I am helping a friend who has a DIR-615 and is having a strange issue where they cannot use Cisco Jabber. The Jabber client gives a certificate error when attempting to connect to
loginp.webexconnect.com. So I tried to connect to that site via Chrome and I encountered a ERR_CERT_COMMON_NAME_INVALID error (an example is shown below). When they use their iPhone to tether for Internet access everything works fine.
I have tried various steps:
- Upgraded firmware from 8.02 to 8.05 B06
- Noticed the time and date weren't set so enabled NTP option
- Changed DNS to Cloudflare 1.1.1.1 & 1.0.0.1
- Tried disabling ALG for SIP under Firewall settings
- Tried disabling SPI under Firewall Settings
- Tried putting PC in DMZ
Any ideas on what else I can try? Recognize this is a legacy router so they should just go out and buy a new one but thought I would try and see if there were any ideas here. Just strange it only happens via the DIR-615. I didn't think it would interrupt SSL traffic.
Thanks!