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Forum Discussion

Hygor_Nogueira_'s avatar
Hygor_Nogueira_
Icon for Nimbostratus rankNimbostratus
Jun 16, 2016

Connection error: ssl_passthru:3778: not SSL (40)

I'm receiving the following errors on my LTM:

 

tmm3[10956]: 01260009:4: Connection error: ssl_passthru:3778: not SSL (40)

 

tmm2[10956]: 01260009:4: Connection error: ssl_passthru:3778: not SSL (40)

 

tmm2[10956]: 01260009:4: Connection error: ssl_passthru:3778: not SSL (40)

 

tmm[10956]: 01260009:4: Connection error: ssl_passthru:3778: not SSL (40)

 

tmm1[10956]: 01260009:4: Connection error: ssl_passthru:3778: not SSL (40)

 

tmm2[10956]: 01260009:4: Connection error: ssl_passthru:3778: not SSL (40)

 

I really appreciate some help to solve this issue. I have handling this case with F5 support, but it has been so difficult to find some root cause for that error. I receive some information that it would be caused by expired certificates, but all of them have already been excluded.

 

Thank you.

 

application delivery
LTM

3 Replies

  • Chris_Grant's avatar
    Chris_Grant
    Icon for Employee rankEmployee
    Jun 16, 2016

    This error is thrown when non ssl traffic is sent to a Virtual Server that has a clientssl profile on it. In all likelihood it can safely be ignored.

     

  • VGF5's avatar
    VGF5
    Icon for Cumulonimbus rankCumulonimbus
    Sep 29, 2017

    Hi,

     

    How did you find out that virtual server when you get these errors ?

     

  • Chris_Grant's avatar
    Chris_Grant
    Icon for Employee rankEmployee
    Oct 05, 2017

    Shri, unfortunately the error doesn't identify the virtual server in question. I suppose you could put a redirect irule on your port 80 virtual servers (creating them if needed) in which case this error would never happen because a plain text inquiry to your virtual server would be redirected to port 443.