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

Forum Discussion

NikDha_372491's avatar
NikDha_372491
Icon for Nimbostratus rankNimbostratus
Feb 25, 2019

A TLS Handshake from an application returns handshake_failure from Big-IP

I have a .Net 4.6.x service running on a Windows 2016 server which tries to connect to a VIP on a F5. SSL terminates on the F5. A TLS Handshake: [Client Hello] from an application returns an [Alert...
application delivery
big-ip
devops
LTM
tls handshake failure
jaikumar_f5's avatar
jaikumar_f5
Icon for Noctilucent rankNoctilucent
Feb 25, 2019

Can you share more details, like

tmsh list ltm profile client-ssl 

openssl s_client -connect VIP:PORT -tls1

openssl s_client -connect VIP:PORT -tls1_1

openssl s_client -connect VIP:PORT -tls1_2

Share us the ssldump trace too.