Forum Discussion
NimbostratusConnection ERROR "Connection error: ssl_passthru:3994: not SSL (40) "
hi all,
currently i encounter"Connection error: ssl_passthru:3994: not SSL (40) " and try to investigate the cause of this error. is there anywhere to check the detail of this error?. or anything to i miss in configure part at virtual server configuration part? refer to below for error when i run 'show / sys log ltm'
Leonardo_SouzaCirrocumulus
Are you running v12 or above? If yes, here is the reason you are getting this in log messages:
https://support.f5.com/csp/article/K09322055
Anyway, that does not explain the error, so you need to take a tcpdump. The tcpdump will tell you what virtual server is generating the error, and also what is the traffic flowing.
https://support.f5.com/csp/article/K411
https://devcentral.f5.com/articles/getting-started-with-the-f5-wireshark-plugin-on-windows
- Heinrichm_18951
Cirrus
Which health monitor are you running? I see that it goes down, and I'm not certain that it is the forward of traffic that actually fails. You could always try to change it to tcp_half_open (temporarily) to see if this removes the error messages and if the application works as intended afterwards.
- zarev_316815
hi heinrichm, Health monitor i use as below to monitor pool with port 6030.
- Heinrichm_18951
Could you share the configuration of the monitor? If it is just trying to complete the TCP handshake you'll probably have to go with Leonardo's answer.