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Old 10-08-2005, 02:35 AM   #1
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Default Subnet mask

im new, and im wanting to know how to change your subnet mask, ive heard it's possible but not quite sure how.
Current info: *Windows XP
*D-link modem
* domestic IP
*ZoneAlarm firewall

If you need anymore info, please feel free to ask.
Thank you.

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Old 10-08-2005, 12:40 PM   #2
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Default Re: Subnet mask

your subnet mask is matched to your IP range you cannot just randomly change this number.

see http://www.computerforums.org/showthread.php?t=23386

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Old 10-09-2005, 12:53 AM   #3
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You can change your subnet mask... Go to your router's config page via web browser. Mine was (your's may be different) Look for the LAN section, you should see a series of addresses you can change...

Keep in mind that if you change the subnet mask, you must change the subnet mask of all the computers in your network to match the router's.

If you do not know the IP address of the router, go to the command prompt. type "tracert aol.com" (Without quotes) The first line will show the IP address of the router.
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Old 10-15-2005, 07:49 PM   #4
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Default Re: Subnet mask

Go to the command prompt and type ipconfig /all and you will see all your network info. default gatway is your router.
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Old 10-17-2005, 05:51 AM   #5
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Default Re: Subnet mask

Anonymous, you've posted the local IP address not the subnet mask...

machine addresses come in two parts, each opening up a range of addresses...

most home networks will use an IP address in the range 192.168.0.x (as defined in the INAA specs as a class C private network). but home networks are also free to use 10.x.x.x and 172.x.x.x

Subnets help to divide networks into blocks of machines that can be considered on the same network.

for instance, if you have two machines,

whilst they are on the same network hardware, with the same address prefixes, and same subnet mask, they are not able to contact each other, because they are seperated by the subnet.

changing your subnet can be opening up a can of worms...

that explenation/warning aside, what OS are you using? the method used to change the subnet will be slightly different betweens OSs.
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