I'm trying to access pxe from a device. Both assigned imaging work and manual (CTRL+ALT) fails to bring me to the imaging environment. Checking the log file /var/opt/novell/log/zenworks/preboot/novell-pbserv.log i see entries like this.

ZENIMGWEB-CSCKT Failed to connect to server fszcm01 at port 443. Error code: 13. Can not verify the identity of the server.

I've changed this servers name / DNS name so i'm guessing that ssl trafic fails since the certificate dns name does not match its current name. Is there a way to generate a new certificate without reinstalling the server?

The server uses the default ports 80 and 443.