DVR Access Problem

August 24, 2009 at 02:01:41
Specs: XP, 2GB
Hello,

I have a DVR system. All ports have been opened and configured. The problem i am facing is that from the computer which is on the same network as the DVR will connect via the routers public IP address & local. But, when i use a different internet connection and type in the public ip with the open port, nothing happens.

I am completely stuck on what to do as the Public ip works on the network computer but not an external one :S


Please help me here :)

Thanks.


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#1
August 24, 2009 at 08:43:47
You have to misinterpreting the results. You can't get to the internal device via your wan port ip address. You would be bouncing off the wan port back internally. Routing doesn't work like that. Router would drop the packet since it knew it was local.

This is confirmed by your inability to connect via the internet since you can't have configured the router correctly.

first step is note your wan ip address
2nd is note the static ip of the dvr
3rd is forward the port you configured for the dvr to the ip address of the dvr.

Then either using the software provided for the dvr or via public ip address:port number.


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#2
August 25, 2009 at 01:02:06
Hi,

Thanks for your reply.

I have already done this. I have a static IP given by my ISP and that is shown on my cable modem. Then the cable modem connects to my firewall router. The router does not show the public ip address just it's local address.

I can't work it out because the computer that is connected to the same router as the DVR can connect to the DVR via the public IP address. It works fine i.e. http://IPADDRESS:PORT but then if i try and access it on another network i cannot connect.

Also, remote access does not work even if i forward the ports to the target IP address.

When i port forward, i have 3 options. WAN1, WAN2 & Other Public IP, i choose the Public IP and type in my static ip given by the ISP, other wise it will be using WAN1 which has the IP address of 192.168.0.1.


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#3
August 25, 2009 at 08:17:31
"The router does not show the public ip address just it's local address."
and
"it will be using WAN1 which has the IP address of 192.168.0.1."

It is this misunderstanding that is causing this issue. Wan1 is not 192.168.0.1. That is your LAN ip [ie gateway]

Your modem's ip is not your public ip. That resides on the wan interface of your router.

What is the ip address of the DVR?
What is the ip you use here? http://IPADDRESS:PORT


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Related Solutions

#4
August 26, 2009 at 01:26:34
Hi.

My router status looks like this:

WAN Mode: Single Port
WAN State: UP
NAT: Enabled
Connection Type: DHCP
Connection State: Connected
IP Address: 192.168.0.6
Subnet Mask: 255.255.255.0
Gateway: 192.168.0.1
Primary DNS: 194.168.4.100
Secondary DNS: 194.168.8.100

& my modem status looks like this:


Gateway MAC Address: 00:02:8a:6e:5d:91
Internet IP Address: 86.**.115.***

Subnet Mask: 255.255.252.0
Default Gateway: 86.**.1**.*
DNS: 194.168.4.100
194.168.8.100

DHCP Remaining Time: 6 days 07:40:50


--------------------------------------------------------------------------------

LOCAL SETTINGS

Gateway IP Address: 192.168.0.1

Subnet Mask: 255.255.255. 0

DHCP Server: Enabled

NAT : Enabled

Operating Mode: NAT mode

Private IP Range: 192.168.0.2 through 192.168.0.51
Public IP Range:

System Up-Time: 20 days 18 Hours 29 Minutes 14 Seconds


The ip address of the DVR works locally at 192.168.1.22 & also works on the machine connected to the network at
the internet IP of: http://86.**.115.***:PORT but not on other machines outside the network.


Hope this information helps?


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#5
August 26, 2009 at 08:36:48
Please rewrite the 86.xxx.115.xxx to xxx.xxx.115.???

I can't tell what is assigned to the wan port for ip vs the lan port of the modem.

"192.168.0.2 through 192.168.0.51"
and
" DHCP Server: Enabled "
yet
"DVR works locally at 192.168.1.22 "

You don't want .22 since this should be a static ip assignment and .22 is in the dhcp scope. If you have done a static assignment to the dvr you have setup a potential ip conflict if dhcp assigned .22

My suggestion is set the dvr to 192.168.0.52 which is outside the dhcp scope and redo your port forwarding to that ip.


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#6
August 27, 2009 at 05:56:06
CABLE MODEM

Gateway MAC Address: 00:02:8a:6e:5d:91
Internet IP Address: 86.xx.xxx.173

Subnet Mask: 255.255.252.0
Default Gateway: 86.xx.xxx.1
DNS: 194.168.4.100
194.168.8.100

----

On my router - My lan port is: 192.168.1.1 (which i use to login to the router)

The WAN configuration is automatically taking the settings via auto-detect. The IP address of the WAN is: 192.168.0.6 (and i can also use that to login to the router, that must be coming from the cable modem)

The DVR works if i type it in locally, took your advise to take it out of the DHCP scope. It is now. http://192.168.1.201, but when i try and put it on http://192.168.0.201 it wont work.

What should the WAN configuration say then? I really thought the IP addres shown on the router would have been the static IP address that my ISP gave not the IP address of the Modem.

My Main confusion is that when i type in the IP address: http://86.xx.xxx.173 i CAN connect to the DVR from the computer thats on the same network, but when i try and use my laptop thats connected to a seperate network i cannot connect to the DVR.... Its confusing....


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#7
August 27, 2009 at 08:22:33
This was a type wasn't it with the .0?
"It is now. http://192.168.1.201, but when i try and put it on http://192.168.0.201 it wont work."


1st step with the dvr at 192.168.1.201 it should be accessable via the lan by typing that ip into IE. Are you successful getting to the dvr this way?

Next step is determining what the routers wan interface ip address is. You keep giving me your modem's ip but you don't forward from the modem. You forward from the router.

I would suggest you go into your router, browse to the wan interface or go to status and note the wan interfaces ip address.

It is this address, not the modems, that you put into IE OUTSIDE the lan ie. via another internet access.

You are right that you should not be able to put in the modems ip address and then gain access to the lan based dvr. This should not work simply because the request should hit the modems lan interface and be dropped not reflected back to the lan.

Your topology should be like this:

cable modem [86.xx.xxx.173] lan interface<>Netgear wan interface [???.???.???.???] <>netgear lan interface [192.168.1.1]<> DVR [192.168.1.201]

subnet mask on the xxx.xxx.1.x network would be 255.255.255.0


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#8
August 27, 2009 at 08:50:54
My Netgear WAN's IP is coming at: 192.168.0.6.... It looks exactly like this:

WAN1 Configuration Status

WAN Mode: Single Port
WAN State: UP
NAT: Enabled
Connection Type: DHCP
Connection State: Connected
IP Address: 192.168.0.6
Subnet Mask: 255.255.255.0
Gateway: 192.168.0.1
Primary DNS: 194.168.4.100
Secondary DNS: 194.168.8.100

I can view the DVR locally & by using the IP address from the ISP, but only from this computer which is connected to the same network.


So the topology is:

cable modem [86.xx.xxx.173] lan interface<>Netgear wan interface [192.168.0.6] <>netgear lan interface [192.168.1.1]<> DVR [192.168.1.201]

The WAN interface should read the Static IP address right? I have always forwared the ports via the router & not the modem.

Why would the Public IP work on this computer with the DVR but not on others?




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#9
August 27, 2009 at 09:53:05
please post an ipconfig /all from your workstation.

You mention a static ip. Is that the 87.x.x.173? If your isp gives you a static ip that ip would be on the wan interface of the router not the modem.

Your router stats says wan is set to dhcp. That is not a static assignment. When you get static ip(s) from a isp that/those ips go on your devices not theirs.

Connect your pc directly to the modem and reboot [assuming you are set as dhcp client]. Do a ipconfig and tell me what that ip address is.


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#10
August 28, 2009 at 01:02:37
This is what it says now for IPCONFIG /ALL

Windows IP Configuration

Host Name . . . . . . . . . . . . : BCM
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : netgear.com

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : netgear.com
Description . . . . . . . . . . . : Realtek RTL8139/810x Fa
ernet NIC #3
Physical Address. . . . . . . . . : 00-01-2E-0B-55-B1
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.40
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
Lease Obtained. . . . . . . . . . : 28 August 2009 08:30:08
Lease Expires . . . . . . . . . . : 29 August 2009 08:30:08

The 87.x.x.179 is the IP address that my ISP (Virgin) gave me. See the thing is when i try and change the WAN to static & put the information in there the internet just disconnects & won't reconnect until i put it back to DHCP.

I will connect it to my computer in a while and post the findings.

Wanderer, by the way - thanks for your help here. Means a lot. :)


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#11
August 28, 2009 at 08:53:58
Happy to help.

It will be interesting to see what the ipconfig says when you get a direct to modem connection.

Hopefully its not a 192.168.x.x ip or you will never be able to port forward due to that ip is private and not public. You need a public ip.


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