[IAG] After configuring password authentication, the PC cannot automatically connect to WIFI when it is turned on – the wireless WIFI detection traffic is intercepted by IAG
Problem Description
Configure password authentication for intranet users. It is found that the PC could automatically connect to the company's WIFI before, but now it will not automatically connect. You need to manually select the SSID to connect to the WiFi. There is no abnormality when manually connecting.
Process
- When the test user is set to not require authentication, the PC can automatically connect to WIFI normally. Then test the direct passthrough and find that it can automatically connect to WiFi after booting up. This indicates that the IAG intercepts the PC's data packets.
- Under password authentication, capture the data packets from PC through IAG. The results are as follows. When the PC is turned on, it will automatically www.msftconnecttest.com/connecttest.txt, and the IAG device will rst drop this packet.
308375b38808481478.png (59.49 KB) - Compared with the case of direct connection, the data packets can automatically connect to WiFi, and the interaction between the two ends is normal, which means that the PC needs to automatically connect to WiFi and needs to detect whether this domain name can communicate.
457325b3881cac376a.png (43.14 KB)
Root cause
The wireless detection data packets of Windows PC are intercepted, resulting in the inability to automatically connect to WIFI.
solution
Exclude www.msftconnecttest.com globally, and the test can automatically connect to WiFi normally.
Original Link
https://support.sangfor.com.cn/cases/list?product_id=22&type=1&category_id=5945&isOpen=true