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What is a Netmask?: Difference between revisions
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A '''Netmask''' is a 32-bit "mask" used to divide an IP address into subnets and specify the network's available hosts. In a netmask, two bits are always automatically assigned. For example, in 255.255.225.0, "0" is the assigned network address. In 255.255.255.255, "255" is the assigned broadcast address. The 0 and 255 are always assigned and cannot be used. | A '''Netmask''' is a 32-bit "mask" used to divide an IP address into subnets and specify the network's available hosts. In a netmask, two bits are always automatically assigned. For example, in 255.255.225.0, "0" is the assigned network address. In 255.255.255.255, "255" is the assigned broadcast address. The 0 and 255 are always assigned and cannot be used. | ||
Netmask defines how "large" a network is or if you're configuring a rule that requires an IP address and a Netmask, the Netmask will signify to what | Netmask defines how "large" a network is or if you're configuring a rule that requires an IP address and a Netmask, the Netmask will signify to what range of the Network the rule will apply to: | ||
<table class="nd-othertables"> | <table class="nd-othertables"> | ||
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<td>192.168.55.161</td> | <td>192.168.55.161</td> | ||
<td>255.255.255.255</td> | <td>255.255.255.255</td> | ||
<td>Only applies to 192.168.55.161 | <td>Only applies to 192.168.55.161</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||