Go to Server > IP Addresses and click Add
New IP Address.
Select the network interface for the new IP from the Interface
drop-down box. This will be eth1/Public Network for your SoftLayer server,
however all network cards installed
on your server are shown in this drop-down box.
Enter the IP address and subnet mask in the
corresponding box (e.g., 123.123.123.123/16).
Select the type of the new IP address, shared or
exclusive, using the IP type radio button.
From the drop-down box, select the SSL certificate for
the new IP address. You can select the following certificates:
Default certificate - the certificate that comes with the Plesk
distribution package. However, this certificate is not recognized by web
browsers as it is not signed by a Certificate Authority (a warning
message appears). The default certificate is used to provide access to
the control panel via the https protocol (https://<Plesk Server name
or IP>:8443/).
Other certificates - the certificates (self-signed or signed by a
Certificate Authority) that you added to the repository of SSL
certificates.
Select the FTP over SSL check box if you want to
enable the ability to use secure FTP connection for the domain on an
exclusive IP address.
Note. To enable secure FTP connection, the FTP server installed
on your Plesk server must support FTP over SSL. Currently, only Gene6 and
Serv-U FTP servers support FTP over SSL.