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Saad_Malik_2068's avatar
Saad_Malik_2068
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Jun 23, 2018

TLS handshake in passthrough scenario

Hi All,   This might be a basic question but i would like to know how the SSL/TLS handshake takes place in a SSL passthrough scenario. If we are not doing the offloading, there is no certificate ...
BIG-IP
LTM
security
ssl handshake
ssl passthrough
tls
AceDawg1's avatar
AceDawg1
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You are correct. In a scenario where the load balancer does not perform ssl encryption/decryption (offloading), ssl negotiation is performed directly between the client and backend pool members (servers).

 

A typical F5 configuration would be comprised of a virtual server that listens on port 443, server type of standard or layer 4 and backend pool members listening on port 443.

 

AceDawg1's avatar
AceDawg1
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Jun 24, 2018

If you are planning to use source IP persistence, my recommendation would be to use performance layer 4 as the virtual server type.

 

While F5 doesn’t have an official document on this setup, you’ll find that DevCentral is very useful with these types of questions.

 

Feel free to vote up my answer if this has been useful.