access-list OUTSIDE extended permit udp host 10.100.100.98 host 192.168.144.15 eq 2055
Replace "OUTSIDE" with the name of the ACL on your outside interface. You may need to do something similar for your inside ACL if you have one. If there's NAT involved, you'll need the appropriate NAT translation too.
I am in the same situation.
I have the ACL in place, but there is something wrong with my NAT I think. When I run a packet trace through ASDM on the ACL configured I get a failure that says "(acl-drop) Flow is Denied by configured rule"
The last step in the packet trace is NAT whish appears with a RED X. This indicates, to me any way, I have a NAT issue.
Any help would be appreciated.