknown because the call dropped midway through and the tech didn't notate the account. The gateway was sent a reprovision signal then, but when done this time, it didn't solve the issue.
Any ideas are welcome. Thanks!
MJA
Posted 2020-01-16T07:18:43.513
Reputation: 1
With the use of an xfinity router, I assume it may have the xFi firewall/filter enabled. This blocks traffic that is perceived as unusual for home networks. You should look into that. – Ecstasy – 2020-01-30T15:56:32.223