Precisei usar o Wget com o FTP autenticado hoje e lendo o manual achei a solução.
No console digite:
wget –user=usuario –password=senha ftp://ftp.dominio.com/file.extensão
Parte do texto do Man do Wget.
–user=user
–password=password
Specify the username user and password password for both FTP and
HTTP file retrieval. These parameters can be overridden using the
–ftp-user and –ftp-password options for FTP connections and the
–http-user and –http-password options for HTTP connections.
