[AF] Intranet computers can access the domain name of the software enterprise WeChat, but mobile phones cannot – DNS cache problem
Problem Description
The computer and mobile phone are connected to the same WiFi. When using the software WeChat for Business, the computer can access a certain module, but the mobile phone cannot open it.
Warning Info
Effective troubleshooting steps
- The domain name visited is https://fdc-oaydd.powerchina.cn:8443/. By capturing packets at the internal and external network ports of AF and filtering port 8443, it is found that the destination IP address visited is a private network IP Address.
- Check if there is a DNS server in the intranet, and the IP obtained by resolving this domain name is also this:
Root cause
The intranet DNS record is incorrect. The PC browser will resolve to multiple DNSs, so it can be accessed normally, but there are abnormalities in mobile phone access.
solution
Modify domain name records on the intranet DNS Services
Original Link
https://support.sangfor.com.cn/cases/list?product_id=13&type=1&category_id=1183&isOpen=true