Forum Discussion
Zenz
Altostratus
Altostratus[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...
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.
ZenzAltostratus
AltostratusHi 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.
jaikumar_f5
MVP
MVPPlease mark your thread as solved then. You can mark your own answer.