ISPmanager 5 Lite Documentation

Server requirements

This is documentation for an outdated product. See the current documentation


We recommend that you install a panel on a fault-tolerant virtual or dedicated server with hypervisor virtualization. ISPmanager must not be installed with DNSmanager or IPmanager.

Hardware requirements

ISPmanager consumes low system resources, websites with databases and mailboxes hosted on your server, however, may consume much resources. 

Creating a large number of websites in the control panel (more than 50-100 domains) can lead to disruptions in the stability of ISPmanager Lite, regardless of the characteristics of the server.
ComponentRequirements for the control panelRequirements for the control panel and up to 10 websitesRequirements for the control panel and more than 10 websites
CPU512 MHz1 GHzfrom 2 GHz
Cores11from 2
RAM1024 Mbfrom 2 Gbfrom 3 Gb
Disk space10 Gbfrom 20 Gbfrom 50 Gb
When using alternative versions of databases on a server with ISPmanager, at least 4 GB of RAM is required.

Software requirement

Supported operating systems (x64):

  • CentOS 7 (recommended);
  • CentOS 8 (until December 31, 2021);
  • CentOS Stream (until December 31, 2021);;
  • Debian 9, 10;
  • Ubuntu 18.04, 20.04;

The recommended file system is XFS.

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.

Firewall settings

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;
  • 1500/tcp —to access the ISPmanager interface;
  • 53/tcp, 53/udp — for domain name servers;
  • 3306/tcp — for the database server.