Portfwd(8)

NAME
Portfwd - Port forwarding daemon

SYNOPSIS
portfwd -h
portfwd -v
portfwd [-d ...] [-t] [ -c config-file ]

DESCRIPTION
This manual page documents briefly the Portfwd program.

Portfwd stands for port forwarding daemon. It's a small userland tool which forwards incoming TCP connections and/or UDP datagrams to remote hosts. There is support for FTP forwarding, transparent proxy and a few other minor features.

This author's English skills are very bad as he's not a native speaker of that language -- please feel free to contribute fixes for this page if you can.

OPTIONS
The program follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below.

-h, --help
    Shows summary of options.

-v, --version
    Shows program version.

-d, --debug
    This option increases logging verbosity for debug. Up to 3 switches are meaningful. Failure messages are sent to the system log under daemon facility.

-t, --transparent-proxy
    This switch enables transparent proxying. If you intend to forward data to hosts behind your masquerading firewall, you probably want this option turned on; it allows your servers to see true IP addresses of clients.

-f, --on-the-fly-dns
    Portfwd usually solves all DNS hostnames upon startup. Specify the -f option if you want the destination hostnames be updated on demand. Be aware this can affect TCP connection times and the whole UDP forwarding performance.

-c, --config config-file
    This argument allows specification of a configuration file other than the hard-coded default. config-file is the full pathname to the configuration file.

FILES

/etc/portfwd.cfg
    Default configuration file.

SIGNALS

SIGTERM
    If sent to Portfwd master process (the one with lowest PID), the TERM signal terminates the whole forwarding job.

SEE ALSO

http://sourceforge.net/projects/portfwd/
    Portfwd web site at SourceForge.

AUTHOR
Manual page loosely written by
Éverton da Silva Marques <evertonm@my-deja.com>