security cameras cause loss of surfing ability 1

[matanzas]

I have a friend that has installed two D-Link security cameras in his home and now when he opens IE or Firefox he only gets “Page cannot be displayed” in spite of being online. He can send and receive e-mail just fine, he just cannot surf the net. He told me that he installed the cameras and assigned IP addresses for each one. I really don't know much about it so if someone can give me a heads up on where to start I would appreciate it.
Thanks

 

[franklin97355]

So what happens if he disconnects the cameras and reboots his computer? (Step 1)

The answer is "42"

 

[matanzas]

OK, good question; I'll ask him and report back but... there are two possible scenarios...
1 - he re-gains access to the web or
2 - he doesn't.
Can you give me a heads up on what each outcome might represent?
Many thanks

 

[matanzas]

Apparently he cannot surf when the cameras are uninstalled either.

 

[franklin97355]

You might have him check his router to see what it thinks is connected to the internal lan. (or do a hard reset on it)

The answer is "42"

 

[matanzas]

I have the computer now and have uninstalled everything to do with the wireless network but I cannot surf even when wired. The computer can receive mail and limewire connects but IE and Fx won't connect.
I am stumped.
Any thoughts?
Thanks

 

[Cwgunder]

Sounds like he may have assigned a static IP address to his computer and that IP adress is either wrong or is the same as one of the camera's. All of the devices need different address.

He's got a router connected right? Most home roughters can be setup to automatically assign IP addresses using a service called DHCP (dynamic host control). It may save time and trouble just to set them all up for DHCP.

Hope this helps

Good Luck!

Chris

 

[matanzas]

Thanks Chris:
I am not really strong with this. To reassign an IP address for the computer what would I need to do?
TIA

 

[attrofy]

Doing some quick browsing through D-Links camera manuals, it is possible that there is a firewall port restricting internet access. What type of cameras are these? And what type of router is he using? Are you using all the same quipment on your setup now?

You have to verify that he has DHCP enabled in the router. If not, you will have to assign an IP address manually. If you have your system setup with his equipment, it is quite possible that you will lose internet connection as well.

If you explain a bit more about how you have your system configured, we can tell you how to assign the IP address. How do you have his computer connected to the internet? Is it through your broadband connection?

General rule of thumb if DHCP is enabled:
Start > Run > type "cmd", enter
at the command prompt:
ipconfig /release
ipconfig /renew

that should get you a new IP address. If it is not DHCp enabled, or you need to assign a static IP, report back with how you have his computer configured to your internet connection, and how you have these computers networked.

 

[Cwgunder]

WHEW! this one's long... bear with me.


The PC must already have an IP adress if it can still get e-mail which is why I was thinking that it may be using the same IP as one of the cameras.

Let say for exmple, the PC is set for DHCP, then the router will probably assign it something like 192.168.1.100

You stated that he assinged addresses for the cameras. If he assigned the same one, not knowing what adress was assigned to the PC, then this would make sense.


To check the current IP address on PCs running Windows NT, 2000, or XP click start, run then type:

cmd

then:

ipconfig

the IP adress, amonst other information, will then dispkly


FYI
To check to see if DHCP is enabled on PCs running Windows NT, 2000, or XP they should be able to

right click "My Network Places", go to properties

Right click "Local Area connection", and go to properties.

Then, find and double click TCP/IP

You should see that IP options there. Check and make sure that the PC is set for DHCP (it might say "obtain IP address automaticaly" instead of DCHP)

IF DHCP is enabled:
click start, run then type:

cmd

when the command prompt opens type:

ipconfig /release

then:

ipconfig /renew

it will tell you if it has obtained an IP address.

Let me know what you find.

FYI
In order for DHCP to work it has to be enable on the router. If you have questions about that let me know.




Hope this helps

Good Luck!

Chris

 

[Cwgunder]

I hate the fact that there's no edit button on this thing.

I just noticed where you stated that you've got the PC now and you've uninstalled everything to do with the wireless connection.

The problem is most likely with the TCP/IP configuration either on your router or the PC itself.

Follow the instructions I provided to to check if DHCP is enabled and do that. IF your using a router with DHCP enabled then I'd make sure that DHCP is enabled on the PC and try to obtain one from your network using the release and renew method I explained earlier.


If you've been able to get and IP address from you're network and still can't connect. I can explain how to re-install TCP/IP altogther and provide a utility that will rebuild the default winsock configuration.

Let me know what you find.

Hope this helps

Good Luck!

Chris

 

[matanzas]

Hi Chris:
I had already walked throgh your suggested steps and still could not connect. That was on his router.

I didn't check as to whether DHCP was enabled in his place however he has 3 or 4 computers on his wireless network along with the cameras. The cameras can be viewed on all of the other computers and they work fine while being able to surf the web on any of them.

I brought the suspect machine here to my office, uninstalled the wireless aspect, hooked (cable) up to my modem/router and cannot connect.

The following is what I get upon renew: (which was what it was when I initially checked ipconfig)

IP Address..........: 192.168.2.11
Subnet Mask.........: 255.255.255.0
Default Gateway.....: 192.168.0.1

My computer (wired) connects just fine and DHCP is enableed on my machine.

My modem is a combo modem/wireless router. There is a secure network set up in my place from the modem/wireless router (my partner uses it some time) but I know little about it. How would I check it?

Thanks for this!!

 

[franklin97355]

The IP and the gateway don't match with the subnet mask. It looks like he has the ip set static. try a release make sure it did release (ip will be 0.0.0.0) and then shut the computer down and restart, see what he picks up for an IP

The answer is "42"

 

[matanzas]

When I release the ipconfig and restart the same detail returns as before:

IP Address..........: 192.168.2.11
Subnet Mask.........: 255.255.255.0
Default Gateway.....: 192.168.0.1

What does that mean?
Thanks

 

[matanzas]

My machine (which can surf) reads:

IP Address..........: 192.168.2.10
Subnet Mask.........: 255.255.255.0
Default Gateway.....: 192.168.2.1

 

[franklin97355]

The default gateway on his computer is not correct. Do as CWgunder says and make sure the gateway is not set in the tcpip settings of the network card.

The answer is "42"

 

[matanzas]

I cleared everything out of tcp/ip settings and released the ipcofig again. On restart I now get:

IP Address..........: 192.168.2.11
Subnet Mask.........: 255.255.255.0
Default Gateway.....: 192.168.2.1
[/quoe]
Now however, when I start IE (v.7 btw... not my idea) I get an error and it closes. Fx will start but displays a blank page.
Mail works fine... cannot surf.

 

[Cwgunder]

OK now the IP configuration looks good, though it may need to be set static again once you get it back on his network. That'll depend on how he has his network setup.

The first problem was that the IP address and the default gateway did not match. The first three octets should match, meaning both should read 192.168.2.x. A default gateway is really only the IP address of the closest router or switch. So the interal IP address of your home router is 192.168.2.1 right?

Do you have any more information on the IE error? The actual error message would be helpful.

Try this...

open the command prompt by clicking start, then run, and typing cmd.

then type: ping

http://www.dell.com

here's what you should get. (the bytes, time, and TTL won't match but that part doesn't matter)


Pinging

http://www1.ins.dell.com

[143.166.83.38] with 32 bytes of data:

Reply from 143.166.83.38: bytes=32 time=53ms TTL=234
Reply from 143.166.83.38: bytes=32 time=47ms TTL=234
Reply from 143.166.83.38: bytes=32 time=52ms TTL=234
Reply from 143.166.83.38: bytes=32 time=46ms TTL=234

Ping statistics for 143.166.83.38:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 46ms, Maximum = 53ms, Average = 49ms

(Keep in mind that won't work for all websites. Some firewalls on the web servers prevent them from replying)


If that does work, then what we've proved it that TCP/IP is now setup correctly and your only remainging problem is with IE, in wich case it's time to remove version 7. You may be able to re-isntall it later, but for now I'd remove it and roll back to version 6 with service pack 2. As for as I know IE v7 is still in it's beta (or testing) phase.

If you are unable to get a reply, then type: ipconfig /flushdns and try to ping dell's website again.

Let me know what happens.



Hope this helps

Good Luck!

Chris

 

[matanzas]

I am able to ping Dell.

I am now uninstalling IE 7. Firefox only loads a blank page (no content at all) when started so I will uninstall that too.

stand by for next report.

 

[matanzas]

uninstalled IE7 and Fx but results the same.
IE causes error.

Exception Information
Code: 0xc0000005
Flags: 0x00000000
Record: 0x00000000000
Address: 0x00000000000

I am thinking that a repari install of XP might be in order.