This message was received on December 8, 2000 From: Markus Levlin In order to allow the widest possible use of NAT traversal technology, SSH Communications Security Corp presents the following statement regarding its patents and patent applications relating to NAT traversal. SSH Communications Security Corp hereby makes it known that it will not assert any claims in any patents issued in any country based on - the Finnish patent application FI974665 or any patent application listing the same as a priority application; or - the US patent application 09/333,829 or any patent application listing the same as a priority application, against any party that makes, uses, sells, imports, or offers for sale a conforming implementation of an IETF standards-track specification of an IPSec NAT traversal module. This statement is limited in that SSH Communications Security Corp does not give any rights to incorporate NAT traversal technology covered by patents of SSH Communications Security Corp in implementations for any other protocols other than the IETF standards-track IPSec protocols. This statement is limited in that SSH Communications Security Corp retains the right to assert said patents against any party and any subsidiary of a party that asserts a patent it owns or controls, either directly or indirectly, against SSH Communications Security Corp or any of its subsidiaries or successors in title for any implementation of or operation of any software or system implementing technology specified by the IETF. SSH Communications Security Corp also retains the right to claim damages for any prior use by such a party of NAT traversal technology covered by patents of SSH Communications Security Corp. For a written agreement confirming this statement contact Intellectual Property Rights Manager SSH Communications Security Corp Fredrikinkatu 42 00100 Helsinki Finland