Firewall/proxy for test, but which?

[Alexander Holzer]

I search proxy/firewall for the test with connection method (for FTP):
"USER [email protected]@hostname" / "PASS [email protected]" to login.

I try Proxy+, but this program does not support this method of connection.
Only gateway with: "USER [email protected]" to login.

Thanks.

[Alexander Holzer]

I have it!
It is the correct login-sequence:

OPEN fireHostname [firePort]
USER [email protected]@hostname
PASS [email protected]
USER user
PASS pass