Forwarding

For′ward-ing

,

Noun.

1.

The act of one who forwards; the act or occupation of transmitting merchandise or other property for others.

2.

(Bookbinding)

The process of putting a book into its cover, and making it ready for the finisher.

,

ppr.

Advancing; promoting; aiding in progress; accelerating in growth; sending onwards; transmitting.

forwarding

forwarding ‎(plural forwardings)

The act by which something is forwarded.
- 2005, Daniel J. Barrett, ‎Richard E. Silverman, ‎Robert G. Byrnes, SSH, The Secure Shell: The Definitive Guide
  You might think that the GatewayPorts feature discussed in the last section applies equally well to remote port forwardings. This would make sense as a feature, but as it happens, it isn't done.

The act by which something is forwarded.