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Using CIDR's on IIS

By sabatogz ·
Using windows 2000 and running Internet Information services. We have a web site used for internal operations and we would like to make it available to another business. Under "Directory Security", "IP address and Domain Name Restrictions" I have selected "By Default, all computers will be" Denied Access except those listed.

My Question is how would you use a CIDR in this dialog box? Example x.x.x.x/25

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Using CIDR's on IIS

by AYoshi In reply to Using CIDR's on IIS

Go ahead and use a traditional subnet mask: 255.255.255.128

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Using CIDR's on IIS

by sabatogz In reply to Using CIDR's on IIS

Would I still use the /25 in the dialog box or just leave it out?

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Using CIDR's on IIS

by AYoshi In reply to Using CIDR's on IIS

The CIDR is basically a replacement for the netmask.

Putting the netmask equivalent of /25 into binary, we get:
11111111.11111111.11111111.10000000

The /25 defines the first 25 bits of the ip address as the network, which translates to 255.255.255.128.

Thus, depending on the equipment you are using you will use either the netmask or the CIDR, not both.

Good luck.

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Using CIDR's on IIS

by AYoshi In reply to Using CIDR's on IIS

Also, to answer your question directly, no, you would not need to add the /25. :)

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Using CIDR's on IIS

by sabatogz In reply to Using CIDR's on IIS

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Using CIDR's on IIS

by sabatogz In reply to Using CIDR's on IIS

Point value changed by question poster.

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Using CIDR's on IIS

by sabatogz In reply to Using CIDR's on IIS

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