Checksumming is the process by which a quantity is calculated based on the contents of a message. The sender of the message calculates the checksum. The value of the checksum is included as part of the message packet. The recipient of the message re-computes the checksum of the message upon receipt. The two checksum values must match if the message is to be considered unaltered during transit.
To configure checksumming:
Accepted
| Service will be active if the other side of the connection specifies either
"required" or "requested", and there is a compatible algorithm available on the
other side; it will otherwise be inactive.
|
Rejected
| Service must not be active, and the connection will fail if the other side
specifies "required".
|
Requested
| Service will be active if the other side of the connection specifies either
"accepted", "required", or "requested", and there is a compatible algorithm
available on the other side; it will otherwise be inactive.
|
Required
| Service must be active, and the connection will fail if the other side
specifies "rejected", or if there is no compatible algorithm on the other side.
|