Open Ports

What ports are you trying to open/forward? If the old router isn't working either, probably isn't the router. What model modem/gateway do you have? I suspect the problem is there.

thank you for the reply Health Edge.

I am trying to open ports 151-158.

My modem is a CISCO Model #DPQ3212

Hi DerrickW,

I have been told this several times. Each time I have clearly stated the ports I am wishing to Open is 151-158. I have utilized these ports in the past but am unable to now.

Am I missing something in the link you provided ?

I do not see ports 151-158 listed on the link you provided.

-Scott

I know those ports are not of Cox's blocked list but they are official ports anyway... for example, 156 is a SQL service port.  I would try changing your usage to unused ports in the 8xxx or 9xxx range.  I have my cameras set to 8xxx ports and have no issues.

Scott7494 said:
My modem is a CISCO Model #DPQ3212

That's a modem. There are no ports to forward on a modem, and I doubt they are being blocked at the ISP level. If you want to test that, connect the device you're trying to forward to directly to the DPQ3212. If its a PC, try a port scan. It might be a firewall issue, so check that too. Also make sure what ever service or app is running so that the port your scanning for is open. 

What do you have the DPQ3212 connected to? The Nighthawk router? If so, how do you have it configured? Could you post a screenshot of the forwarding rules? Also, can you give a little context of what you're trying to do? SQL server? Mail server? 

Yes I am using the nighthawk router. I have tried every trouble shooting option availabie.. I also even went through the trouble of buying a brand new one. Still the same result. Cameras no longer work

Ok I believe I have it fixed. I was utilizing a static IP internally for the cameras. Instead of selecting static I let DHCP handle it. I also put it on port 81 to start.

Either way, it is fixed. Thanks for you all's help

If your going to use DHCP, you should also set DHCP reservations. The D in DHCP is Dynamic, which means using it, your IP can/will change, so unless you set reservations, the forwarding rule will be to a IP no longer used by the camera system. Here is Netgear article on how:

http://kb.netgear.com/app/answers/detail/a_id/24091/~/how-do-i-reserve-an-ip-address-on-my-nighthawk-router%3F

Also, how do you access your cameras outside of your home? Do you type in a IP or a domain name? If you type in a IP, also remember Cox uses DHCP for your EXTERNAL network too, so your public IP will change. All you have to do is check what your IP is every now and then, and if it changes, make note of that change when you remote in. If you don't want to have to do that, check out DDNS. Basically its a application that runs on the router that monitors when your public IP changes, and will update the domain. Here is a Netgear article on DDNS:

http://kb.netgear.com/app/answers/detail/a_id/23945/~/how-do-i-set-up-dynamic-dns-on-my-nighthawk-router-if-i-already-have-a-dynamic

::Edit:: Tagging is broken I guess...what a great forum. :( Had to give entire link.

Scott7494 said:

Ok I believe I have it fixed. I was utilizing a static IP internally for the cameras. Instead of selecting static I let DHCP handle it. I also put it on port 81 to start.

Either way, it is fixed. Thanks for you all's help

Your welcome, Scott.  FWIW, using a dynamic IP assigned by DHCP is not a good idea for something like a security camera requiring port forwarding.  If something changes and the camera obtains a different IP when it renews it's lease it will stop functioning again.  You do want a static IP.  Just make sure the IP you give it is on the same subnet (first 3 numbers are the same as the router's address) and the last number is unique and outside the range assigned by DHCP.

For example, if your router has an IP address of 192.168.1.1 and a DHCP range of 100 and above:
- the first three numbers of your camera's IP must be 192.168.1
- the last number must be unique and 99 or below, each camera must have a different, unique number

The nighthawk router allows to select devices by mac address. So it should have no problem. Correct line of thinking ?

Scott7494 said:
Correct line of thinking ?

I don't think so. Check out my first link the the post above. Link was broken before, so I include entire website. The items listed in the drop down are just active DHCP leases in your system. It makes it easier to apply the forwarding rule to that specific IP, but does NOT reserve that IP. To do that you have to fallow the instructions in the link above. To clarify, it will work with out doing this, there is just risk of it suddenly not working should the IP change. The other way would be to use a static IP instead, but then you have to make sure that IP is in the same subnet as your router (IE your router is 192.168.1.1, so your camera needs to be 192.168.1.x).

::Edit:: If using a static IP you also have you use one outside your DHCP range. Otherwise the router may give that IP to another device via DHCP even though its assigned to your device as static. Two of the same IP on the same network= IP conflict.