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IP Address and Subnet Address Validation


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#1 devprogrammer

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Posted 06 July 2018 - 09:56 PM

I am developing a code to validate that an IP and Subnet IP combination is a valid one. Say the IP address is 192.179.10.105 and its subnet mask is 255.255.0.0 - so what are the validations we can make to check that IP and Subnet combinations is valid.

I am assuming that the we can only check that IP address should not be 192.179.0.0 and 192.179.255.255 - is it correct or is there any other validation we can make?

 

Is there a way an IP and subnet combination be configured / setup Invalid? What IP and Subnet / masks configuration should we treat as invalid?


Edited by devprogrammer, 06 July 2018 - 10:54 PM.


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#2 mightywiz

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Posted 18 July 2018 - 02:57 PM

we already have IP Subnet calculators.  Why re-invent the wheel when it's already been made?

 

and according to the calculator it would be 192.179.0.1 - 192.179.255.254


Edited by mightywiz, 18 July 2018 - 02:58 PM.





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