There are different ways to limit the number of simultaneous FTP connections:
1. Control panel: Some web hosting companies offer a control panel that allows users to set limits on the number of simultaneous FTP connections.
1. FTP server settings: Most FTP servers have settings that allow administrators to limit the number of simultaneous connections. For example, in the vsftpd FTP server, the “max_clients” and “max_per\_ip” settings can be used to set these limits.
1. Firewall: Configuring a firewall to only allow a certain number of FTP connections can also limit the number of simultaneous connections. This is achieved by setting rules that restrict incoming FTP connections.
1. Third-party software: There are also third-party software available that can monitor and limit the number of simultaneous FTP connections. These programs are designed to run on the same server as the FTP server and can be configured to limit the number of connections based on different criteria.