Hi,
The easiest way to check this situatin would naturally be to see your configurations.
I would suggest trying the actual connection and monitoring it through the ASDM Monitor section and see what happens to the connection. Is it getting blocked? Does it get through but gets SYN Timeout or perhaps something else?
I guess there are softwares you could use to determine if a certain port is open all the way. But I'd imagine if you are using a firewall in between there should be no other networking device preventing this connection (unless there are several firewalls in between)
On newer softwares of ASA you could use "ping tcp" command to test if a certain TCP port is listening on a host or just otherwise reachable directly from the ASA firewall.
- Jouni
