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Virtual Service/Server Port-Protocol and Respective Service Group Port-Protocol


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Hi All, 

 

Here with a query related to Virtual Server Port and Service Group port.

 

Scneraio#1 :  Virtual Server  with port 443 (i.e Protocol-SSL to be Choose from drop down) and backend servers is/are listening on port 8080 not on 443 actually. What should be the Protocol selected on Service group created for those servers.  Will that be SSL or HTTP ?

 

If backend server listening on port 443 then , I know Protocol on Service Group would be SSL.

 

Scenario#2 :    Virtual Server on Port-40 (HTTP) (Protocol - HTTP to be select from down drop) , But backend servers listening on port 8080 not on port 80, What should be the protocol selected on Service Group created for those servers , HTTP or TCP or Any other .   

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So the protocol isn't about the port (for vservers/services) but about identifying the traffic type so the ADC can do traffic aware things.

IF the vserver is SSL, it means the underlying protocol is HTTP-based AND the ADC can do SSL termination.

Therefore the backend service/servicegroup has to be either SSL (also web-based and allows for end-to-end encryption, regardless of backend port) or it has to be HTTP based.

Then benefit is that you can present a public port to your users via the vserver and map to the backend port via the service.

 

If the traffic was-tcp based, then you would declare TCP frontend/TCP backend. IF encrypted, you'd have a choice of SSL_TCP/TCP (for offload) vs SSL_TCP/SSL_TCP (for end to end with ssl termination in the middle.)

 

The ADC can deal with different front-end (vserver) handling from backend (service/servicegroup) handling. So port changes are fine; but the protocol has to be specified correctly.

But you can't mix protocols like HTTP frontend to TCP backend....

 

 

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