You should install the panel on the server with the latest minor version of the operating system.Do not change the major version of the OS.
We strongly recommend a clean install of ISPmanager. You should install a minimal version of the operating system, all the services that ISPmanager requires will be installed automatically during software installation.
To ensure the best software performance, do not connect any third-party repositories.
When installing ISPmanager on an OVZ virtual server, check that the version of the OS kernel on the host server is not less than 2.6.32-042stab134.
The server with the control panel must use the static IP address specified in the network interface configuration file. If the IP address is assigned to the server using DHCP, the correct operation of the control panel is not guaranteed.
Open the following ports to allow incoming connections:
20/tcp — to send data through FTP;
22/tcp — for remote access to a server through SSH;
110, 143, 993, 995, 587, 465, 25/tcp — to send and receive emails;
80, 443/tcp — to handle user requests to websites on the server with ISPmanager;