Enable the IPv6 firewall on your modem

Activating the IPv6 firewall in your modem's advanced settings is optional. When the firewall is activated, security on your network is enhanced, but some network functionality will be lost.
Modem Advanced Step 1-4

1.  Connect a device, such as a computer or tablet, to the internet through WiFi or using an Ethernet cable connected to your modem.

2.  Open a web browser and type into the web address field.

3.  Log in to the modem's online user interface (Modem GUI) using your Administrator Username and Administrator Password. Unless you have changed the default settings, you can find this information on the modem's sticker. Note that these are different from your wireless SSID and security key.

4.  Select "Advanced Setup."

5.  Select "IPv6 Firewall" in the left sidebar. 

6.  Follow the steps to set up the IPv6 firewall:

  • Step 1:  Enable/Disable stealth mode. Do not enable stealth mode unless you fully understand the impact.
  • Step 2:  Enable the firewall.
  • Step 3:  Choose to allow/block incoming and outgoing traffic on the network.
  • Step 4:  Click "Apply" to save your changes.
About "Stealth Mode": Stealth mode prevents the router from responding to probing requests. The router will still answer incoming requests for authorized apps. Unexpected requests, such as ICMP (ping) are ignored. Do not enable Stealth Mode unless you understand the technical impacts.
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