Description: The IPSec transport mode is a method for securing IP packets by encrypting only the payload and not the header. This means that, unlike tunnel mode, where the entire IP packet is encrypted, in transport mode only the information being transmitted is protected, allowing the original header to remain intact. This feature is particularly useful in situations where intermediate devices, such as routers and switches, need to read the header for proper traffic routing. Transport mode is commonly used in network connections between two hosts, where the security of communication is essential, but header visibility is also important. Additionally, this mode allows for greater efficiency in bandwidth usage, as the amount of encrypted data is reduced. In terms of implementation, IPSec transport mode relies on security protocols that ensure the confidentiality, integrity, and authentication of data, making it a popular choice for applications requiring secure communications, such as remote access to networks and the transmission of sensitive data.
