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johnlloyd_13
Explorer III
March 5, 2025
Question

FortiManager Disable Subnet Mask Auto Fill

  • March 5, 2025
  • 3 replies
  • 957 views

hi,

i recently encountered a network issue and found out the subnet mask was wrong (/32) and it should be a /28 instead.

i suspect i've overlooked the subnet mask 255.255.255.255 it auto created.

is there a way to disable the CIDR subnet mask auto fill in FMG? i fear i might make the same mistake again in the future.

 

3 replies

Jean-Philippe_P
Staff & Editor
Staff & Editor
March 7, 2025

Hello johnlloyd_13, 

 

Thank you for using the Community Forum. I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible. 

 

Thanks, 

Jean-Philippe - Fortinet Community Team
Jean-Philippe_P
Staff & Editor
Staff & Editor
March 10, 2025

Hello,

 

We are still looking for an answer to your question.

 

We will come back to you ASAP.

 

Thanks,

Jean-Philippe - Fortinet Community Team
tnesh
Staff & Editor
Staff & Editor
March 13, 2025

Hi @johnlloyd_13 , 

 

Thank you for your inquiry on our forum.

As checked, and unfortunately, the auto-fill for the subnet mask cannot be disabled.

 

We hope this clarifies your inquiry.

 

Thanks. 

Thivenesh