Updated on July 29, 2022:
Add the Beta firmware for ER605 V2.
ER605_v2_2.0.2_Build 20220727 (Beta)
Note: Please be sure you have read the Beta Test Agreement before proceeding!
--------------------------------------------History--------------------------------------------
This Article Applies to:
ER605(UN)_V1_1.1.1_Build 20210723 and earlier firmware
ER7206(UN)_V1_1.1.1_Build 20210723 and earlier firmware
Issue Description/Phenomenon:
From time to time, we received feedback that Omada Gateway cannot pass GRC Shields UP test, when using the ShieldsUp Website (grc dot com) to scan the ports, some ports are showing "Closed" instead of "Stealth" as expected.
Available Solutions:
The R&D team has made a Beta firmware to optimize the issue above. After upgrading to the Beta firmware, Omada Gateway will discard and not reply to inbound TCP SYN attempts to the WAN port, which should comply with Shield!up requirements.
Welcome to download the Beta firmware below, and verify it does resolve your concern effectively.
ER605(UN)_v1_1.1.1_Build 20220117 (Beta)
ER7206(UN)_v1_1.1.1_Build 20220117 (Beta)
Note: Please be sure you have read the Beta Test Agreement before proceeding!
For ER605/ER7206 v1, the issue has been fixed in the official 1.2.1 firmware, please check for an update from Here.
For ER605 v2, please find the Beta firmware in the beginning of this post.
Thank you for your attention!
Feedback:
Please feel free to comment below after you install the Beta firmware above.
We look forward to your feedback on the test results of the Beta firmware!
Thank you in advance for your valued feedback!
TP-Link Support Team
Works great.
For anyone flashing if it doesnt seem to work, go to firewall > attack defense and make sure "Block TCP Scan (Stealth FIN/Xmas/Null)" is enabled and "Block TCP Scan with RST" is disabled to achieve the desired results
EDIT: The slow web interface bug (standalone mode) is back compared to the last couple of beta's 
