1 files changed, 0 insertions, 274 deletions
diff --git a/contrib/pf/ftp-proxy/ftp-proxy.8 b/contrib/pf/ftp-proxy/ftp-proxy.8
deleted file mode 100644
index e68bdde495ccf..0000000000000
--- a/contrib/pf/ftp-proxy/ftp-proxy.8
+++ /dev/null
@@ -1,274 +0,0 @@
-.\"	$OpenBSD: ftp-proxy.8,v 1.40 2004/03/16 08:50:07 jmc Exp $
-.\"
-.\" Copyright (c) 1996-2001
-.\"	Obtuse Systems Corporation, All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\" 3. Neither the name of the University nor the names of its contributors
-.\"    may be used to endorse or promote products derived from this software
-.\"    without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY OBTUSE SYSTEMS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL OBTUSE OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.Dd August 17, 2001
-.Dt FTP-PROXY 8
-.Os
-.Sh NAME
-.Nm ftp-proxy
-.Nd Internet File Transfer Protocol proxy server
-.Sh SYNOPSIS
-.Nm ftp-proxy
-.Op Fl AnrVw
-.Op Fl a Ar address
-.Op Fl D Ar debuglevel
-.Op Fl g Ar group
-.Op Fl M Ar maxport
-.Op Fl m Ar minport
-.Op Fl t Ar timeout
-.Op Fl u Ar user
-.Sh DESCRIPTION
-.Nm
-is a proxy for the Internet File Transfer Protocol.
-The proxy uses
-.Xr pf 4
-and expects to have the FTP control connection as described in
-.Xr services 5
-redirected to it via a
-.Xr pf 4
-.Em rdr
-command.
-An example of how to do that is further down in this document.
-.Pp
-The options are as follows:
-.Bl -tag -width Ds
-.It Fl A
-Permit only anonymous FTP connections.
-The proxy will allow connections to log in to other sites as the user
-.Qq ftp
-or
-.Qq anonymous
-only.
-Any attempt to log in as another user will be blocked by the proxy.
-.It Fl a Ar address
-Specify the local IP address to use in
-.Xr bind 2
-as the source for connections made by
-.Nm ftp-proxy
-when connecting to destination FTP servers.
-This may be necessary if the interface address of
-your default route is not reachable from the destinations
-.Nm
-is attempting connections to, or this address is different from the one
-connections are being NATed to.
-In the usual case this means that
-.Ar address
-should be a publicly visible IP address assigned to one of
-the interfaces on the machine running
-.Nm
-and should be the same address to which you are translating traffic
-if you are using the
-.Fl n
-option.
-.It Fl D Ar debuglevel
-Specify a debug level, where the proxy emits verbose debug output
-into
-.Xr syslogd 8
-at level
-.Dv LOG_DEBUG .
-Meaningful values of debuglevel are 0-3, where 0 is no debug output and
-3 is lots of debug output, the default being 0.
-.It Fl g Ar group
-Specify the named group to drop group privileges to, after doing
-.Xr pf 4
-lookups which require root.
-By default,
-.Nm
-uses the default group of the user it drops privilege to.
-.It Fl M Ar maxport
-Specify the upper end of the port range the proxy will use for the
-data connections it establishes.
-The default is
-.Dv IPPORT_HILASTAUTO
-defined in
-.Aq Pa netinet/in.h
-as 65535.
-.It Fl m Ar minport
-Specify the lower end of the port range the proxy will use for all
-data connections it establishes.
-The default is
-.Dv IPPORT_HIFIRSTAUTO
-defined in
-.Aq Pa netinet/in.h
-as 49152.
-.It Fl n
-Activate network address translation
-.Pq NAT
-mode.
-In this mode, the proxy will not attempt to proxy passive mode
-.Pq PASV or EPSV
-data connections.
-In order for this to work, the machine running the proxy will need to
-be forwarding packets and doing network address translation to allow
-the outbound passive connections from the client to reach the server.
-See
-.Xr pf.conf 5
-for more details on NAT.
-The proxy only ignores passive mode data connections when using this flag;
-it will still proxy PORT and EPRT mode data connections.
-Without this flag,
-.Nm
-does not require any IP forwarding or NAT beyond the
-.Em rdr
-necessary to capture the FTP control connection.
-.It Fl r
-Use reverse host
-.Pq reverse DNS
-lookups for logging and libwrap use.
-By default,
-the proxy does not look up hostnames for libwrap or logging purposes.
-.It Fl t Ar timeout
-Specifies a timeout, in seconds.
-The proxy will exit and close open connections if it sees no data
-for the duration of the timeout.
-The default is 0, which means the proxy will not time out.
-.It Fl u Ar user
-Specify the named user to drop privilege to, after doing
-.Xr pf 4
-lookups which require root privilege.
-By default,
-.Nm
-drops privilege to the user
-.Em proxy .
-.Pp
-Running as root means that the source of data connections the proxy makes
-for PORT and EPRT will be the RFC mandated port 20.
-When running as a non-root user, the source of the data connections from
-.Nm
-will be chosen randomly from the range
-.Ar minport
-to
-.Ar maxport
-as described above.
-.It Fl V
-Be verbose.
-With this option the proxy logs the control commands
-sent by clients and the replies sent by the servers to
-.Xr syslogd 8 .
-.It Fl w
-Use the tcp wrapper access control library
-.Xr hosts_access 3 ,
-allowing connections to be allowed or denied based on the tcp wrapper's
-.Xr hosts.allow 5
-and
-.Xr hosts.deny 5
-files.
-The proxy does libwrap operations after determining the destination
-of the captured control connection, so that tcp wrapper rules may
-be written based on the destination as well as the source of FTP connections.
-.El
-.Pp
-.Nm ftp-proxy
-is run from
-.Xr inetd 8
-and requires that FTP connections are redirected to it using a
-.Em rdr
-rule.
-A typical way to do this would be to use a
-.Xr pf.conf 5
-rule such as
-.Bd -literal -offset 2n
-int_if = \&"xl0\&"
-rdr pass on $int_if proto tcp from any to any port 21 -> 127.0.0.1 port 8021
-.Ed
-.Pp
-.Xr inetd 8
-must then be configured to run
-.Nm
-on the port from above using
-.Bd -literal -offset 2n
-127.0.0.1:8021 stream tcp nowait root /usr/libexec/ftp-proxy ftp-proxy
-.Ed
-.Pp
-in
-.Xr inetd.conf 5 .
-.Pp
-.Nm
-accepts the redirected control connections and forwards them
-to the server.
-The proxy replaces the address and port number that the client
-sends through the control connection to the server with its own
-address and proxy port, where it listens for the data connection.
-When the server opens the data connection back to this port, the
-proxy forwards it to the client.
-The
-.Xr pf.conf 5
-rules need to let pass connections to these proxy ports
-(see options
-.Fl u , m ,
-and
-.Fl M
-above) in on the external interface.
-The following example allows only ports 49152 to 65535 to pass in
-statefully:
-.Bd -literal -offset indent
-block in on $ext_if proto tcp all
-pass  in on $ext_if inet proto tcp from any to $ext_if \e
-    port > 49151 keep state
-.Ed
-.Pp
-Alternatively, rules can make use of the fact that by default,
-.Nm
-runs as user
-.Qq proxy
-to allow the backchannel connections, as in the following example:
-.Bd -literal -offset indent
-block in on $ext_if proto tcp all
-pass  in on $ext_if inet proto tcp from any to $ext_if \e
-    user proxy keep state
-.Ed
-.Pp
-These examples do not cover the connections from the proxy to the
-foreign FTP server.
-If one does not pass outgoing connections by default additional rules
-are needed.
-.Sh SEE ALSO
-.Xr ftp 1 ,
-.Xr pf 4 ,
-.Xr hosts.allow 5 ,
-.Xr hosts.deny 5 ,
-.Xr inetd.conf 5 ,
-.Xr pf.conf 5 ,
-.Xr inetd 8 ,
-.Xr pfctl 8 ,
-.Xr syslogd 8
-.Sh BUGS
-Extended Passive mode
-.Pq EPSV
-is not supported by the proxy and will not work unless the proxy is run
-in network address translation mode.
-When not in network address translation mode, the proxy returns an error
-to the client, hopefully forcing the client to revert to passive mode
-.Pq PASV
-which is supported.
-EPSV will work in network address translation mode, assuming a
-.Xr pf.conf 5
-setup which allows the EPSV connections through to their destinations.
-.Pp
-IPv6 is not yet supported.