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Hi and thanx for your answering.
at the moment we don't have any firewall in this branch but we have other branch same as this that we use Fortigate 111C.
We want to use Opnsense as a firewall and we want to apply some firewall rules with IPS. we want to use snort as an IPS.
This branch of our compony have about 20 computers with 4 or 5 Mb traffic at most.
Unfortunately I cannot understand your mean about threat model. I'm sorry.
I will be pleasure if you can help me.
best regards

perhaps I couldn't explain  my mean well.
In fact I want to introduce OPNsense to my company as an opensource  firewall. I should  to assure my boss about security of OPNsense. My boss ask me if there is a way to test security functionality when start the device to working or in duration of working .for example does opensense check  security algorithms that they work correctly before using it?

that's right, How can I test and  validate this function's operation?
In fact how the opnsnese  can validate it when turn on by itself .How is its mechanism?

security function like Cryptographic algorithms , digital signature algorithms , hash functions ,random bit generators etc
Tanx

Hi
How the opnsense can check security function operation?

Hi Dears.
Can you tell me what is the Destroy cryptographic keys method  ?(FCS_CKM.4.1) in opnsense?

For example in the Fortinet  Fortigate firewall  the destroy cryptographic keys in accordance with a specified cryptographic key destruction method is zeroization.