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SKadish's avatar
SKadish
Brass Contributor
Jan 24, 2024
Solved

Custom IP address ranges in Defender for Cloud Apps

Is there any reason that the IP Address Ranges screen in for settings Cloud Apps won't allow a /29 range?  It only allows /8, /16, /24, and /32.  What's the rationale?
  • yomaddy's avatar
    yomaddy
    Feb 19, 2024
    Issue resolved
Ryan0112's avatar
Ryan0112
Copper Contributor
Jan 28, 2024

SKadish - I'm also seeing the same in multiple M365 Tenants. Attempted to add a /23 which shows "IP address is not valid". Last time I was able to do this was via the classic defender for cloud apps GUI but since the re-direct this portal is unavailable.

SKadish's avatar
SKadish
Brass Contributor
Jan 29, 2024
I opened a ticket about this, and support confirmed the behavior. It seems like it will need to be re-engineered, so let's hope that doesn't take too long.
  • yomaddy's avatar
    yomaddy
    Copper Contributor
    Feb 15, 2024
    Do you have any update on this ?
    • SKadish's avatar
      SKadish
      Brass Contributor
      Feb 15, 2024
      Not really. I had a support case open, but was told that this was the expected behavior, because they expect people to use this feature for internal IP blocks. It may change, but no idea if or when.
      • yomaddy's avatar
        yomaddy
        Copper Contributor
        Feb 15, 2024
        It will start working properly after 20th February, let's wait for update!

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