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Cirick2018-03-13 14:45:31
Computer networks
Cirick, 2018-03-13 14:45:31

Are there online inverse mask calculators?

We need a calculator that calculates all possible options by ip and reverse mask.
For example, when writing an ACL on cisco:
deny ip 10.0.4.0 0.255.0.255
Addresses 10.X.5.X fall here, where X is from 0 to 255.
Or else
deny ip 10.0.4.1 0.0.0.254
All odd network addresses 10.0.4.0/24 fall here.
Those calculators that I found, I offer only a simple inversion of the mask by type 0.0.0.255

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