Subnetting help

BadBoyZ · 07-20-2005, 02:35 AM

Hi all!

This will be my first post on what seems to be an excellent source of free information

I have a home network setup which connects a few pc's to my router in the IP range 192.168.1.xxx with subnet mask (currently) 255.255.255.0. Recently I connected my router to my neighbour's hub for *cough* work *cough* purposes. The network is up and running and everything works fine.

The problem is I don't want to give his computer's access to Windows file and printer sharing on my computers, but I still want to have that functionality on my own computers. I believe the only way to do this is through subnets and applying restrictions/permissions on my router (am I wrong?)

I get the BASIC idea of subnets, but I don't know how to apply it to this situation. Preferably I'd like my computers to run on 192.168.1.xxx and he would like his on 192.168.0.xxx. Does this mean I need a subnet mask of 255.255.254.0, or am I only allowed to limit Class C addresses?

Thanx in advance

**Terrister** · 07-20-2005, 06:38 AM

Unless he is a hacker you should be able to keep him off your machines by use of workgroups and Windows permissions. If all your shares are password protected, that should keep him out.

BadBoyZ · 07-20-2005, 08:32 AM

How do I set windows permissions? The only thing I can find resembling such a functionality is setting the windows firewall to only allow file sharing to specified ips?

Also, for interest sake, how would subnetting work in this case? Is it possible to subnet with 192.168.1.xxx and 192.168.0.xxx?

Thanx for the reply

**Terrister** · 07-20-2005, 10:30 AM

Are you using XP pro or home?

Does your router allow subnetting? I do not think mine has an option for this.

BadBoyZ · 07-20-2005, 01:27 PM

My main PC is running XP Pro, so if I can at least secure it ...
I haven't seen a subnet option so I take it my router doesn't have that functionality.

**johnwill** · 07-20-2005, 06:42 PM

Forget subnetting for security, I'd use the permissions. With XP-Pro you should be able to restrict any access.

**Terrister** · 07-20-2005, 08:26 PM

Quick question for john...

can you subnet a home router?

badboyz-I'll post tommorrow when I am more awake on how to do the Windows security on XP pro

BadBoyZ · 07-21-2005, 01:16 AM

Thanks!
Is there anyway to secure the Win XP Home machines?

**Terrister** · 07-21-2005, 06:57 AM

1st the XP Pro security.
Ok there is security built into XP pro that can do this for you. The people(s) to be locked out need to have another login. This works best if you use a NTFS drive. Right click on the drive letter for this partition. Choose properties. Click on the security tab. You will see a list of users that can access this drive. You need to remove the user everyone. If the other users are administrators, you want to remove that one also. Now add your login if it is not there. Leave system there. Now when anyone not on this list tries to access this drive, they will get an access denied. Quick, easy and best of all free.

Are you sharing anything on the home machine?

BadBoyZ · 07-21-2005, 08:10 AM

When right-clicking on my partition I only have the following tabs:
General/Tools/Hardware/Sharing/Quota
I can't find a security tab anywhere!
I'm on a workgroup, not a domain, if that makes a difference.

As for the Home pc, yes, there are files I'm currently sharing.

**Terrister** · 07-21-2005, 09:21 AM

Ok. Are you clicking on a drive letter in my computer?

This works in a domain or workgroup.

Here is how to setup the "home" machine. http://www.tweakxp.com/article36707.aspx

BadBoyZ · 07-21-2005, 04:02 PM

Lol, thanx for the article!
It helped me figure out why I didn't find a Security tab:

"Specifically, I am referring to the "Security" tab that is available in XP Pro in the properties menu of any file or folder when "Enable simple file sharing" is unchecked in the Tools>Folder Options>View applet."

Thankx

**Terrister** · 07-21-2005, 07:08 PM

No problem. Glad you got it.

**johnwill** · 07-21-2005, 07:27 PM

Terrister, AFAIK, you can't subnet most SOHO routers, they're pretty limited.

07-20-2005, 02:35 AM	#1 (permalink)
BadBoyZ Registered User Join Date: Jul 2005 Posts: 15 OS: Windows XP Pro SP2	Subnetting help Hi all! This will be my first post on what seems to be an excellent source of free information I have a home network setup which connects a few pc's to my router in the IP range 192.168.1.xxx with subnet mask (currently) 255.255.255.0. Recently I connected my router to my neighbour's hub for cough work cough purposes. The network is up and running and everything works fine. The problem is I don't want to give his computer's access to Windows file and printer sharing on my computers, but I still want to have that functionality on my own computers. I believe the only way to do this is through subnets and applying restrictions/permissions on my router (am I wrong?) I get the BASIC idea of subnets, but I don't know how to apply it to this situation. Preferably I'd like my computers to run on 192.168.1.xxx and he would like his on 192.168.0.xxx. Does this mean I need a subnet mask of 255.255.254.0, or am I only allowed to limit Class C addresses? Thanx in advance

07-20-2005, 06:38 AM	#2 (permalink)
Terrister Moderator Hardware Forum Join Date: Apr 2005 Location: West Georgia, USA Posts: 7,098 OS: Xp	Unless he is a hacker you should be able to keep him off your machines by use of workgroups and Windows permissions. If all your shares are password protected, that should keep him out. __________________

07-20-2005, 10:30 AM	#4 (permalink)
Terrister Moderator Hardware Forum Join Date: Apr 2005 Location: West Georgia, USA Posts: 7,098 OS: Xp	Are you using XP pro or home? Does your router allow subnetting? I do not think mine has an option for this. __________________

07-20-2005, 06:42 PM	#6 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,940 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	Forget subnetting for security, I'd use the permissions. With XP-Pro you should be able to restrict any access. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

07-20-2005, 08:26 PM	#7 (permalink)
Terrister Moderator Hardware Forum Join Date: Apr 2005 Location: West Georgia, USA Posts: 7,098 OS: Xp	Quick question for john... can you subnet a home router? badboyz-I'll post tommorrow when I am more awake on how to do the Windows security on XP pro __________________ Last edited by Terrister; 07-20-2005 at 08:27 PM. Reason: spelling

07-20-2005, 08:32 AM	#3 (permalink)
BadBoyZ Registered User Join Date: Jul 2005 Posts: 15 OS: Windows XP Pro SP2	How do I set windows permissions? The only thing I can find resembling such a functionality is setting the windows firewall to only allow file sharing to specified ips? Also, for interest sake, how would subnetting work in this case? Is it possible to subnet with 192.168.1.xxx and 192.168.0.xxx? Thanx for the reply

07-20-2005, 01:27 PM	#5 (permalink)
BadBoyZ Registered User Join Date: Jul 2005 Posts: 15 OS: Windows XP Pro SP2	My main PC is running XP Pro, so if I can at least secure it ... I haven't seen a subnet option so I take it my router doesn't have that functionality.

07-21-2005, 01:16 AM	#8 (permalink)
BadBoyZ Registered User Join Date: Jul 2005 Posts: 15 OS: Windows XP Pro SP2	Thanks! Is there anyway to secure the Win XP Home machines?

07-21-2005, 06:57 AM	#9 (permalink)
Terrister Moderator Hardware Forum Join Date: Apr 2005 Location: West Georgia, USA Posts: 7,098 OS: Xp	1st the XP Pro security. Ok there is security built into XP pro that can do this for you. The people(s) to be locked out need to have another login. This works best if you use a NTFS drive. Right click on the drive letter for this partition. Choose properties. Click on the security tab. You will see a list of users that can access this drive. You need to remove the user everyone. If the other users are administrators, you want to remove that one also. Now add your login if it is not there. Leave system there. Now when anyone not on this list tries to access this drive, they will get an access denied. Quick, easy and best of all free. Are you sharing anything on the home machine? __________________

07-21-2005, 08:10 AM	#10 (permalink)
BadBoyZ Registered User Join Date: Jul 2005 Posts: 15 OS: Windows XP Pro SP2	When right-clicking on my partition I only have the following tabs: General/Tools/Hardware/Sharing/Quota I can't find a security tab anywhere! I'm on a workgroup, not a domain, if that makes a difference. As for the Home pc, yes, there are files I'm currently sharing. Last edited by BadBoyZ; 07-21-2005 at 08:11 AM.

07-21-2005, 09:21 AM	#11 (permalink)
Terrister Moderator Hardware Forum Join Date: Apr 2005 Location: West Georgia, USA Posts: 7,098 OS: Xp	Ok. Are you clicking on a drive letter in my computer? This works in a domain or workgroup. Here is how to setup the "home" machine. http://www.tweakxp.com/article36707.aspx __________________ Last edited by Terrister; 07-21-2005 at 09:23 AM. Reason: left out something

07-21-2005, 04:02 PM	#12 (permalink)
BadBoyZ Registered User Join Date: Jul 2005 Posts: 15 OS: Windows XP Pro SP2	Lol, thanx for the article! It helped me figure out why I didn't find a Security tab: "Specifically, I am referring to the "Security" tab that is available in XP Pro in the properties menu of any file or folder when "Enable simple file sharing" is unchecked in the Tools>Folder Options>View applet." Thankx

07-21-2005, 07:08 PM	#13 (permalink)
Terrister Moderator Hardware Forum Join Date: Apr 2005 Location: West Georgia, USA Posts: 7,098 OS: Xp	No problem. Glad you got it. __________________

07-21-2005, 07:27 PM	#14 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,940 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	Terrister, AFAIK, you can't subnet most SOHO routers, they're pretty limited. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience