Cisco ASA5520 - RDP to a server on another port

I have a static NAT configured with port 81 open.

static (inside,outside) 1.1.1.1 10.9.0.20 netmask 255.255.255.255
access-list Outside_access_in extended permit tcp any host 1.1.1.1 eq 81
access-group Outside_access_in in interface outside

Now if I open remote desktop, and try to RDP to this server on port 81 like below, it doesn't work.

1.1.1.1:81

If I open port 3389, it of course works.  Is there a reason why I can't RDP to a server on another port.  Has anyone ever experienced this?  It works for me on other ASA's I have configured at other locations.

Its a windows server 2008 R2 server that I am trying to RDP too
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denver218Asked:
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Ernie BeekConnect With a Mentor ExpertCommented:
Or do you want to change the port RDP listens on?

http://support.microsoft.com/kb/306759/en
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Ernie BeekExpertCommented:
Did you try PAT?

static (inside,outside) tcp 1.1.1.1 81 10.9.0.20 3389 netmask 255.255.255.255
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denver218Author Commented:
I changed the port RDP listened on and it worked.  Thanks.
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