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Eric_Stewart_36's avatar
Eric_Stewart_36
Icon for Nimbostratus rankNimbostratus
Nov 06, 2018

Understanding Warnings In Log File

Hello

 

I am seeing these two warnings:

 

Tue Nov 6 10:57:46 EST 2018warningxxxxF5-1tmm1[12459]01260009Connection error: hud_ssl_handler:1230: codec alert (20)

 

Tue Nov 6 11:09:16 EST 2018warningxxxxF5-1tmm2[12459]01260009Connection error: ssl_passthru:4021: not SSL (40)

 

I am not sure how/where to start looking to see if this is an issue that I need to address and if so, how.

 

Could someone point me in the right direction?

 

Thanks!

 

Eric

 

application delivery
event logs
LTM
warnings

2 Replies

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  • Dario_Garrido's avatar
    Dario_Garrido
    Icon for MVP rankMVP
    Nov 07, 2018

    Usually, "Connection error: hud_ssl_handler:1230: codec alert" refers to errors during TLS Handshake. Client retry connections when handshake fails, so it shouldn't be an issue. If you have a lot of entries in a short space of time, maybe you should dig into this.

     

    REF - https://support.f5.com/csp/article/K10433354

     

    KR, Dario.

     

  • Surgeon's avatar
    Surgeon
    Ret. Employee
    Nov 07, 2018

    The 1s message indicates that SSL handshake to a vip was terminated due to critical error

     

    The 2d message indicates that traffic that hits a vip with ssl profile is not ssl

     

    It does not meant that you are getting any issues. It might me just random traffic that hit your vips. The 1st of all you need to verify if there is an actual issue with services while accessing the services via big-ip.