Need to allow access to DVR in the WAN network to LAN computers
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Filtering on that IP is not going to give us any multicast that might be going on or any layer 2 that might be going on..
Capture without any filters…
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If he's filtering on the DVR's IP address (or MAC), as I suggested, it will show multicast traffic from the DVR. Multicast is sent to an address in the multicast range, but the source is always the devices IP address. In the capture, I saw a single multicast frame from the DVR.
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Exactly but you wouldn't see any multicast from the client because he was filtering on the dvr IP.
Not sure why this is even an issue.. Why are you trying to put stuff on pfsense wan network? Just put all your devices on the same layer 2. Move the devices that are currently in front of pfsense to behind pfsense so it goes
isp device - pfsense - all your stuff.
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Why would there be any multicast from the client? It doesn't normally send out multicast traffic, but may communicate with the server via it's unicast address. In IPv6, multicast is used for a lot more than in IPv4, for things like router solicitation and more. There is also an all nodes multicast, which replaces the IPv4 broadcast.
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Do you know how this client talks to the dvr? All I see in the sniff that works is a query via port 99 that is just html with a bunch of info.. Lets get a sniff on the same layer 2 without any filtering on the capature.. And actually see start of transfer of video.
In the sniffs we have seen. There was a query from the client to port 99, and lots of stuff sent back via html. In the client that doesn't work never see that syn to dvr IP on 99.. But yes I agree in the 2nd sniff there was 1 multicast thing put out by the dvr. maybe there is something else being sent out from the client IP that we are missing?
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From the payload of the capture there is a line about the type of DVR.
The attachment is for that DVR.
In there it says it uses something called QCIF network transfer. I dont know what that is but maybe you know what is that.
I look for it in Google but I did not see the relevance with networking.
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I am having difficulties to do the new capture, the Owner has not being available.
I hope that by tomorrow I can get the capture.
Sorry for the delay. -
Finally.
Here is the link to the wireshark capture with no filter:
https://drive.google.com/file/d/0B5nlqqyTt-Vtc0N5bGJISXB6MlE/view?usp=sharing
This is a big file because the computer gets really slow when the app plays the streaming and to close the app the system takes much time.
As soon the app closes I stopped the capture.
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I did a capture within the pfsense network but this time I set the detail to full and unlimited lines instead of 100.
And set to listen on WAN interface. -
Capture but on LAN interface with unlimited lines
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When you try with Wireshark on that computer, you probably want to use a capture filter to limit what you have to sort through. When you start Wireshark, double click on the interface. Then in the capture filter box enter host <ip address="" of="" the="" dvr="">, click on OK and then on Start. You'll then see packets to or from the PVR. Multicast addresses are within the range of 224.0.0.0 to 239.255.255.255. Any multicast packets, from the PVR will have a destination address within that range and whatever it's IP address is for the source.</ip>
I look for the multicast address as 224.0.0.0 to 239.255.255.255 but did not found any, so I guess there are no multicast transmissions. The problem seems to be other thing.
I really tried to saw in the captures a difference between a good connection and a bad connection but I could not. I do not have enough knowledge for this. -
I think that the problem was fixed and did not realized it. I was barking to the wrong tree.
On Windows 7 clients the iWatch application showed the stream successfully. It seems, do not know why, the iWatch application app fails to run correctly on Windows Servers. I was doing my tests on the Server. I think the clients got fixed when I disable one of the WAN default Firewall rules (Block to private subnets).
