Found the loop hole for this, the server isn't free. Your allowed to download a "test" server, which exactly according to the website be run though them and they have full control. so basicly it isn't legal to host a playable private server for lineage2 server. As the Terms of use says. So unless you are running your test server for them, lineage2.com does not offer you a full game server for legal play.
7. OFFICIAL SERVICE
NC Interactive has designed Lineage II for play only as offered by NC Interactive at the Web Site. You agree to play Lineage II only as offered by NC Interactive at the Web Site and not through any other means. You agree not to use any hardware or software, including but not limited to third party tools, or any other method of support which may in any way influence or advantage your use of the Service which is not authorized by NC Interactive, including but not limited to the use of ‘bots’ and/or any other method by which the Service may be played automatically without human input. You further agree not to create or provide any other means through which Lineage II may be played by others, as through server emulators. You acknowledge that you do not have the right to create, publish, distribute, create derivative works from or use any software programs, utilities, applications, emulators or tools derived from or created for Lineage II, except that you may use the Software to the extent expressly permitted by this Agreement. You may not take any action which imposes an unreasonable or disproportionately large load on our infrastructure. You may not sell or auction any Lineage II accounts, characters, items, coin or copyrighted material.