Merge pull request #224380 from yairzarka/patch-20

Update concept-supported-protocols.md

Author: prmerger-automator[bot]

articles/defender-for-iot/organizations/concept-supported-protocols.md

@@ -35,6 +35,7 @@ Defender for IoT can detect the following protocols when identifying assets and
 |**Microsoft**     | Horizon community dissectors<br> Horizon proprietary dissectors (developed by customers)        |
 |**Mitsubishi**     |   Melsoft / Melsec (Mitsubishi Electric)      |
 |**Omron**     |  FINS       |
+|**OPC**     |  UA       |
 |**Oracle**     |   TDS<br> TNS      |
 |**Rockwell Automation**     |   ENIP<br> EtherNet/IP CIP (including Rockwell extension)<br> EtherNet/IP CIP FW version 27 and above      |
 |**Schneider Electric**     | Modbus/TCP<br> Modbus TCP–Schneider Unity Extensions<br> OASYS (Schneider Electric Telvant)<br> Schneider TSAA        |