Multiple Dlink DCS2120 installation with port forwading

[ls01c]

Recently i have installed 3 Dlink DCS2120 ip camera in my house. Im using a Zywall 2 router to connect all these 3 cameras. I have set each camera with a different static ip address and with different port as well. I manage to browse all these camera locally inside my LAN and monitor each of these camera.

Now i want to enable it to be viewed from outside when im not at home. In the router i have forwarded the port for all these 3 IP camera and i have also enable the DDNS service in my router. But when i use the dyndns given host name to access my camera, it always link to the same IP camera even though i use a different port. eg. camera 1 http//:xxxxx.xxxx.xxx:8080, camera 2 http://xxxxx.xxxx.xxx:8081 and camera 3 http://xxxxx.xxxx.xxx:8082. In the router port forwarding setting i have set camera 1 forward port 8080-8080 with an unique Ip address, camera 2 forward port 8081-8081 with an unique Ip address and camera 3 forward port 8082-8082 with an unique ip address as well.

anyone can help me to solve this problem? Currently all the 3 addresses link to the same camera. please help.

[sanyoungam]

The 2120 uses an "RTSP" port for streaming the video. The individual Http ports you set up with the ip addresses are not enough. You have to set a separate port for each camera's RTSP as well. Once you do this, open these same ports on your router also mapped to the correct private IP addresses. On the camera's setup page the RTSP port is under the network tab.

Once you have done this your camera's should work fine. The 2120 is a great camera. If you ever want to get rid of them I'd love to buy them from you. Good Luck.

[Gerson]

[delta37]

i suggest you totally change the port numbers. i have two DCS cameras and i have successfully managed to view them outside my house.

if your cam1 has port 80:80, try to use a totally different port on cam2 let's say 1227:1227

that way it you are sure it won't conflict with other cams

and oh yeah i think sany is right, because i also changes my rtsp to other values

[Gerson]

Thanks for your reply.

We are successfull accessing the camera over Internet on port 80. We are able to see and manage them, but only the camera images can not be seen.

Follows camera´s configuration:

CAM 1

HTTP port 80
RTSP port 554
RTP video port 5560
RTCP video port 5561
RTP audio port 5562
RTCP audio port 5563

CAM 2

HTTP port 80
RTSP port 554
RTP video port 5558
RTCP video port 5559
RTP audio port 5560
RTCP audio port 5561

Trying to change RTSP port to another one like 1554 or 5554 or 10554 stop to view image even on internal LAN. I forgot to say that internaly over the LAN the cameras work ok.

Which ports combination did you use?

Thanks,

Gerson

[delta37]

so you are able to access camera but you only see a blank screen?

sounds familiar hehe

anyways if that's your problem, then here is how to solve that.

access your camera using the DDNS address, not locally.

on the configuration -> network:

1. Uncheck the following:
a. Enable UPnP
b. Enable UPnP Port forwarding
2. Save settings
3. Exit

Access your camera and see if this has solved your problem.

if not, access the camera again via DDNS address

1. Check the following:
a. Enable UPnP
b. Enable UPnP Port forwarding
2. Save settings
3. Exit

The thing here is that, I myself either is unsure if UPnP should be enabled or not. In theory it should, but sometimes if I disable UPnP, the camera works. On the other hand sometimes the camera works also if I enabled UPnP.

So my suggestion here is to try both. Goodluck! Hope this helps.

[Gerson]

Thanks again for your reply.

Well, it not works at all.

Enabled and disabled UPnP, enabled UPnP on router and nothing, just a blank screen.

Some tiny thing I´m missing.

With the DDNS address from inside the LAN we can see the image, with DDNS address from outside our LAN over Internet, just a blank screen.

Router log shows nothing being blocked.

Some port is turning around and do the trick when using internal LAN and it is not coming trough over Internet.

We also blocked NAT for video ports (554, 5558, etc) with no success.

We ask for Dlink support with no hope of reply and until now no reply.

Run out of ideas, if you have any other one, we will thank you.

Thanks,

Gerson

[delta37]

lol I am trully out of ideas..

hmm... I'm thinking if you ask for dlink's help, they will tell you to buy a dlink router instead, w/c is what I am also thinking right now.

I knew from the start of the many complications/incompatibilities of these routers and network hardware that's why I decided to buy all dlink products w/c have been known to be compatible.

Currently what I have is a dlink 624 router, 2 DCS-5220 ip cam, and a couple of DWL-2100AP access point (I bought these to bridge the access point to the router wirelessly coz my pc is far from where I want my camera's to be).

anyways, regarding your problem, I would suggest you buy a dlink router instead but again I can't promise you that it will work 100% sure.

maybe you can find a 2nd hand dlink router or maybe some shop would allow a money back guarantee so you can test it.

goodluck!

[delta37]

hey i got one final solution for you. might want to give it a try

EDITED: on your router make sure you chose TCP only not UDP or Both

then on your camera, enable both the UPnP and UPnP port forward.

still on the camera setting disable/uncheck the "Enable RTSP authentication"

so far the problem i'm encountering with this is that i cannot view 2 cameras simultaneously. you'll have to view them 1 by 1 over the net.

goodluck!

[Gerson]

Thanks again.

I will try it and let you know the results.

Gerson