D-Link DSR-150N DSR-150 User Manual - Page 122

Unified Services Router User Manual W ith a configured RADIUS s erver, the router connects to a RADIUS s erver and p as s es t o it t h e credent ials t h at it receiv es fro m t h e VPN clien t . Yo u can s ecu re t h e connection between the router and the RADIUS s erver with the authenticat ion protocol s upported by the s erver (PAP or CHAP). For RADIUS - PAP, the router firs t checks in the user database to s ee if the us er credentials are available; if they are not, the router connects to the RADIUS s erver. 6.2.2 Internet ov er IPSec tunnel In t h is feat u re all t h e t raffic will p as s t h rou gh t h e VPN Tu n n el an d fro m t h e Remo t e Gat eway t h e p acket will b e ro u t ed t o In t ern et . On t h e remo t e g at eway s id e, t h e outgoing packet will be SNAT'ed. 6.3 Configuring VPN clients Remo t e VPN clien t s mu s t b e co nfig u red wit h t h e s ame VPN p o licy p aramet ers used in t h e VPN t u n n el t h at t h e clien t wis h es t o u se: en crypt io n, au thent icat ion , life t ime, an d PFS key -g ro u p . Up o n es t ab lis h in g t h es e au t h en t icat io n p aramet ers , t h e VPN Clien t u s er d at ab a s e mu s t als o b e p o p u lat ed wit h an acco u n t t o g iv e a u s er acces s t o t h e t u n n e l.  VPN clien t s o ft ware is req uired t o es t ab lis h a VPN t u n n el b et ween t h e ro u t er an d remo t e en d p o in t. Op en so urce s o ftware (s uch as Op en VPN o r Op en s wan ) as well as M icro s o ft IPs ec VPN s o ft ware can b e co n fig u red wit h t h e req u ired IKE p o licy p aramet ers t o est ab lish an IPs ec VPN t u n n el. Refer t o t h e clien t s o ft ware g u id e fo r detailed ins tructions on s etup as well as the router's online help. Th e u s er d at abase co nt ain s t he lis t o f VPN u s er acco un ts t h at are au t h o rized t o u s e a g iv en VPN t u n n el. A lt ern at iv ely VPN t u n n el u s ers can b e au t h en t icat ed u s in g a co n fig u red Rad iu s d at ab ase. Refer t o t h e o nlin e h elp t o d et ermin e h o w t o p o pu late the us er databas e and/or configure RADIUS authenticat ion. 6.4 PPTP / L2TP Tunnels Th is ro u t er s up port s VPN t u n n els fro m eit h er PPTP o r L2TP ISP s erv ers . Th e ro u t er acts as a broker device to allow the ISP's s erver to create a TCP control connection b et ween t h e LA N VPN clien t an d t h e VPN s erv er. 6.4.1 PPTP Tunnel Support Setup > VPN Settings > PPTP > PPTP Client PPTP VPN Clien t can b e co n fig u red o n t h is ro u ter. Us in g t h is clien t we can acces s remo t e n et wo rk wh ich is lo cal t o PPTP s erv er. On ce clien t is en ab led , t h e u s er can acces s Sta tus > Active VPNs p ag e an d es t ab lis h PPTP VPN t u n n el clickin g Connect. To dis connect the tunnel, click Drop. 120