Blocking DHCP port

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Jonathan Phan

• November 21, 2022 16:26

Is there a way that I can disallow newly connected WIFI devices from obtaining an IP address from my DHCP server?

Currently have the QUARANTINE group feature enabled; hence, all inbound/outbound network traffic is blocked until I release the device from QUARANTINE group.  However, my Firewalla discovers several devices and place them in QUARANTINE group, but when I try to figure out the origin of these devices, I cannot find them on my list of devices.

Please advise...

 

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  Firewalla

  • November 21, 2022 19:09

  This may be a new feature request. Is your problem not able to find the device, or what it is?

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  Jonathan Phan

  • November 22, 2022 13:27

  The problem that I have is I have unknown devices are connected to my WIFI network.  The firewall is doing a good job of blocking them from access local network and Internet.  However, it does not block new devices from obtaining an IP address from my DHCP server (which is a Windows Server).

  I believe that I should be able to create a group and members of this group cannot obtain an IP address from DHCP server.  I tried several things, including create a rule which prevent all traffic to/from the DHCP server but it does not work.

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  Bob O'Hara

  • November 22, 2022 18:43
  • Edited

  Do you have an open WiFi network that these unknown devices are joining? Or are these unknown devices using randomized MAC addresses and only appear to be unknown as they join your WPA2-protected WiFi network?

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