We have office in Ireland, the US and China. We host our ERP system in the Irish office and want to give access to this system to our accounting staff in the China office. We have a 4MB ADSL into the office on Ireland and a 1MB leased line into the office in China. We have tried using the application using a Firewall/VPN in Ireland and VPN client in China but it is too slow.
We got a price from our IPS in China for a IP-VPN but the cost was way too high at about $4,000/month for 512k and $7000 for 1mb.
Can you tell be the best and most cost affective way to network the offices so that we can get much faster access between the offices?