HP-UX Reference (11i v1 05/09) - 1M System Administration Commands A-M (vol 3)

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ftpd(1M) ftpd(1M)

2 The requested action is complete. The server is ready for a new request.

3 The command has been accepted, but the requested action requires more information.

4 The command was not accepted, the requested action failed, but the error condition is tem-

porary and the action can be requested again.

5 The command was not accepted, the requested action failed, and the error condition would

most likely occur again if the same command sequence is repeated.

The second digit indicates the functional area that the message addresses. The values of the second digit

and the interpretations of these values are:

0 Syntax. A message with a 0 for the second digit indicates that a syntax error occurred.

1 Information. A message with a 1 as the second digit indicates that the message is in reply to

a request for information.

2 Connections. A message with a 2 as the second digit indicates that the message is a reply to

a request for control and data connection information.

3 Authentication and accounting. A message with a 3 as the second digit indicates that the

message is a reply to a login or accounting procedure.

4 Not currently speciﬁed.

5 File system. A message with a 5 as the second digit indicates that the text following the

number contains information concerning the status of the server ﬁle system.

The third digit provides a further clariﬁcation of the information supplied by the second digit. Following

are several examples of messages. Note that ftpd’s replies match the number but not the text.

110 Restart marker reply. MARK yyyy=mmmm where yyyy is a user process data stream

marker, and mmmm is

ftpd’s equivalent marker

120 Service ready in nnn minutes

200 Command okay

211 System status, or system help reply

212 Directory status

230 User logged in, proceed

250 Requested ﬁle action okay, completed

331 User name okay, need password

350 Requested ﬁle action pending further information

425 Cannot open data connection

451 Requested action aborted: local error in processing

500 Syntax error, command unrecognized or command line too long

530 Not logged in

550 Requested action not taken; ﬁle unavailable, not found, no access

WARNINGS

The password is sent unencrypted through the socket connection.

Anonymous FTP is inherently dangerous to system security.

DEPENDENCIES

Pluggable Authentication Modules (PAM)

PAM is an Open Group standard for user authentication, password modiﬁcation, and validation of accounts.

In particular, pam_authenticate() is invoked to perform all functions related to login. This includes

retrieving the password, validating the account, and displaying error messages.

AUTHOR

ftpd was developed by the University of California, Berkeley and the Washington University, St. Louis,

Missouri.