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Windows 7: Removing a PC from the network?

05 Apr 2011   #11
acurasd

Windows 7 Ultimate x64
 
 

Same here... I have a netbook i'll be selling soon and then my HTC Evo i have on it and that's it... rest of the computers are hard wired.


I keep the wireless on a different subnet so others can't try to hack the 2nd router and access the network shared folders... people around me are not really that smart...but it is still good to be safe.


My System SpecsSystem Spec
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06 Apr 2011   #12
jimbo45

Linux CENTOS 7 / various Windows OS'es and servers
 
 

Hi there
You could also limit the number of IP addresses the DHCP server serves out on the router -- in fact if you were to assign the 3 PC's specific IP addresses and limit in the Router control panel the IP ranges by switching of DHCP server functionality you could easily prevent an outside source from logging in to your network.

Your Router Log (99% of them even cheap ones) have a log giving details of what computer connected and when so you should be able to trace the rogue computer.

If you've been playing with Virtual Machines or booted up other computers in the mean time you might well get in Network discovery the names of these machines even though they aren't actually connected.

Cheers
jimbo
My System SpecsSystem Spec
06 Apr 2011   #13
Gornot

Windows 7 Home Premium x64
 
 

Thanks for all the comments.
jimbo, that sounds a bit too advanced even for me. I don't like to tinker hardware that's not completely mine (this equipment is actually "rented" by contract, lol), that's why I feel more comfortable to just change the security.

Speaking of, you guys were right. The security is as basic as it gets. WEP64Bits with a 5-letter password, lol, so I'm gonna try out turning on MAC filtering AND changing the network name/password, enhacing it to WPA/WPA2 (is there a difference?)

EDIT-jimbo, is this supposed to be what I need to limit the number of IPs?

Removing a PC from the network?-dhcp.png


My System SpecsSystem Spec
.

06 Apr 2011   #14
Shootist

Windows 7 Pro x64
 
 

Quote   Quote: Originally Posted by jimbo45 View Post
Hi there
You could also limit the number of IP addresses the DHCP server serves out on the router -- in fact if you were to assign the 3 PC's specific IP addresses and limit in the Router control panel the IP ranges by switching of DHCP server functionality you could easily prevent an outside source from logging in to your network.

Your Router Log (99% of them even cheap ones) have a log giving details of what computer connected and when so you should be able to trace the rogue computer.

If you've been playing with Virtual Machines or booted up other computers in the mean time you might well get in Network discovery the names of these machines even though they aren't actually connected.

Cheers
jimbo
Not really any more secure by limiting the number of IPs the router hands out.
All that anyone has to do is assign a static IP to there PCs Ethernet card, whether wired or wireless, in the same range as the routers IP address and they could connect.

To be honest if you have a good router, wired only or including wireless, no one can brake into your LAN from the outside, internet side, and have the proper wireless security with strong password from the wireless side of your LAN. This has been proven.
Then again what you need on each PC is a strong username password on each PC users account so even it someone was to connect by wire to your LAN they can not access your shared files/folders/drives without knowing your user name and the password for that username.
My System SpecsSystem Spec
06 Apr 2011   #15
Shootist

Windows 7 Pro x64
 
 

Quote   Quote: Originally Posted by Gornot View Post
Thanks for all the comments.
jimbo, that sounds a bit too advanced even for me. I don't like to tinker hardware that's not completely mine (this equipment is actually "rented" by contract, lol), that's why I feel more comfortable to just change the security.

Speaking of, you guys were right. The security is as basic as it gets. WEP64Bits with a 5-letter password, lol, so I'm gonna try out turning on MAC filtering AND changing the network name/password, enhacing it to WPA/WPA2 (is there a difference?)

EDIT-jimbo, is this supposed to be what I need to limit the number of IPs?

Attachment 147663
Yes there is a BIG difference between WEP and WPA/WPA2. WEP is easily hackable.
WPA/WPA2 with a random long passphrase is not. And if you use WPA/WPA2 with a long random passphrase all other types of so called security is useless/not needed/does nothing to secure your wireless side.
My System SpecsSystem Spec
06 Apr 2011   #16
Gornot

Windows 7 Home Premium x64
 
 

Alright, then, thanks

I switched to WPA2 and used a mid-complicated password, being paranoid as I can get and thinking that if something like this happens again, I can edit the password and make it even more complicated hehe

Will mark this as solved
My System SpecsSystem Spec
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