Mitm Proxy (Man In The Middle Proxy) Doubts

Dear IPVM community,

Need you you suggestion..... I have some experimental setup in a research lab where a many IP cameras (few different brand/ model) port forwarded to public static cloud IP's ( like AWS). Between the IP camera and cloud machine, there is Ubuntu virtual machine which running the MITM (Man In The Middle) proxy for reverse tunneling traffic using ssh. ( Please refer attached pic)Setup

Now the problem is : Camera web access page (after login as ADMIN) on the Firebox browser from Windows 7 laptop, did not show the video. It just show blank screen only (after correct plug-in installed). All other settings page works 100 %.

i.e: 1. Virtual Server / Virtual Machine (Ubuntu) : 192.168.1.81:8080 - no video not shown. all other access are working.

2. Public ip 139.162.13.15:8080 -no video not shown. all other access are working.

3. from local ip 192.168.1.122:81 - yes, it works as expected in the same Firefox browser from my laptop.

MitM proxy correctly configured and forward all the traffic to and from AWS cloud server. Not sure, why i can not see video,

I am using D-link, Hikvison and other cameras... all have same issue: No video.

For trouble shooting, i have captured the network traffic using Wireshark running on my laptop( pcap file). one with video (local ip) and without video (virtual server). Trying to find the what the key difference between pcap files. No clue... Not sure, what exactly look for in pcap file.. :(

Any suggestions welcome.. Thanks a lot.

-Cheers!

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