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NMC2 Does Not Support RSA512 Certificates Using NMCSecurityWizardCLI

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Posted: 3 weeks ago

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Posted: 3 weeks ago

NMC2 Does Not Support RSA512 Certificates Using NMCSecurityWizardCLI

I have been Googling like crazy as well as talking to technical support to get information on why when using the NMCSecurityWizardCLI. I was using 1.0.1 as well as 1.0.4. Finally had to contact support to access 1.0.0. Here is what I found.

 

1.0.0 - Works correctly as it should.

1.0.1 - Breaks when trying to --import a certificate. Something is wrong with the csl32.dll.

1.0.4 - It does work but it doesn't include access to SAN objects of which many needs.

 

So even after using 1.0.0 and creating a correct .p15 certificate when I try to import into the NMC2 I have on my 8K UPS. The Model is AP9537SUM which is also equivalent to the AP9630/AP9631. When I do the import just as many posts on the Internet show is that the certificate shows "Loading Certificate" forever. 

 

After doing a lot of troubleshooting with support we found the issue is the Signature Algorithm on my domain. I am running a Windows Server 2019 domain with a CA and my CA has a 512RSA algorithm enforced. Because of this the import is not working. The NMC2 and NMC3 only supports 256RSA algorithm according to support. I would have to downgrade the security algorithm of my domain to establish a certificate for this device. 

 

I believe this the issue everyone has been having for the past many years. If you found a way around this let me know. We don't use OpenSSL and will not install it. We are also running this on an offline network so Internet Access is not usable either.

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  • rsa
  • Windows Server 2019
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