securing rdp by connecting host names (ddns clients)

i configure ddns host names finding , connecting various terminal servers (example i'll rdp computer name server.text.com).  wondering if create layer of security on terminal server side, allowing connections ddns domain host.  currently, can done ip address, idea laptop updates ddns upon arrival new network; , recognized terminal servers bob.test.com , allowed connect accordingly.  idea's how go this.  thing i've seen behave when 1 configures router vpn tunnels (site site) using domain names instead of ip addresses.

hi,

for issue, can add rd gateway cap control can connect rds server:

create rd cap

http://technet.microsoft.com/en-us/library/cc753324.aspx

rds: rd gateway server must have @ least 1 rd cap enabled

http://technet.microsoft.com/en-us/library/dd320332(v=ws.10).aspx

remote desktop gateway

http://technet.microsoft.com/en-us/library/dd560672(v=ws.10).aspx

thanks,

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Windows Server  >  Remote Desktop Services (Terminal Services)