Dynamic UDP port assignment 1

[PronetSolutions]

Good Day All,
Does anyone have proven experience working with Client-Server applications which require dynamic UDP Port assignments where the Server is internal and the client is External?

My particular application (remote client) will call the (internal) server on a static port. However, the server responds on a server assigned port ranging from UDP port 1024-65535.

I tried
Static (inside,outside) UDP 1.2.3.4 1024-65535 4.3.2.1 1024-65535 netmask 255.255.255.255 0 0
I get invalid port message

I have also tried
access-list in permit UDP any host 1.2.3.4 eq 1024-65535
same error

Anybody know how to accomplish this rule???

Much appreciated,
PNS

 

[ststokes]

You can configure that using Pix Object Groups. With them you can configure a range of ports that can be allowed.

http://www.cisco.com/warp/public/707/pix_obj_grp.html

Scott