I have a number of customers that have Windows SBS 2011 in their offices but also have remote offices with 1 or 2 users who are on the SBS domain, there is a site-site (ipsec tunnel) vpn between the sites using cisco 877 routers. At the moment the 877s (remote sites only) are handing out DHCP addresses to the clients which have dns servers as first ip address of SBS box and second as own ip address.
This works ok as the remote clients can access all resources on the SBS box, but what it does mean is that every other lookup is also having to go accros the WAN (VPN), thus making internet browsing slower than it really needs to be.
What I would like to know is if it is possible to make the remote clients use the 877s as DNS servers and in turn make the 877s lookup anything for the SBS to the SBS box and any other request to the ISPs name servers?
Any pointers or links would be great.
Cheers
