Patent ID: 11909712
Assignee: GOOGLE LLC
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 17:
18. A system comprising:
data processing hardware; and
memory hardware in communication with the data processing hardware, the memory hardware storing instructions that when executed on the data processing hardware cause the data processing hardware to perform operations comprising:
receiving, at a gateway associated with a virtual private network, a packet from a first virtual machine executing on a host machine of the virtual private network, the packet comprising:
a source internet protocol (IP) address assigned to the first virtual machine;
a source port of the host machine assigned to the first virtual machine;
a destination IP address; and
a destination port;

determining that the packet is intended for a client external to the virtual private network, the client associated with the destination IP address and the destination port;
based on the determination that the packet is intended for the client external to the virtual private network, modifying the source IP address of the packet from the source IP address assigned to the first virtual machine to a respective IP address assigned to the gateway; and
communicating the packet to the destination IP address of the client external to the virtual private network;
wherein:
the client comprises a second virtual machine;
the operations further comprise, requesting a token from a registry service, the token used to establish a unidirectional virtual network pair from the first virtual machine to the second virtual machine; and
the packet is a User Datagram Protocol (UDP) packet comprising a return virtual network pair token for unidirectional communication from the second virtual machine to the first virtual machine.