Authentication procedure in a virtual private network

A device, comprising:

• a memory;
• and
• a processor communicatively coupled to the memory, the memory and the processor being configured to:
• configure the first server in a virtual private network (VPN) environment to provide VPN services to a user device and to determine an encrypted authentication packet based at least in part on utilizing an encryption key, a nonce, and an encryption algorithm, wherein, to configure the first server to determine the encrypted authentication packet, the memory and the processor are configured to,
• configure the first server to determine a crypted code field to indicate a type, from among a plurality of types, associated with the encrypted authentication packet and that at least a portion of the encrypted authentication packet is encrypted, and
• configure the first server to determine a crypted payload based at least in part on encrypting an entire initial authentication packet, which includes a payload field containing authentication information associated with the user device requesting the VPN services from the first server;
• configure the first server to transmit, to a second server, the encrypted authentication packet to enable the first server and the second server to conduct an authentication process to authenticate the user device;
• and
• configure the first server to receive, from the second server, a response indicating successful authentication of the user device, unsuccessful authentication of the user device, or a request for additional information from the first server.

A non-transitory computer-readable medium configured to store instructions, which when executed by a processor associated with a device, configure the processor to:

• configure a first server in a virtual private network (VPN) environment to provide VPN services to a user device and to determine an encrypted authentication packet based at least in part on utilizing an encryption key, a nonce, and an encryption algorithm, wherein, to configure the first server to determine the encrypted authentication packet, the processor is configured to,
• configure the first server to determine a crypted code field to indicate a type, from among a plurality of types, associated with the encrypted authentication packet and that at least a portion of the encrypted authentication packet is encrypted, and
• configure the first server to determine a crypted payload based at least in part on encrypting an entire initial authentication packet, which includes a payload field containing authentication information associated with the user device requesting the VPN services from the first server;
• configure the first server to transmit, to a second server, the encrypted authentication packet to enable the first server and the second server to conduct an authentication process to authenticate the user device;
• and
• configure the first server to receive, from the second server, a response indicating successful authentication of the user device, unsuccessful authentication of the user device, or a request for additional information from the first server.