Provided by: spiped_1.6.2-3_amd64 
NAME
spiped - secure pipe daemon
SYNOPSIS
spiped {-e | -d} -s <source socket> -t <target socket> -k <key file>
[-DFj] [-f | -g] [-n <max # connections>] [-o <connection timeout>]
[-p <pidfile>] [-r <rtime> | -R] [--syslog]
[-u <username> | <:groupname> | <username:groupname>]
spiped -v
OPTIONS
-e Take unencrypted connections from the source socket and send encrypted connections
to the target socket.
-d Take encrypted connections from the source socket and send unencrypted connections
to the target socket.
-s <source socket>
Address on which spiped should listen for incoming connections. The accepted
formats are the same as the ones accepted by target socket. Note that contrary to
target socket hostnames are resolved when spiped is launched and are not re-
resolved later; thus if DNS entries change spiped will continue to accept
connections at the expired address.
-t <target socket>
Address to which spiped should connect. Must be in one of the following formats:
• /absolute/path/to/unix/socket
• host.name:port
• [ip.v4.ad.dr]:port
• [ipv6::addr]:port
Hostnames are re-resolved every rtime seconds.
-k <key file>
Use the provided key file to authenticate and encrypt. Pass "-" to read from
standard input.
-D Wait for DNS. Normally when spiped is launched it resolves addresses and binds to
its source socket before the parent process returns; with this option it will
daemonize first and retry failed DNS lookups until they succeed. This allows
spiped to launch even if DNS isn't set up yet, but at the expense of losing the
guarantee that once spiped has finished launching it will be ready to create pipes.
-f Use fast/weak handshaking: This reduces the CPU time spent in the initial
connection setup by disabling the Diffie-Hellman handshake, at the expense of
losing perfect forward secrecy.
-g Require perfect forward secrecy by dropping connections if the other host is using
the -f option.
-F Run in foreground. This can be useful with systems like daemontools.
-j Disable transport layer keep-alives. (By default they are enabled.)
-n <max # connections>
Limit on the number of simultaneous connections allowed. A value of 0 indicates
that no limit should be imposed; this may be inadvisable in some circumstances,
since spiped will terminate if it fails to allocate memory for handling a new
connection. Defaults to 100 connections.
-o <connection timeout>
Timeout, in seconds, after which an attempt to connect to the target or a protocol
handshake will be aborted (and the connection dropped) if not completed. Defaults
to 5s.
-p <pidfile>
File to which spiped's process ID should be written. Defaults to source socket.pid
(in the current directory if source socket is not an absolute path). No file will
be written if -F (run in foreground) is used.
-r <rtime>
Re-resolve the address of target socket every rtime seconds. Defaults to re-
resolution every 60 seconds.
-R Disable target address re-resolution.
--syslog
After daemonizing, send warnings to syslog instead of stderr. Has no effect if -F
(run in foreground) is used.
-u <username> | <:groupname> | <username:groupname>
After binding a socket, change the user to username and/or the group to groupname.
-v Print version number.
SIGNALS
spiped provides special treatment of the following signals:
SIGTERM
On receipt of the SIGTERM signal spiped will stop accepting new connections and
exit once there are no active connections left.
SEE ALSO
spipe(1).