Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

marksantcroos's avatar
marksantcroos
Icon for Nimbostratus rankNimbostratus
May 01, 2026

signature in pre_inspection and client_data payload

Hi,

I would like to enable the openconnect client to connect to my corporate firewall. Currently I'm using the f5fpc client which is somewhat limited.

I've figured out most of the protocol, but I'm stuck with populating the signature field in the payload that is (initially) passed to my.logon.php3 (and consequentally) to my.activation.php3.

 

Anyone who can shine a light on this or can point me to documentation or specification?

 

Thanks!

 

Regards,

 

Mark 

 

1 Reply

  • Jeff_Granieri's avatar
    Jeff_Granieri
    Icon for Employee rankEmployee
    May 19, 2026

    Hi marksantcroos​ ,

     

    I am not familiar with this,  If you could share a sanitized snippet of the current payload and where you want signature field in the payload it might be helpful to see if we have a method to do this.