Patent ID: 11916957
Assignee: AIRGAP NETWORKS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A method for providing ransomware protection in a Virtual Local Area Network (VLAN) network, comprising:
relaying, by a security appliance having a Dynamic Host Configuration Protocol (DHCP) relay function, DHCP requests from a plurality of endpoint devices to a DHCP server, the security appliance further overwriting a subnet mask of responses to the DHCP server to 255.255.255.255 to set the security appliance as a default gateway for the plurality of endpoint devices of the VLAN network;
monitoring, by the security appliance, intra-VLAN communication between the plurality of endpoint devices of the VLAN network; and
policing, by the security appliance, DHCP address assignments of endpoint devices.