Bupa (pronounced /buËpÉ/) is an international healthcare group, with its origins and headquarters in the United Kingdom but now serving 32 million customers in 190 countries. It is a not-for-profit private healthcare company, as opposed to the UK's National Health Service (NHS), which is a tax-funded healthcare system.
IPsec is an end-to-end security scheme operating in the Internet Layer of the Internet Protocol Suite, while some other Internet security systems in widespread use, such as Transport Layer Security (TLS) and Secure Shell (SSH), operate in the upper layers at the Transport Layer (TLS) and the Application layer (SSH).
Between MACsec-capable devices, packets are encrypted on egress from the sending device, decrypted on ingress to the receiving device, and in the clear within the devices. This feature is only available between 802.1AE-capable devices.ink layer security can include both packet authentication between switches and MACsec encryption between switches (encryption is optional). Note MACsec is supported on the Catalyst 4500 series switch universal k9 image. It is not supported with the NPE license or with a LAN Base service image.