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There's no firewall at the other side. It's a provider-based MPLS network. They are taking forever getting back to me and this case is preventing me asking other questions so I'd like to close it.
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No further troubleshooting possible as of right now.
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I have an ASA 5505 at 192.168.1.252. There's a provider managed MPLS router at 192.168.1.1. A host at 192.168.4.17, across the MPLS, has a cam system at port 8000.<br />
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From the 192.168.1.0 subnet I can reach 192.168.4.17:8000. I added PAT on the ASA for this port, and PAT works fine for hosts on the 192.168.1.0 subnet. There is a route on the ASA to the 4. subnet. There is an access-list assigned to NAT (inside) 0:<br />
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access-list nat0_acl extended permit ip 192.168.1.0 255.255.25.0 192.168.4.0 255.255.255.0<br />
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So, I know the port traffic is already traversing the MPLS. Does anyone know how I pass through the port forward from the ASA through to the other side of the MPLS?
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I have an ASA 5505 at 192.168.1.252. There's a provider managed MPLS router at 192.168.1.1. A host at 192.168.4.17, across the MPLS, has a cam system at port 8000.

From the 192.168.1.0 subnet I can reach 192.168.4.17:8000. I added PAT on the ASA for this port, and PAT works fine for hosts on the 192.168.1.0 subnet. There is a route on the ASA to the 4. subnet. There is an access-list assigned to NAT (inside) 0:

access-list nat0_acl extended permit ip 192.168.1.0 255.255.25.0 192.168.4.0 255.255.255.0

So, I know the port traffic is already traversing the MPLS. Does anyone know how I pass through the port forward from the ASA through to the other side of the MPLS?

Port forward across MPLS?

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).

Cisco

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.