Trouble Accessing Cams via Web Interface

B

BCMguy

Getting the hang of it
Oct 12, 2017
44
27
Hello,

I have a variety of EmpireTech Dahua cameras. They all live on a separate camera VLAN with a rule in place to allow Primary network devices to access the Camera VLAN/IPs. I am able to access the web GUI for 4 of my 7 cameras, however "the connection times out" on the other three when trying to access via a web browser using the assigned camera IP address.

Any idea why this might be?

I previously used BlueIris with the BI PC living on the Camera VLAN. Using that PC I was able to access the Web GUI for all the cameras without issue... If it helps at all, the cameras I cannot reach are 2 Dahua boobie cams and one 5442-AS-3.6.

Any thoughts on what configuration would be preventing access on these three, but not the others? I'm currently using a Unifi NVR living on the primary network/VLAN and it can also see the 4 cameras, but not the 3 I cannot access.

Any and all ideas are appreciated! Thank you!
 
Has this worked in the past and now doesn't or are you setting up new cameras?

It sounds like a VLAN rule issue or maybe the cameras are not receiving power or the firmware corrupted and the IP addresses changed.

Are you able to use FING are ARP or Unifi or some other command to confirm all those cameras are showing up in your network?
 
I was never able to access those 3 cameras off the VLAN camera network via the web GUI, however for devices on the same VLAN I was able to get access.

All 3 do show up as active in my Unifi controller and are functional. They were running fine when I took my BI PC offfline for replacement.

It does look like a VLAN rule issue, but these 3 IP address are right in the middle of the range I use, they are all listed in a pfSense Alias, and all share the same rules.

I'm really scratching my head on this one...
 
OK, this sounds silly, but you would be surprised how many times this resolves the issue when someone provides the network topology of their system.

More than likely you have a duplicate IP or transposed a number either in the IP address or the gateway.

What is the IP address of each camera and each device on that subnet?

Go the command prompt and type in "arp -a" and see if it matches what you wrote down. I suspect these two cameras don't show up. And if they don't, factory reset them and re-establish the proper IP.


You can list the private LAN IP addresses as it does not tell anyone anything - they are the same as everyone else.

The IP address of your service provider for your WAN is what you don't provide...Everything on the inside past the modem is fine to put out.

Everything on the inside, the local LAN will fall under these ranges and you are not telling anyone anything about how to hack your system because these ranges are reserved for the "home side" of the service so every home internally will be within this same range):

10.0.0.0 – 10.255.255.255
172.16.0.0 – 172.31.255.255
192.168.0.0 – 192.168.255.255
 
What do you get when you try to access those camera in a browser?

Have you tried a different browser?
 
I had issues like this a while ago after one of my cameras had gone offline and I reset it.

I had to resort to connecting it direct to a laptop. I can't remember exactly how I solved it now, apart from multiple resets, but it was to do with a network address issue. Before I managed to contact it, neither the web interface nor the installation tool would find it. The web interface tool wouldn't even find it with the address range wide open. It just didn't exist under the normal network addresses. So it could have been a camera fault that slowly rectified itself after many resets. Off the top I can't remember. However, I do know I had to remove it from BI and the CCTV network and connect directly to make any progress.
 
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