ASA5520 running in 8.4(4)1
A win2012R2 server can be reached by windows remote desktop in Lan. Using Static NAT it outside and permit port in ACL. Telnet can access the server RD port at 3389 but windows RD doesn't work from internet. What's wrong with it? Who can kindly help me? Thanks!
Since we do not see the Logs what is wrong to confirm,
can you post the Logs while you connecting from outside to inside RDP Server.
post configuraiton also.
here is the snippet to work.
object service RDP
service tcp source eq 3389
object network inside-host
nat (inside,outside) source static inside-host interface service RDP RDP