Network Connection to FTP with Suspicious URL Keywords

nomit vyas@xoxo

•updated Jun 24, 2026•0•0•3

This rule detects network connections made over FTP (port 21) where the remote URL contains keywords often associated with legacy or specific network services like 'NetWare', 'NFS', or 'Novell', combined with the presence of multiple spaces or specific 'whitespace' keywords. This combination could indicate unusual or potentially malicious activity, such as attempts to interact with outdated systems or obfuscate URLs.