# Server Certificate Common Name

**URL:** <https://discourse.haproxy.org/t/server-certificate-common-name/2186>\
**Category:** Help!\
**Created:** [March 2, 2018, 8:14am UTC](https://discourse.haproxy.org/t/server-certificate-common-name/2186 "2018-03-02T08:14:23Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Racco](https://avatars.discourse-cdn.com/v4/letter/r/a9adbd/32.png) [@Racco](https://discourse.haproxy.org/u/Racco)\
**Post date:** [March 2, 2018, 8:14am UTC](https://discourse.haproxy.org/t/server-certificate-common-name/2186/1 "2018-03-02T08:14:23Z")

</div>

Hello Guys!

I would just like to now if it is possible to define a ACL by the CN of the Backend Server.  
So if a Client connects to my proxy, everything is fine and the connection will come to the backend. But there I want to proof if the CN of the Server’s Cert is in a list.  
ssl\_c\_i\_dn(CN) - this fetch method is the right thing i need, but unfortunately for the cert of the client…

I hope u can help me!

Peace.