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NMC2 self-signed certificate expired - "connection reset" in Web UI

NMC2 devices with a self-signed SSL certificate refuse a web connection. Logging in via serial/telnet/SSH still work.

Product Lines:
  • Network Management Card 2 (NMC2) - AP9630/AP9630CH, AP9631/AP9631CH, AP9635/AP9635CH
Devices with an embedded Network Management Card 2 include (but are not limited to): 2G Metered/Switched Rack PDUs (AP86XX, AP88XX, AP89XX), AP44xx RackATS, Netbotz 250,  Certain Audio/Video Network Management Enabled products.

To fix this issue, a device would need to be upgraded to v7.0.4. After upgrading, the SSL certificate will need to be deleted from the NMC; there are a few methods that can be used:

Deleting the certificate via Web UI
  • Navigate to Configuration --> Network --> Web --> SSL Certificate
  • Select "remove", then "apply"
  • Reboot the NMC
Deleting the certificate via CLI
  • Open a Telnet/SSH session
  • Enter "cd ssl"
  • Enter "dir", should return with a file that has a .p15 extension
  • Delete the file with the command "delete <filename>.p15"
  • Reboot the NMC with the "reboot" command
Deleting the certificate via FTP
  • Open an FTP session
  • Enter "cd ssl"
  • Enter "dir", should return with a file that has a .p15 extension
  • delete the file with the command "delete <filename>.p15"
  • Close the FTP session, then reboot the NMC manually.

If a user wishes to remain on a firmware revision older than v7.0.4, the certificate can be deleted and the card rebooted to fix the issue, however the new certificate generated will be valid for only 1 year - the process would need to be repeated every year.

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