Hi We have four offices three are using Vigor 2800 routers. I can ping every computer in all three Vigor 2800 offices from any computer in the three offices. The fourth office is a draytek 2820. i have setup VPN between it an the head office (vigor 2800). from the 2820 router i can ping the head ofiice router(vigor 2800) ONLY and from the head office router (2800) i can ping the 2820 router ONLY HOWEVER I Cannot PING any computer behind the 2820 router even when it is directly connected to the (vigor 2820) router. Does anyone have a clue as to why this is happening and what i can do to sort it out?