Zenz
Jan 29, 2020Altostratus
Solved
[SOLVED] Connection error: ssl_null_parse:1387: record protocol version incorrect
Hi, We have this error suddenly in our environment.. We think the party connecting to us (AKAMAI) might changed something.. to understand what the exact error is we are looking for the erro...
- Jan 30, 2020
Hi Lidev,
thx again for the reply..
we have identified the problem.
it was a routing problem, where the response of the backend server did not reach the loadbalancer anymore
so TCP and SSL handshake went fine between akamai and our origin (VIP on F5), however, the loadbalancer then wanted to setup the connection with the http server starting with the tcp handshake, where the ack was not received by the loadbalancer anymore, as someone created a VM in the same network with the source IP of the loadbalancer.
some side note:
our healthchecks/monitoring from F5 to server are done with different source IP's then the actual traffic is using.