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<H1>TOR</H1>
Section: User Commands (1) Updated: September 2005 <A HREF="#index">Index</A>
<A HREF="../">Return to Main Contents</A><HR>

tor - The second-generation onion router
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>

tor

[OPTION value]...
<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>

tor

is a connection-oriented anonymizing communication
service. Users choose a source-routed path through a set of nodes, and
negotiate a &quot;virtual circuit&quot; through the network, in which each node
knows its predecessor and successor, but no others. Traffic flowing down
the circuit is unwrapped by a symmetric key at each node, which reveals
the downstream node.

Basically tor provides a distributed network of servers (&quot;onion
routers&quot;). Users bounce their TCP streams -- web traffic, ftp, ssh, etc --
around the routers, and recipients, observers, and even the routers
themselves have difficulty tracking the source of the stream.
<A NAME="lbAE">&nbsp;</A>
<H2>OPTIONS</H2>

-h, -help
Display a short help message and exit.

<DL COMPACT>
<DT>-f FILE<DD>
FILE contains further &quot;option value&quot; pairs. (Default: @CONFDIR@/torrc)
</DL>

<DL COMPACT>
<DT>Other options can be specified either on the command-line (--option<DD>
value), or in the configuration file (option value).
Options are case-insensitive.
</DL>

<DL COMPACT>
<DT>BandwidthRate N bytes|KB|MB|GB|TB<DD>
A token bucket limits the average incoming bandwidth on this node to
the specified number of bytes per second. (Default: 2 MB)
</DL>

<DL COMPACT>
<DT>BandwidthBurst N bytes|KB|MB|GB|TB<DD>
Limit the maximum token bucket size (also known as the burst) to the given number of bytes. (Default: 5 MB)
</DL>

<DL COMPACT>
<DT>MaxAdvertisedBandwidth N bytes|KB|MB|GB|TB<DD>
If set, we will not advertise more than this amount of bandwidth for our
BandwidthRate. Server operators who want to reduce the number of clients
who ask to build circuits through them (since this is proportional to
advertised bandwidth rate) can thus reduce the CPU demands on their
server without impacting network performance.
</DL>

<DL COMPACT>
<DT>ControlPort Port<DD>
If set, Tor will accept connections from the same machine (localhost only) on
this port, and allow those connections to control the Tor process using the
Tor Control Protocol (described in control-spec.txt). Note: unless you also
specify one of HashedControlPassword or CookieAuthentication,
setting this option will cause Tor to allow any process on the local host to
control it.
</DL>

<DL COMPACT>
<DT>HashedControlPassword hashed_password<DD>
Don't allow any connections on the control port except when the other process
knows the password whose one-way hash is hashed_password. You can
compute the hash of a password by running &quot;tor --hash-password
password&quot;.
</DL>

<DL COMPACT>
<DT>CookieAuthentication 0|1<DD>
If this option is set to 1, don't allow any connections on the control port
except when the connecting process knows the contents of a file named
&quot;control_auth_cookie&quot;, which Tor will create in its data directory. This
authentication methods should only be used on systems with good filesystem
security. (Default: 0)
</DL>

<DL COMPACT>
<DT>DataDirectory DIR<DD>
Store working data in DIR (Default: @LOCALSTATEDIR@/lib/tor)
</DL>

<DL COMPACT>
<DT>DirFetchPeriod N seconds|minutes|hours|days|weeks<DD>
Every time the specified period elapses, Tor downloads a directory.
A directory contains a signed list of all known servers as well as
their current liveness status. A value of &quot;0 seconds&quot; tells Tor to choose an
appropriate default. (Default: 1 hour for clients, 20 minutes for servers)
</DL>

<DL COMPACT>
<DT>DirServer [v1] address:port fingerprint<DD>
Use a nonstandard authoritative directory server at the provided
address and port, with the specified key fingerprint. This option can
be repeated many times, for multiple authoritative directory
servers. If the &quot;v1&quot; option is provided, Tor will use this server as an
authority for old-style (v1) directories as well. (Only directory mirrors
care about this.) If no dirserver line is given, Tor will use the default
directory servers: moria1, moria2, and tor26. NOTE: this option is intended
for setting up a private Tor network with its own directory authorities. If
you use it, you will be distinguishable from other users, because you won't
believe the same authorities they do.
</DL>

<DL COMPACT>
<DT>Group GID<DD>
On startup, setgid to this user.
</DL>

<DL COMPACT>
<DT>HttpProxy host[:port]<DD>
Tor will make all its directory requests through this host:port
(or host:80 if port is not specified),
rather than connecting directly to any directory servers.
</DL>

<DL COMPACT>
<DT>HttpProxyAuthenticator username:password<DD>
If defined, Tor will use this username:password for Basic Http proxy
authentication, as in RFC 2617. This is currently the only form of
Http proxy authentication that Tor supports; feel free to submit a
patch if you want it to support others.
</DL>

<DL COMPACT>
<DT>HttpsProxy host[:port]<DD>
Tor will make all its OR (SSL) connections through this host:port
(or host:443 if port is not specified), via HTTP CONNECT rather than
connecting directly to servers. You may want to set FascistFirewall
to restrict the set of ports you might try to connect to, if your Https
proxy only allows connecting to certain ports.
</DL>

<DL COMPACT>
<DT>HttpsProxyAuthenticator username:password<DD>
If defined, Tor will use this username:password for Basic Https proxy
authentication, as in RFC 2617. This is currently the only form of
Https proxy authentication that Tor supports; feel free to submit a
patch if you want it to support others.
</DL>

<DL COMPACT>
<DT>KeepalivePeriod NUM<DD>
To keep firewalls from expiring connections, send a padding keepalive
cell every NUM seconds on open connections that are in use. If the
connection has no open circuits, it will instead be closed after NUM
seconds of idleness. (Default: 5 minutes)
</DL>

<DL COMPACT>
<DT>Log minSeverity[-maxSeverity] stderr|stdout|syslog<DD>
Send all messages between minSeverity and maxSeverity to
the standard output stream, the standard error stream, or to the system
log. (The &quot;syslog&quot; value is only supported on Unix.) Recognized
severity levels are debug, info, notice, warn, and err. If only one
severity level is given, all messages of that level or higher will be
sent to the listed destination.
</DL>

<DL COMPACT>
<DT>Log minSeverity[-maxSeverity] file FILENAME<DD>
As above, but send log messages to the listed filename. The &quot;Log&quot;
option may appear more than once in a configuration file. Messages
are sent to all the logs that match their severity level.
</DL>

<DL COMPACT>
<DT>MaxConn NUM<DD>
Maximum number of simultaneous sockets allowed. You probably don't need
to adjust this. (Default: 1024)
</DL>

<DL COMPACT>
<DT>OutboundBindAddress IP<DD>
Make all outbound connections originate from the IP address specified. This
is only useful when you have multiple network interfaces, and you want all
of Tor's outgoing connections to use a single one.
</DL>

<DL COMPACT>
<DT>PidFile FILE<DD>
On startup, write our PID to FILE. On clean shutdown, remove FILE.
</DL>

<DL COMPACT>
<DT>RunAsDaemon 0|1<DD>
If 1, Tor forks and daemonizes to the background. (Default: 0)
</DL>

<DL COMPACT>
<DT>SafeLogging 0|1<DD>
If 1, Tor replaces potentially sensitive strings in the logs
(e.g. addresses) with the string [scrubbed]. This way logs can still be
useful, but they don't leave behind personally identifying information
about what sites a user might have visited. (Default: 1)
</DL>

<DL COMPACT>
<DT>StatusFetchPeriod N seconds|minutes|hours|days|weeks<DD>
Every time the specified period elapses, Tor downloads signed status
information about the current state of known servers. A value of
&quot;0 seconds&quot; tells Tor to choose an appropriate default. (Default: 30
minutes for clients, 15 minutes for servers)
</DL>

<DL COMPACT>
<DT>User UID<DD>
On startup, setuid to this user.
</DL>

<DL COMPACT>
<DT>HardwareAccel 0|1<DD>
If non-zero, try to use crypto hardware acceleration when
available. (Default: 1. )

</DL>
<A NAME="lbAF">&nbsp;</A>
<H2>CLIENT OPTIONS</H2>

The following options are useful only for clients (that is, if SOCKSPort is non-zero):

<DL COMPACT>
<DT>ClientOnly 0|1<DD>
If set to 1, Tor will under no circumstances run as a server. The default
is to run as a client unless ORPort is configured. (Usually,
you don't need to set this; Tor is pretty smart at figuring out whether
you are reliable and high-bandwidth enough to be a useful server.)

This option will likely be deprecated in the future; see the NoPublish
option below. (Default: 0)
</DL>

<DL COMPACT>
<DT>EntryNodes nickname,nickname,...<DD>
A list of preferred nodes to use for the first hop in the circuit, if possible.
</DL>

<DL COMPACT>
<DT>ExitNodes nickname,nickname,...<DD>
A list of preferred nodes to use for the last hop in the circuit, if possible.
</DL>

<DL COMPACT>
<DT>ExcludeNodes nickname,nickname,...<DD>
A list of nodes to never use when building a circuit.
</DL>

<DL COMPACT>
<DT>StrictExitNodes 0|1<DD>
If 1, Tor will never use any nodes besides those listed in &quot;exitnodes&quot; for
the last hop of a circuit.
</DL>

<DL COMPACT>
<DT>StrictEntryNodes 0|1<DD>
If 1, Tor will never use any nodes besides those listed in &quot;entrynodes&quot; for
the first hop of a circuit.
</DL>

<DL COMPACT>
<DT>FascistFirewall 0|1<DD>
If 1, Tor will only create outgoing connections to ORs running on ports that
your firewall allows (defaults to 80 and 443; see FirewallPorts). This will
allow you to run Tor as a client behind a firewall with restrictive policies,
but will not allow you to run as a server behind such a firewall.
This option is deprecated; use
ReachableAddresses instead.
</DL>

<DL COMPACT>
<DT>FirewallPorts PORTS<DD>
A list of ports that your firewall allows you to connect to. Only
used when FascistFirewall is set. This option is deprecated; use
ReachableAddresses instead. (Default: 80, 443)
</DL>

<DL COMPACT>
<DT>ReachableAddresses ADDR[/MASK][:PORT]...<DD>
A comma-separated list of IPs that your firewall allows you to connect
to. Only used when FascistFirewall is set. The format is as
for the addresses in ExitPolicy, except that &quot;accept&quot; is understood
unless &quot;reject&quot; is explicitly provided. For example, 'ReachableAddresses
99.0.0.0/8, reject 18.0.0.0/8:80, accept *:80' means that your
firewall allows connections to everything inside net 99, rejects port
80 connections to net 18, and accepts connections to port 80 otherwise.
(Default: 'accept *:*'.)
</DL>

<DL COMPACT>
<DT>LongLivedPorts PORTS<DD>
A list of ports for services that tend to have long-running connections
(e.g. chat and interactive shells). Circuits for streams that use these
ports will contain only high-uptime nodes, to reduce the chance that a
node will go down before the stream is finished. (Default: 21, 22, 706, 1863, 5050, 
5190, 5222, 5223, 6667, 8300, 8888)
</DL>

<DL COMPACT>
<DT>MapAddress address newaddress<DD>
When a request for address arrives to Tor, it will rewrite it to newaddress before 
processing it. For example, if you always want connections to <A HREF="http://www.indymedia.org">www.indymedia.org</A> to 
exit via torserver (where torserver is the nickname of the server), 
use &quot;MapAddress <A HREF="http://www.indymedia.org">www.indymedia.org</A> <A HREF="http://www.indymedia.org.torserver.exit">www.indymedia.org.torserver.exit</A>&quot;.
</DL>

<DL COMPACT>
<DT>NewCircuitPeriod NUM<DD>
Every NUM seconds consider whether to build a new circuit. (Default: 30 seconds)
</DL>

<DL COMPACT>
<DT>MaxCircuitDirtiness NUM<DD>
Feel free to reuse a circuit that was first used at most NUM seconds
ago, but never attach a new stream to a circuit that is too old. (Default: 10 minutes)
</DL>

<DL COMPACT>
<DT>NodeFamily nickname,nickname,...<DD>
The named Tor servers constitute a &quot;family&quot; of similar or co-administered
servers, so never use any two of them in the same circuit. Defining a
NodeFamily is only needed when a server doesn't list the family itself
(with MyFamily). This option can be used multiple times.
</DL>

RendNodes nickname,nickname,...
A list of preferred nodes to use for the rendezvous point, if possible.
</DL>

<DL COMPACT>
<DT>RendExcludeNodes nickname,nickname,...<DD>
A list of nodes to never use when choosing a rendezvous point.
</DL>

<DL COMPACT>
<DT>SOCKSPort PORT<DD>
Advertise this port to listen for connections from SOCKS-speaking
applications. Set this to 0 if you don't want to allow application
connections. (Default: 9050)
</DL>

<DL COMPACT>
<DT>SOCKSBindAddress IP[:PORT]<DD>
Bind to this address to listen for connections from SOCKS-speaking
applications. (Default: 127.0.0.1) You can also specify a port
(e.g. 192.168.0.1:9100). This directive can be specified multiple times
to bind to multiple addresses/ports.
</DL>

<DL COMPACT>
<DT>SOCKSPolicy policy,policy,...<DD>
Set an entrance policy for this server, to limit who can connect to the SOCKS ports. 
The policies have the same form as exit policies below.
</DL>

<DL COMPACT>
<DT>TrackHostExits host,.domain,...<DD>
For each value in the comma separated list, Tor will track recent connections
to hosts that match this value and attempt to
reuse the same exit node for each. If the value is prepended with a '.', it is
treated as matching an entire domain. If one of the values is just a '.', it
means match everything. This option is useful if you frequently connect to
sites that will expire all your authentication cookies (ie log you out) if
your IP address changes. Note that this option does have the disadvantage of
making it more clear that a given history is
associated with a single user. However, most people who would wish to observe
this will observe it through cookies or other protocol-specific means anyhow.
</DL>

<DL COMPACT>
<DT>TrackHostExitsExpire NUM<DD>
Since exit servers go up and down, it is desirable to expire the association
between host and exit server after NUM seconds. The default
is 1800 seconds (30 minutes).
</DL>

<DL COMPACT>
<DT>UseHelperNodes 0|1<DD>
If this option is set to 1, we pick a few entry servers as our &quot;helpers&quot;, and
try to use only those fixed entry servers. This is desirable, because
constantly changing servers increases the odds that an adversary who owns
some servers will observe a fraction of your paths.
(Defaults to 0; will eventually default to 1.)
</DL>

<DL COMPACT>
<DT>NumHelperNodes NUM<DD>
If UseHelperNodes is set to 1, we will try to pick a total of NUM helper
nodes as entries for our circuits.
(Defaults to 3.)

</DL>
<A NAME="lbAG">&nbsp;</A>
<H2>SERVER OPTIONS</H2>

The following options are useful only for servers (that is, if ORPort is non-zero):

<DL COMPACT>
<DT>Address address<DD>
The IP or fqdn of this server (e.g. moria.mit.edu). You can leave this
unset, and Tor will guess your IP.
</DL>

<DL COMPACT>
<DT>AssumeReachable 0|1<DD>
This option is used when bootstrapping a new Tor network. If set to 1,
don't do self-reachability testing; just upload your server descriptor
immediately. If AuthoritativeDirectory is also set, this option
instructs the dirserver to bypass remote reachability testing too and
list all connected servers as running.
</DL>

<DL COMPACT>
<DT>ContactInfo email_address<DD>
Administrative contact information for server.
</DL>

<DL COMPACT>
<DT>ExitPolicy policy,policy,...<DD>
Set an exit policy for this server. Each policy is of the form
&quot;accept|reject ADDR[/MASK][:PORT]&quot;.
If /MASK is omitted then this policy just applies to the host
given. Instead of giving a host or network you can also use &quot;*&quot; to
denote the universe (0.0.0.0/0). PORT can be a single port number,
an interval of ports &quot;FROM_PORT-TO_PORT&quot;, or &quot;*&quot;.
If PORT is omitted, that means &quot;*&quot;.

For example, &quot;reject 127.0.0.1:*,reject 192.168.1.0/24:*,accept *:*&quot; would
reject any traffic destined for localhost and any 192.168.1.* address, but
accept anything else.

This directive can be specified multiple times so you don't have to put
it all on one line.

See RFC 3330 for more details about internal and reserved IP address
space. Policies are considered first to last, and the first match wins. If
you want to _replace_ the default exit policy, end your exit policy with
either a reject *:* or an accept *:*. Otherwise, you're _augmenting_
(prepending to) the default exit policy. The default exit policy is:

<DL COMPACT><DT><DD>
<DL COMPACT>
<DT>reject 0.0.0.0/8<DD>
<DT>reject 169.254.0.0/16<DD>
<DT>reject 127.0.0.0/8<DD>
<DT>reject 192.168.0.0/16<DD>
<DT>reject 10.0.0.0/8<DD>
<DT>reject 172.16.0.0/12<DD>
<DT>reject *:25<DD>
<DT>reject *:119<DD>
<DT>reject *:135-139<DD>
<DT>reject *:445<DD>
<DT>reject *:465<DD>
<DT>reject *:587<DD>
<DT>reject *:1214<DD>
<DT>reject *:4661-4666<DD>
<DT>reject *:6346-6429<DD>
<DT>reject *:6699<DD>
<DT>reject *:6881-6999<DD>
<DT>accept *:*<DD>
</DL>
</DL>

</DL>

<DL COMPACT>
<DT>MaxOnionsPending NUM<DD>
If you have more than this number of onionskins queued for decrypt, reject new ones. (Default: 100)
</DL>

<DL COMPACT>
<DT>MyFamily nickname,nickname,...<DD>
Declare that this Tor server is controlled or administered by a group
or organization identical or similar to that of the other named servers.
When two servers both declare that they are in the same 'family', Tor clients
will not use them in the same circuit. (Each server only needs to list the
other servers in its family; it doesn't need to list itself, but it won't hurt.)
</DL>

<DL COMPACT>
<DT>Nickname name<DD>
Set the server's nickname to 'name'.
</DL>

<DL COMPACT>
<DT>NoPublish 0|1<DD>
If you set NoPublish 1, Tor will act as a server if you have an ORPort
defined, but it will not publish its descriptor to the dirservers. This
option is useful if you're testing out your server, or if you're using
alternate dirservers (e.g. for other Tor networks such as Blossom).
(Default: 0)
</DL>

<DL COMPACT>
<DT>NumCPUs num<DD>
How many processes to use at once for decrypting onionskins. (Default: 1)
</DL>

<DL COMPACT>
<DT>ORPort PORT<DD>
Advertise this port to listen for connections from Tor clients and servers.
</DL>

<DL COMPACT>
<DT>ORBindAddress IP[:PORT]<DD>
Bind to this IP address to listen for connections from Tor clients and
servers. If you specify a port, bind to this port rather than the one
specified in ORPort. (Default: 0.0.0.0)
</DL>

<DL COMPACT>
<DT>RedirectExit pattern target<DD>
Whenever an outgoing connection tries to connect to one of a given set
of addresses, connect to target (an address:port pair) instead.
The address
pattern is given in the same format as for an exit policy. The
address translation applies after exit policies are applied. Multiple
RedirectExit options can be used: once any one has matched
successfully, no subsequent rules are considered. You can specify that no
redirection is to be performed on a given set of addresses by using the
special target string &quot;pass&quot;, which prevents subsequent rules from being
considered.
</DL>

<DL COMPACT>
<DT>ShutdownWaitLength NUM<DD>
When we get a SIGINT and we're a server, we begin shutting down: we close
listeners and start refusing new circuits. After NUM seconds,
we exit. If we get a second SIGINT, we exit immediately. (Default:
30 seconds)
</DL>

<DL COMPACT>
<DT>DirPostPeriod N seconds|minutes|hours|days|weeks<DD>
Every time the specified period elapses, Tor uploads its server
descriptors to the directory servers. This information is also
uploaded whenever it changes. (Default: 20 minutes)
</DL>

<DL COMPACT>
<DT>AccountingMax N bytes|KB|MB|GB|TB<DD>
Never send more than the specified number of bytes in a given
accounting period, or receive more than that number in the period.
For example, with AccountingMax set to 1 GB, a server could send 900 MB
and receive 800 MB and continue running. It will only hibernate once one
of the two reaches 1 GB.
When the number of bytes is exhausted, Tor will hibernate until some
time in the next accounting period. To prevent all servers from
waking at the same time, Tor will also wait until a random point in
each period before waking up. If you have bandwidth cost issues,
enabling hibernation is preferable to setting a low bandwidth, since it
provides users with a collection of fast servers that are up some of
the time, which is more useful than a set of slow servers that are
always &quot;available&quot;.
</DL>

<DL COMPACT>
<DT>AccountingStart day|week|month [day] HH:MM<DD>
Specify how long accounting periods last. If month is given,
each accounting period runs from the time HH:MM on the
dayth day of one month to the same day and time of the next.
(The day must be between 1 and 28.) If week is given, each
accounting period runs from the time HH:MM of the dayth
day of one week to the same day and time of the next week, with Monday
as day 1 and Sunday as day 7. If day is given, each accounting
period runs from the time HH:MM each day to the same time on the
next day. All times are local, and given in 24-hour time. (Defaults to
&quot;month 1 0:00&quot;.)

</DL>
<A NAME="lbAH">&nbsp;</A>
<H2>DIRECTORY SERVER OPTIONS</H2>

The following options are useful only for directory servers (that is, if DirPort is non-zero):

<DL COMPACT>
<DT>AuthoritativeDirectory 0|1<DD>
When this option is set to 1, Tor operates as an authoritative
directory server. Instead of caching the directory, it generates its
own list of good servers, signs it, and sends that to the clients.
Unless the clients already have you listed as a trusted directory, you
probably do not want to set this option. Please coordinate with the other
admins at <A HREF="mailto:tor-ops@freehaven.net">tor-ops@freehaven.net</A> if you think you should be a directory.
</DL>

<DL COMPACT>
<DT>DirPort PORT<DD>
Advertise the directory service on this port.
</DL>

<DL COMPACT>
<DT>DirBindAddress IP[:PORT]<DD>
Bind the directory service to this address. If you specify a port, bind
to this port rather than the one specified in DirPort. (Default: 0.0.0.0)
</DL>

<DL COMPACT>
<DT>DirPolicy policy,policy,...<DD>
Set an entrance policy for this server, to limit who can connect to the directory ports. 
The policies have the same form as exit policies above.
</DL>

<DL COMPACT>
<DT>RecommendedVersions STRING<DD>
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. This
option can appear multiple times: the values from multiple lines are
spliced together.
</DL>

<DL COMPACT>
<DT>DirAllowPrivateAddresses 0|1<DD>
If set to 1, Tor will accept router descriptors with arbitrary &quot;Address&quot;
elements. Otherwise, if the address is not an IP or is a private IP,
it will reject the router descriptor. Defaults to 0.
</DL>

<DL COMPACT>
<DT>RunTesting 0|1<DD>
If set to 1, Tor tries to build circuits through all of the servers it
knows about, so it can tell which are up and which are down. This
option is only useful for authoritative directories, so you probably
don't want to use it.

</DL>
<A NAME="lbAI">&nbsp;</A>
<H2>HIDDEN SERVICE OPTIONS</H2>

The following options are used to configure a hidden service.

<DL COMPACT>
<DT>HiddenServiceDir DIRECTORY<DD>
Store data files for a hidden service in DIRECTORY. Every hidden
service must have a separate directory. You may use this option multiple
times to specify multiple services.
</DL>

<DL COMPACT>
<DT>HiddenServicePort VIRTPORT [TARGET]<DD>
Configure a virtual port VIRTPORT for a hidden service. You may use this
option multiple times; each time applies to the service using the most recent
hiddenservicedir. By default, this option maps the virtual port to the
same port on 127.0.0.1. You may override the target port, address, or both
by specifying a target of addr, port, or addr:port.
</DL>

<DL COMPACT>
<DT>HiddenServiceNodes nickname,nickname,...<DD>
If possible, use the specified nodes as introduction points for the hidden
service. If this is left unset, Tor will be smart and pick some reasonable
ones; most people can leave this unset.
</DL>

<DL COMPACT>
<DT>HiddenServiceExcludeNodes nickname,nickname,...<DD>
Do not use the specified nodes as introduction points for the hidden
service. In normal use there is no reason to set this.
</DL>

<DL COMPACT>
<DT>RendPostPeriod N seconds|minutes|hours|days|weeks<DD>
Every time the specified period elapses, Tor uploads any rendezvous
service descriptors to the directory servers. This information is also
uploaded whenever it changes. (Default: 20 minutes)

</DL>
<A NAME="lbAJ">&nbsp;</A>
<H2>SIGNALS</H2>

Tor catches the following signals:

<DL COMPACT>
<DT>SIGTERM<DD>
Tor will catch this, clean up and sync to disk if necessary, and exit.
</DL>

<DL COMPACT>
<DT>SIGINT<DD>
Tor clients behave as with SIGTERM; but Tor servers will do a controlled
slow shutdown, closing listeners and waiting 30 seconds before exiting.
(The delay can be configured with the ShutdownWaitLength config option.)
</DL>

<DL COMPACT>
<DT>SIGHUP<DD>
The signal instructs Tor to reload its configuration (including closing
and reopening logs), fetch a new directory, and kill and restart its
helper processes if applicable.
</DL>

<DL COMPACT>
<DT>SIGUSR1<DD>
Log statistics about current connections, past connections, and
throughput.
</DL>

<DL COMPACT>
<DT>SIGUSR2<DD>
Switch all logs to loglevel debug. You can go back to the old loglevels
by sending a SIGHUP.
</DL>

<DL COMPACT>
<DT>SIGCHLD<DD>
Tor receives this signal when one of its helper processes has exited,
so it can clean up.
</DL>

<DL COMPACT>
<DT>SIGPIPE<DD>
Tor catches this signal and ignores it.
</DL>

<DL COMPACT>
<DT>SIGXFSZ<DD>
If this signal exists on your platform, Tor catches and ignores it.

</DL>
<A NAME="lbAK">&nbsp;</A>
<H2>FILES</H2>

<DL COMPACT>
<DT>@CONFDIR@/torrc

<DD>
The configuration file, which contains &quot;option value&quot; pairs.
</DL>

<DL COMPACT>
<DT>@LOCALSTATEDIR@/lib/tor/

<DD>
The tor process stores keys and other data here.

</DL>
<A NAME="lbAL">&nbsp;</A>
<H2>SEE ALSO</H2>

<A HREF="../?1+privoxy">privoxy</A>(1),

<A HREF="../?1+tsocks">tsocks</A>(1),

<A HREF="../?1+torify">torify</A>(1)

Plenty, probably. Tor is still in development. Please report them.
<A NAME="lbAN">&nbsp;</A>
<H2>AUTHORS</H2>

Roger Dingledine &lt;<A HREF="mailto:arma@mit.edu">arma@mit.edu</A>&gt;, Nick Mathewson &lt;<A HREF="mailto:nickm@alum.mit.edu">nickm@alum.mit.edu</A>&gt;.

<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT><A HREF="#lbAB">NAME</A><DD>
<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT><A HREF="#lbAE">OPTIONS</A><DD>
<DT><A HREF="#lbAF">CLIENT OPTIONS</A><DD>
<DT><A HREF="#lbAG">SERVER OPTIONS</A><DD>
<DT><A HREF="#lbAH">DIRECTORY SERVER OPTIONS</A><DD>
<DT><A HREF="#lbAI">HIDDEN SERVICE OPTIONS</A><DD>
<DT><A HREF="#lbAJ">SIGNALS</A><DD>
<DT><A HREF="#lbAK">FILES</A><DD>
<DT><A HREF="#lbAL">SEE ALSO</A><DD>
<DT><A HREF="#lbAM">BUGS</A><DD>
<DT><A HREF="#lbAN">AUTHORS</A><DD>
</DL>
<HR>
This document was created by
<A HREF="../">man2html</A>,
using the manual pages. 
Time: 23:34:21 GMT, September 24, 2005
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