WU-FTPD 2.6.1 release notes (5900-1739, May 2011)

Table 3 New Options in WU-FTPD 2.6.1 (continued)
DescriptionOption
These options run the daemon in standalone operation mode.-s and -S
These options override the control and the data port numbers that is used by the daemon.-c<ctrl port> and
-C<data port>
For the HP-UX 11i v1 operating system, this option replaces the sendfiletransfer option
in the /etc/ftpd/ftpaccess configuration file.
-U
This option prints the copyright and the version information for all utilities (ftpcount,
ftprestart, ckconfig, ftpwho, privatepw and ftpshut)
-V
For more details on the new command-line options in WU-FTPD 2.6.1, type man 1M ftpd at the
HP-UX prompt.
IPv6 support
To support IPv6 functionality, you must modify the /etc/inetd.conf file as follows:
ftp stream tcp6 nowait root /usr/bin/ftpd ftpd -l
However, if you specify tcp instead of tcp6, FTP operates in the IPv4 mode.
Following are the features that support IPv6:
• Implementation of RFC 2428 (FTP Extensions for IPv6 and NATs)
This RFC specifies a method by which FTP clients and server exchange data connection
information, such as port, host address, and type of protocol family, for both IPv4 and IPv6
addresses.
FTP uses EPRT and EPSV instead of PORT and PASV, respectively, for IPv6 connections.
◦ EPRT - Extended Port
This command specifies a host port for both IPv4 and IPv6 connections.
Example 10 ERPT Command Output for IPv6 and IPv6 Connections
The following displays the output for the EPRT command for both IPv6 and IPv6
connections.
For IPv4:
------> EPRT 1 132.235.1.2 50934
For IPv6:
------> EPRT 2 fe80::260:b0ff:fec1:7b2f 50934
◦ EPSV - Extended Passive
This command requests a server to listen on a data port and wait for a connection. The
response to this command includes only the TCP port number of the listening connection.
Example 11 EPASV Command Output
An example for the EPASV command is as follows:
ftp> passive
Passive mode on.
------> EPSV
229 Entering Extended Passive Mode ( 9495 ).
WU-FTPD 2.6.1 features 29