KB88771
Published: March 13, 2020
Revision: 1.0

For built-in firewall rules, tun0 can't be set to "deny"


Applies To:

Firmware for GRV-EPIC-PR1

Versions Affected:

1.4.0 to current


Symptoms:

The GRV-EPIC-PR1 has the following firewall rules built in (you can find them by clicking Security > Firewall from the groov manage Home page):

  • groov EPIC
  • OptoMMP
  • ModbusTCP
  • PAC Controller
  • CODESYS Controller TCP
  • CODESYS Controller UDP
  • Ignition Edge
  • Designer Access To Ignition Edge

For any of these built-in rules, if eth0 is set to allow, when you try to set tun0 to deny, that change is not saved. tun0 remains set to allow.

Resolution:

Opto 22 has resolved this issue and will include the fix in an upcoming release.

Questions?

Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com


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