Equipment (Modems,Gateways)
Modems, Gateways, and Networking Devices
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Visitor

How do I unblock a mac address automatically blocked by the modem's firewall?

I have the standard comcast business modem. I tried to use "Device Control Management > Managed Devices" to block one of my devices from connecting to WiFi from midnight to 6am. That worked, but during that time the device tried to reconnect >1000 times, which resulted in that device being blocked by the modem's firewall, and now the device can no longer connect to WiFi. This pesists is despite me removing that device from the list of blocked devices in "Device Control Management > Managed Devices" and restarting the modem. Trying to temporarily disable the the firewall with "Gateway > Firewall > IPv4 > Custom Security > Disable entire firewall" also had no effect.

 

"Troubleshooting > Logs > Firewall Logs" contains the line (MAC address hidden for privacy)

 

Device MAC:XX:XX:XX:XX:XX:XX, 1991 Attempts  2020/6/23 04:58:01 Device Blocked

 

I'd like to be able to connect my device to WiFi again. How can I do that?

 

Thanks!

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Visitor

Re: How do I unblock a mac address automatically blocked by the modem's firewall?

The problem now is solved here's what I tried:

  • Factory reset of the modem, the device still couldn't connect.
  • Reset of all network setting on my device, the device still couldn't connect.
  • Restarting my device, the device can now connect.

I'm not sure which of these steps were necessary and which were not, so I've listed all of them in case this helps others with a similar problem in the future.

 

 

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Official Employee

Re: How do I unblock a mac address automatically blocked by the modem's firewall?

Hi there, thanks so much for taking the time to reach out to the Digital Care Team here through the forums and we are sorry for the delayed response. Thank you for trying a few troubleshooting steps and you have reached the right team to help make sure we address all of your concerns with unblocking a mac address automatically. Can you please send us a private message with your name, the full address, and the account number? 

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Highlighted
Visitor

Re: How do I unblock a mac address automatically blocked by the modem's firewall?

The problem now is solved here's what I tried:

  • Factory reset of the modem, the device still couldn't connect.
  • Reset of all network setting on my device, the device still couldn't connect.
  • Restarting my device, the device can now connect.

I'm not sure which of these steps were necessary and which were not, so I've listed all of them in case this helps others with a similar problem in the future.

 

 

View solution in original post

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Official Employee

Re: How do I unblock a mac address automatically blocked by the modem's firewall?

Fantastic! I truly apologize for the delay. Thanks for providing all of this information as it will help not only our valued customers, but our ability to assist more efficiently. We can't thank you enough for your time and willingness to work with us. While I have you, is there anything else we can address for you regarding your account? 

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