[Kevlar19]

HI

I read this article from CNET and was trying to do what the article says the following,

"How to know whether your neighbors or others are using your wireless network is rather complicated. If your neighbors are experienced Wi-Fi hackers, you might not be able to tell at all. If they’re just stealing your Internet connection, you may be able to tell from the logs on your router. You could look for logs such as current LAN clients, connection or status log, or connected MAC addresses.

Check MAC ID addresses
To find out who’s on your wireless network, you’ll need to start by taking inventory of all the devices that are meant to be connected. Find out their MAC IDs and their IP addresses (if they’re static).

To find out the MAC ID/IP address on a PC, click the Start menu and choose Run. Type cmd and click OK. In the screen that opens, type “ipconfig /all” (without the quotes) and hit Enter. The MAC address will be shown as the “physical address.”
Once you know the MAC addresses of each of the PCs on your network, you will recognize any addresses that don’t belong under the screen that shows the MAC addresses of current connections.

Check IP addresses
Likewise you may be able to see how many IP addresses have been dished out by the DHCP server. If you check the IP addresses of each of your PCs, you can see if other IP addresses have been served.

To find out your IP address from the Start menu, click Run. Then type in cmd and click OK. In the screen that comes up, type ipconfig which will display the IP address for that computer. (Bear in mind, however, that if the PC is set to auto detect settings, then the PC’s IP address will change the next time the computer is rebooted or switched on. Sometimes previously served numbers have not yet expired, so you may think someone is connected when they are not.)

Dealing with intruders
If you do find someone using your connection, they may well not be doing so maliciously or even knowingly. Sometimes people can’t tell which is their own connection and they may honestly believe that they are using their Wi-Fi router rather than yours. The best way to deal with this is to set up your own security and maybe you can help them find their own router!

The optimal solution is to set up a strong password using WPA and change it regularly. Once your network is functioning, you can switch off the SSID broadcast (which prevents it from advertising the name of your network) so it would effectively disappear as far as your neighbors are concerned, and the first you might hear of it is when someone complains that their Web connection has disappeared.



Now to my problem, when I attempt the first part and type in "ipconfig / all" a screen pops up, I think with the information, but disapears so fast I can't read it, it only flashes up for less than a second, can anyone tell me why this is happening or better yet how I can fix it?

Thanks so much ahead of time, you guys were really help last time I couldn't remove a virus

[DoubleHelix]

Type CMD to open a command prompt window. Then run ipconfig /all.

[bearone2]

ipconfig/all......no spaces

[DoubleHelix]

Either work.

[bearone2]

well i tried with the spaces and it didn't, that's why i made the comment.

"unrecognized or incomplete command line" was the message

[etaf]

what are you trying to do - stop other people from using your network -
post make and model of router
WEP is easily broken - use WPA/WPA2 if all you hardware supports it - router and adapters

a good bit of software to see wireless signals channels etc
Free software to check signal strength of wireless is netstumbler 0.4.0 available for download from http://www.stumbler.net/


ipconfig /all - usually works with the space

[DoubleHelix]

It does.

[bearone2]

well it didn't on mine. i got the message in #5.

you both claim it works, then please copy/paste/however, ipconfig / all, with the spaces when entered at the cmd prompt for any of your machines.

[1069]

Hi bearone2,

I can confirm that, having tried both options ( with space / without space ) they both work and give the same results for me too.

ipconfig/all
ipconfig /all .......both good

However if I type ipconfig / all ( space either side of / ) I get your error message .

[etaf]

bearone2

with space

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\wayne>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : WayneLaptop
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Realtek RTL8139/810x Family Fast Eth
ernet NIC
Physical Address. . . . . . . . . : 00-0F-B0-BF-08-EB

Ethernet adapter Wireless Network Connection 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom 802.11b/g WLAN
Physical Address. . . . . . . . . : 00-14-A5-64-81-EA
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.3
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 212.135.1.36
195.40.1.36
Lease Obtained. . . . . . . . . . : 31 March 2007 19:33:16
Lease Expires . . . . . . . . . . : 03 April 2007 19:33:16

C:\Documents and Settings\wayne>

without space

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\wayne>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : WayneLaptop
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Realtek RTL8139/810x Family Fast Eth
ernet NIC
Physical Address. . . . . . . . . : 00-0F-B0-BF-08-EB

Ethernet adapter Wireless Network Connection 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom 802.11b/g WLAN
Physical Address. . . . . . . . . : 00-14-A5-64-81-EA
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.3
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 212.135.1.36
195.40.1.36
Lease Obtained. . . . . . . . . . : 31 March 2007 19:33:16
Lease Expires . . . . . . . . . . : 03 April 2007 19:33:16

C:\Documents and Settings\wayne>

[Kevlar19]

thanks for the replys people, and yes ipconfig/all has to be with no spaces, to answer
etaf, that is exactly what I'm trying to do,

1. Find out if anyone else is using my wireless connection and,
2. set it up with wpa/wpa2 so its more secure

what should I do?

[bearone2]

Originally Posted by etaf

bearone2

with space


without space

one space works, what was in the 1st post doesn't because it has two spaces,
"ipconfig / all" and that was my point.

[ozrom1e]

Look I will stop the argument about the space and no space. It just depends on the computer and OS used some computers it works both ways and some others it only works with the space. The proper way is the way it works on which ever computer.

To find out the proper syntax type; ipconfig /? and press enter in the command window.

If you are trying to stop people from using your wireless just go in to the router and encrypt the connection and then turn off SSID and if you do not want to use it turn it off and then save and you are secure.

Have a good day.

[bearone2]

no it doesn't, plug in the two spaces ipconfig / all and no worky. try it.

[etaf]

bearone2 - sorry I missunderstood your point - you are absolutely correct that a space each sode of the / willl not work on any system
apologies for the misunderstanding

1. Find out if anyone else is using my wireless connection and,
2. set it up with wpa/wpa2 so its more secure

what should I do?

exactly as the article said
look in the router at any connections map or info - that will give you MACaddress of all PC etc connected
then use WPA secruity
use MAC addressing
disable broadcast of SSID
change the username and password on the router admin
you could even change the default IP DHCP from 192.168 to something else