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140 lines
4.8 KiB
Groff
140 lines
4.8 KiB
Groff
.TH TOR 1 "November 2003" "TOR"
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.SH NAME
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tor \- The second-generation onion router
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.SH SYNOPSIS
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.B tor
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[\fIOPTION value\fR]...
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.SH DESCRIPTION
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.I tor
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is a connection-oriented anonymizing communication
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service. Users choose a source-routed path through a set of nodes, and
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negotiate a "virtual circuit" through the network, in which each node
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knows its predecessor and successor, but no others. Traffic flowing down
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the circuit is unwrapped by a symmetric key at each node, which reveals
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the downstream node.
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.PP
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Basically \fItor\fR provides a distributed network of servers ("onion
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routers"). Users bounce their tcp streams -- web traffic, ftp, ssh, etc --
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around the routers, and recipients, observers, and even the routers
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themselves have difficulty tracking the source of the stream.
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.SH OPTIONS
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\fB-h, -help\fP
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Display a short help message and exit.
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.TP
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\fB-f \fR\fIFILE\fP
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FILE contains further "option value" pairs. (Default: @CONFDIR@/torrc)
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.TP
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Other options can be specified either on the commandline (\fI--option value\fR), or in the configuration file (\fIoption value\fR).
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.TP
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\fBloglevel debug|info|warn|err\fP
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Set the verboseness level of the primary log. (Default: warn)
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.TP
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\fBlogfile \fR\fIFILE\fP
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Rather than logging to stdout, log to FILE.
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.TP
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\fBdebuglogfile \fR\fIFILE\fP
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In addition to other logging, we will log to FILE at log-level debug.
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.TP
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\fBgroup \fR\fIGID\fP
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On startup, setgid to this user.
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.TP
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\fBkeepaliveperiod \fR\fINUM\fP
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To keep firewalls from expiring connections, send a padding keepalive cell on open connections every NUM seconds. (Default: 300)
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.TP
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\fBpidfile \fR\fIFILE\fP
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On startup, write our PID to FILE. On clean shutdown, remove FILE.
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.TP
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\fBrouterfile \fR\fIFILE\fP
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FILE contains a list of directory servers, to bootstrap into the network. (Default: @CONFDIR@/dirservers)
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.TP
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\fBrunasdaemon \fR\fI0|1\fP
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If 1, Tor forks and daemonizes to the background. (Default: 0)
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.TP
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\fBtotalbandwidth \fR\fINUM\fP
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A token bucket limits the average incoming bandwidth on this node to NUM bytes per second. (Default: 800000)
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.TP
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\fBuser \fR\fIUID\fP
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On startup, setuid to this user.
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.SH CLIENT OPTIONS
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.PP
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The following options are useful only for clients (that is, if \fBsocksport\fP is non-zero):
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.TP
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\fBnewcircuitperiod \fR\fINUM\fP
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Every NUM seconds consider whether to build a new circuit. (Default: 60)
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.TP
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\fBpathlencoinweight \fR\fI0.0-1.0\fP
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Paths are 3 hops plus a geometric distribution centered around this coinweight. Must be >=0.0 and <1.0. (Default: 0.3)
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.TP
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\fBsocksport \fR\fIPORT\fP
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Bind to this port to listen for connections from socks-speaking applications.
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.TP
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\fBsocksbindaddress \fR\fIIP\fP
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Bind to this address to listen for connections from socks-speaking applications. (Default: 127.0.0.1)
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.SH SERVER OPTIONS
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.PP
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The following options are useful only for servers (that is, if \fBorport\fP is non-zero):
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.TP
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\fBaddress address\fP
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The fqdn of this server (e.g. moria.mit.edu).
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.TP
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\fBdatadirectory \fR\fIDIR\fP
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Store working data in DIR (Default: @LOCALSTATEDIR@/lib/tor)
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.TP
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\fBexitpolicy \fR\fIpolicy,policy,...\fP
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Set an exit policy for this server. Each policy is of the form "reject ADDR/MASK:PORT". For example,
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"reject 127.0.0.1:*,reject 192.168.1.0/24:*,accept *:*" would reject any traffic destined for
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localhost and any 192.168.1.* address, but accept anything else.
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.TP
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\fBmaxonionspending \fR\fINUM\fP
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If you have more than this number of onionskins queued for decrypt, reject new ones. (Default: 100)
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.TP
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\fBnickname \fR\fIname\fP
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Set the server's nickname to 'name'.
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.TP
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\fBnumcpus \fR\fInum\fP
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How many processes to use at once for decrypting onionskins. (Default: 1)
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.TP
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\fBorport \fR\fIPORT\fP
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Bind to this port to listen for connections from Tor clients and servers.
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.TP
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\fBorbindaddress \fR\fIIP\fP
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Bind to this address to listen for connections from Tor clients and servers. (Default: 0.0.0.0)
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.SH DIRECTORY SERVER OPTIONS
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.PP
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The following options are useful only for directory servers (that is, if \fBdirport\fP is non-zero):
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.TP
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\fBdirport \fR\fIPORT\fP
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Bind the directory service to this port.
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.TP
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\fBdirbindaddress \fR\fIIP\fP
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Bind the directory service to this address. (Default: 0.0.0.0)
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.TP
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\fBrecommendedversions \fR\fISTRING\fP
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STRING is a command-separated list of Tor versions currently believed to be safe. The list is included in each directory, and nodes which pull down the directory learn whether they need to upgrade.
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.SH FILES
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.TP
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.I @CONFDIR@/torrc
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The configuration file, which contains "option value" pairs.
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.TP
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.I @CONFDIR@/dirservers
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A list of directory servers, to bootstrap into the network.
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.TP
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.I @LOCALSTATEDIR@/lib/tor/
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The tor server stores keys/etc here.
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.SH SEE ALSO
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.BR privoxy (1),
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.BR tsocks (1)
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.BR http://freehaven.net/tor/
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.SH BUGS
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Plenty, probably. It's still in alpha. Please report them.
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.SH AUTHORS
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Roger Dingledine <arma@mit.edu>.
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