Backend server in CSS

Hi
I am doing configuration for backend ssl, but it does not work.
When I config backend ssl, does the local server need config as ssl server? So they should install a certificate, and my CSS do not need a certificate?
Please advice if my understanding is correct?
Any comments will be appreciate
Thanks in advance

I think I have understood about question.
However, I have another problem now:
I have configured two backend services, one is alive and one is down. I believe both services are configured same.
the configuration is:
ssl-proxy-list ssl-slot3
backend-server 10
backend-server 10 ip address 10.1.1.51
backend-server 10 port 81
backend-server 10 server-ip 10.1.1.51
backend-server 10 cipher rsa-with-rc4-128-sha
backend-server 11
backend-server 11 ip address 10.1.1.52
backend-server 11 port 81
backend-server 11 server-ip 10.1.1.52
backend-server 11 cipher rsa-with-rc4-128-sha
service ssl-backend10
type ssl-accel-backend
protocol tcp
port 81
add ssl-proxy-list ssl-slot3
keepalive type ssl
keepalive port 443
ip address 10.1.1.51
active
service ssl-backend11
type ssl-accel-backend
protocol tcp
port 81
add ssl-proxy-list ssl-slot3
keepalive type ssl
keepalive port 443
ip address 10.1.1.52
active
# sh service summary | grep back
ssl-backend10 Alive 0 1 2 2
ssl-backend11 Down 0 1 255 0
I have checked both local servers, and port 443 for both of them are openned.
Could anyone advice me what problem it is? How to fix it?
For your information, I have configured content as:
content ssl-back
vip address 10.1.2.43
protocol tcp
port 81
url "/*"
add service ssl-backend10
add service ssl-backend11
balance leastconn
active
Any comments will be apprecited
Thanks in advance

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