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Firewall configuration - problem with subnets

Posted on 2014-10-15
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Last Modified: 2014-10-15
I am trying to replace and old firewall with a new version (4 years younger software).

The old firewall had the LAN subnet set to 192.168.1.254/24

whereas the new firewall (that is not working correctly) is using

a LAN subnet of 192.168.1.0/24

What is the difference between the two subnets - I thought these were both the same ?
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Question by:tigger44
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Ken Boone earned 500 total points
ID: 40382930
There is no difference.  In the old firewall it was actually using a host address with the subnet mask combo to identify the network.  It does this internally by performing and AND operation with the host address and the subnet mask which will result in 192.168.1.0.  

In the new firewall it is referred to in its most common format of using the network address / subnet.

Same subnet however, the syntax for putting it in might now require the actuall network address which is the normal way to do things...  Doing it the way it was done in the old firewall tends to confuse people.
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Author Closing Comment

by:tigger44
ID: 40382939
Many thanks - it certainly confused me !
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