Glad to hear you got it working. Feel free to make a tutorial as it might help someone in the future.
Question: When you say you couldn't access the web interface with the ES version of firmware... are you seeing a white page with the video and an option to update the firmware? If so, that is the version from D-Link. Because the camera was meant for the SAGE Home Automation System, D-Link did not include their standard web gui interface in the firmware they released and/or they only released a version with the parts that are licensed under GPL.
For clarity:
1) Other versions of firmware for the 2132L camera don't work because the flash map is different for the ES cameras. Basically the ES camera uses a different part of memory to load the operating system.
2) The SAGE product was only offered in the US as SAGE/ES cameras were designed to be used with Dish TV. There is no strange firewall on the camera. Also, just read an ebay review online about how they were not offered in the US and Dlink "region locks" their devices. Very funny but very untrue with this camera. The reason it cannot connect to the MyDlink service is it was never assigned a MyDlink number. If you look at the non ES version it will have a MyDlink number on the sticker on the back of the camera ... the ES versions don't have the MyDlink number
3) arp -a : This is a command run from a Windows command line. It will show the mapping of MAC address to IP address. A MAC address is a unique set of numbers and characters (hex) assigned to a network adapter. The MAC address for the camera should be on the back. We do this to find the IP address so we can connect to the camera since it is set up to acquire the IP address by DHCP.
More info here:
https://en.wikipedia.org/wiki/MAC_address Ex:
C:\WINDOWS\system32>arp -a
Interface: 10.0.0.2 -
Internet Address Physical Address Type
10.0.0.100 03-4a-11-9f-f1-7d dynamic