VShell Server is a secure file transfer and remote access server that supports multiple protocols including SSH2, SFTP, FTPS, and HTTPS. The server provides secure data transmission with authentication and encryption capabilities. The product offers fine-grained access control for users and groups, allowing administrators to grant or deny access to specific services such as shell, SFTP, SCP, FTP, port forwarding, and HTTP/HTTPS. Virtual root directories enable administrators to restrict user access to specific directories, with Windows ACL-based assignment support. VShell includes an internal user database that eliminates the need for system accounts, and integrates with Windows Active Directory and LDAP for authentication. The server supports various authentication methods including public-key, Kerberos, and two-factor authentication for SSH2 connections. The trigger system enables automated responses to events such as file uploads, downloads, files added to folders, and failed logon attempts. The RunAs Commands feature allows less privileged users to execute specific commands or scripts requiring elevated privileges. VShell Monitor provides real-time connection monitoring, displaying active connections to the server. Logging capabilities include output to VShell log files, Windows system log, or remote syslog/syslog-ng servers, with configurable message groups. The server runs on Windows, Linux, and macOS platforms, supporting physical servers, virtual machines, and cloud-based deployments. Command-line utilities include vsftp for interactive SFTP file transfer, vsh for shell access, vcp for file transfer, and vkeygen for key generation. Windows deployments include the VRALIB COM API for SSH2 connection scripting.