Home LAN WiFi Cam

[OldGuy]

Please suggest some place to post this if no one here can help.

I have a Lorex WiFi cam app with four Cams.

I have an Amped R20000G router that is hardwired to an Access Point
AP20000G WiFi unit.

Three WiFi cams are WiFi linked to the R20000G and one is WiFi linked to
the AP20000G unit. This last one is the problem.

The app that comes with it finds all Cams and displays video and audio
and has limited access to change settings.

The problem is that in the app the three cams are totally accessible and
open a browser window to adjust settings. The other, although it is
video and audio visible (an some limited adjustments), has no means to
access all of it. Pretty stupid app.

Now please do not suggest going to the Cam tech support. I tried that
and they are dunderheads, like totally!

All I want to do is get full access to the Cam on the Access Point.

1) Is there an IP scanner that can get through the R20000G to the AP2000G?

2) What terminology would I look for in the R20000G admin setting
accessible through the browser to open up access to the hardwired AP20000G.

3) I have the MAC address of all WiFi cams. Is there a way to leverage
that to get access?

My laptop is hardwired to the R20000G.

 

[Paul]

Please suggest some place to post this if no one here can help.

I have a Lorex WiFi cam app with four Cams.

I have an Amped R20000G router that is hardwired to an Access Point
AP20000G WiFi unit.

Three WiFi cams are WiFi linked to the R20000G and one is WiFi linked to
the AP20000G unit. This last one is the problem.

The app that comes with it finds all Cams and displays video and audio
and has limited access to change settings.

The problem is that in the app the three cams are totally accessible and
open a browser window to adjust settings. The other, although it is
video and audio visible (an some limited adjustments), has no means to
access all of it. Pretty stupid app.

Now please do not suggest going to the Cam tech support. I tried that
and they are dunderheads, like totally!

All I want to do is get full access to the Cam on the Access Point.

1) Is there an IP scanner that can get through the R20000G to the AP2000G?

2) What terminology would I look for in the R20000G admin setting
accessible through the browser to open up access to the hardwired AP20000G.

3) I have the MAC address of all WiFi cams. Is there a way to leverage
that to get access?

My laptop is hardwired to the R20000G.

This is purely a wild guess, but it sounds like
something in the Wifi setup (between your two
devices), is using Network Address Translation (NAT),
and you need port forwarding set up in it, to forward
port 80 access, towards the IP address that the separate
webcam is using.

But then the question would be, why is the data
transport layer working ? Why doesn't it suffer the
same fate as the port used for the web setup ?

Personally, when a person asks a question like this,
I like to see a networking diagram. Show some IP addresses,
so we can guess what problems are present.

192.168.2.1
User-- R20000G -----Ethernet---- AP2000G --- Webcam4
| | | (Wifi)
| | | (Wifi) IP=192.168.2.5
Webcam1,2,3
IP=192.168.1.5
IP=192.168.1.6
IP=192.168.1.7

Everything in there has an IP address. And since 192.168
is not route-able, if you're not careful, devices can be
cut off from one another. For example, I have
two subnets on my LAN setup, and I can't access the ADSL
modem right now. I have to disconnect the wiring, and
reconfigure, if I need to talk to the webserver on the
ADSL modem/router.

The documentation may state what ports need to be
forwarded or open, for the IP cams to be fully
functional. That would be in the IP cam manual.

There's no point looking in the manual for R20000G
or AP2000G, until the IP numbers are nailed down.
To better understand everything works, the way we
think it works.

HTH,
Paul

 

[BillW50]

Whoa! I had no idea OldGuy. I hate using non-OE newsreaders because one
is the last to know.

 

[Paul]

It happens that Paul formulated :

That is why in a previous post I was looking for a great LAN scanner so
I could ID the IP of that wandering IP camera WiFi-ed into the AP.

So far everything I tried does not see it.

I make the assumption that the Access Point may reuse an IP address that
the main router is using??? I am not sure how they handshake.

From the Lorex app I can access some (a small subset) of all that is
available in a browser window knowing the cam IP address (as I do for
the other three cams).

Is there a way to use the MAC address to find the IP address?
The MAC is printed on the cam.

I wonder if the Lorex software knows the MAC address.

To further complicate or enlighten, all web cams are visible remotely.
i.e. on the road through my cell phone using a Lorex Android app.

An option might be to try to WiFi my laptop into the AP and see what I
can see there but that defeats the single access point I need to have.
I may try that later if all else fails.

Your last idea sounds like a good one.

*******

I like to have a mental image of my network here. And
that means noting down which subnet everything is supposed
to be on.

I did use an application once, which automatically pings
every IP address from a range of addresses. I had a dead
router, and I was trying to figure out if the gateway
address had moved or something. I got no response from it.

It may be easier, to use the web interface on your AP,
and examine the DHCP table of "things that are logged in".
If the LNC104 uses DHCP, it may be noted in the table.
If the LNC104 is set up statically, then you might
need another approach.

I think the application I used for scanning was "fping".
I used that a number of years ago. But there are
many other examples of range scanning applications. Make
sure to scan unroutable ranges, like 192.168.1.1 to 192.168.255.255
kind of range. That is termed 192.168.x.x. There is
also the 10.x.x.x range. Both of those are not route-able.
Your AP should be sitting on its own subnet, and relying
on the main router for access to the Internet (and the
WAN address on that router, is a route-able address).

http://superuser.com/questions/45687/how-can-i-ping-a-range-of-ip-addresses-simultaneously/45691

Examples of ranges to scan, are here. But don't
scan all the ranges, if you already have an idea where
it is The DHCP on your setup, should only
be serving up private addresses, not public ones.
Only the DHCP on your ISP's equipment, serves
up public ones.

http://en.wikipedia.org/wiki/Private_network

Paul

 

[Paul]

OldGuy wrote:

I found a manual here for the LNC104. It has a multitude of
setup options. It can use DHCP, and then on your home
networking equipment, you can trim down the range of
addresses it can use. For example, my router only has
maybe a dozen addresses available in DHCP (I set it that
way). And I could trim it tighter than that, if I had to.
The end result, is a relatively small range of addresses
to ping. When you assign a range of IP addresses in the router,
it restrict the various machines on the subnet, to use
say 192.168.1.33 to 192.168.1.44.

http://www.lorextechnology.com/downloads/ip-cameras/LNC104/LNC100_SERIES_MANUAL_EN_R3_web.pdf

My router also has a table, listing currently connected
machines and their DHCP lease info.

Paul