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    Help with [int ipaddr or ipaddr/cdir]

    Scheduled Pinned Locked Moved General pfSense Questions
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    • J
      jeffnoone
      last edited by

      This is a basic question about network notation, but would appreciate help, or link to relatively easy tutorial on this

      I am entering some PC addresses in the Services/UPnp area under "User specified permissions"

      So I need to understand how to use "[int ipaddr or ipaddr/cdir]"

      I use a 192.168.0.x network at home with pfSense at 192.168.0.251
      My PC's start at 192.168.0.2 and upwards

      SO I believe these two are correct
      192.168.0.75/31 - specifies just one PC at 192.168.0.75
      192.168.0.0/24 - specifies all PC's, routers and printers in the 192.168.0.1-254 range

      BUt what does 192.168.0.75/32 mean
      ?
      And similarly , there seem to be options of 192.168.0.75/32 - any meaning?
      Also 192.168.0.75/30 or 192.168.0.75/29 or 192.168.0.75/28 - any meaning?

      Is there any way to name say three or four PC's in a consecutive range with this technique?

      Any help appreciated
      Jeff

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      • S
        SeventhSon
        last edited by

        I think this might help you:
        http://en.wikipedia.org/wiki/Subnetwork#Subnet_and_host_counts

        192.168.0.75/31 - specifies just one PC at 192.168.0.75
        192.168.0.0/24 - specifies all PC's, routers and printers in the 192.168.0.1-254 range

        If you want just one IP in your subnet it's a /32.

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