$ xfreerdp /f /rfx /cert-ignore /v:farm.company.com /d:company.com /u:administrator /p:

freerdp_set_last_error 0x2000C
Error: protocol security negotiation or connection failure

/g:<gateway>[:port] Gateway Hostname
/gu:[<domain>&#93;<user> or <user>[@<domain>] Gateway username
/gp:<password> Gateway password
/gd:<domain> Gateway domain

$ xfreerdp /f /rfx /cert-ignore /v:farm.company.com /d:company.com /g:rds.company.com /u:administrator /p:

Could not open SAM file!
Could not open SAM file!
Could not open SAM file!
Could not open SAM file!
rts_connect: error! Status Code: 401
HTTP/1.1 401 Unauthorized
Content-Type: text/plain
Server: Microsoft-IIS/7.5
WWW-Authenticate: Negotiate
WWW-Authenticate: NTLM
WWW-Authenticate: Basic realm="rds.company"
X-Powered-By: ASP.NET
Date: Wed, 02 Jul 2014 12:36:41 GMT
Content-Length: 13

$ xfreerdp /f /rfx /cert-ignore /v:farm.company.com /d:company.com /u:administrator /p:

/usr/local/bin/xfreerdp /f /rfx /cert-ignore /v:myhostip /u:mywindowsuser /p:mypassword /sec:rdp