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Test Your Knowledge in Computers #879
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Supervisory Control and Data Authorization (SCADA) is a control system architecture .
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gnunet-vpn(1) [debian man page]

GNUNET-VPN(1)						      General Commands Manual						     GNUNET-VPN(1)

NAME
gnunet-vpn - manually setup a GNUnet VPN tunnel SYNOPSIS
gnunet-vpn [options] DESCRIPTION
gnunet-vpn can be used to manually setup a VPN tunnel via the GNUnet network. There are two main types of tunnels. Tunnels to an exit node which routes the traffic to the global Internet, and tunnels to a node that runs a service only within GNUnet. Depending on the type of tunnel, gnunet-vpn takes different options. The "-i" option is required for tunnels to an exit node, whereas the "-p" and "-s" options in conjunction with either "-u" or "-t" are required for tunnels to services. For exit tunnels, both UDP and TCP traffic will be redi- rected. For service tunnels, either UDP ("-u") or TCP ("-t") traffic will be redirected. The tool will display the IP address for this end of the tunnel. The address can be displayed as soon as it has been allocated, or only after ("-a") the tunnel has been created. OPTIONS
-4, --ipv4 Desired IP address on this end of the tunnel should be an IPv4 address. -6, --ipv6 Desired IP address on this end of the tunnel should be an IPv6 address. -a, --after-connect Display IP address only after the tunnel is fully connected. -c FILENAME, --config=FILENAME Use the configuration file FILENAME. -d SEC, --duration SEC The mapping should be established for SEC seconds. Default is 5 minutes. -h, --help Print short help on options. -i IP, --ip IP Tunnel should be to an exit node and connect to the given IPv4 or IPv6 IP address. Note that you can specify an IPv6 address as the target here, even in combination with "-4" (4to6) and similarly you can specify an IPv4 address in combination with "-6" (6to4). -L LOGLEVEL, --loglevel=LOGLEVEL Use LOGLEVEL for logging. Valid values are DEBUG, INFO, WARNING and ERROR. -p PEERID, --peer=PEERID Name of the peer offering the service to connect to. Cannot be used in conjunction with "-i", requires "-s". -s NAME, --service=NAME Name of the service running on the target peer. Cannot be used in conjunction with "-i", requires "-p". -t, --tcp Service runs TCP. Either "-t" or "-u" must be specified when using "-s". -u, --udp Service runs UDP. Either "-t" or "-u" must be specified when using "-s". -V, --verbose Be verbose. -v, --version Print GNUnet version number. BUGS
Report bugs by using Mantis <https://gnunet.org/bugs/> or by sending electronic mail to <gnunet-developers@gnu.org> SEE ALSO
gnunet-setup(1) GNUnet 25 Feb 2012 GNUNET-VPN(1)

Check Out this Related Man Page

gnunet-directory(1)					      General Commands Manual					       gnunet-directory(1)

NAME
gnunet-directory - display directories SYNOPSIS
gnunet-directory [OPTIONS] (FILENAME)* DESCRIPTION
gnunet-directory lists the contents of one or more GNUnet directories. A GNUnet directory is a binary file that contains a list of GNUnet file-sharing URIs and meta data. The names of the directory files must be passed as command-line arguments to gnunet-directory. -c FILENAME, --config=FILENAME configuration file to use (useless option since gnunet-directory does not really depend on any configuration options) -h, --help print help page -L LOGLEVEL, --loglevel=LOGLEVEL Change the loglevel. Possible values for LOGLEVEL are ERROR, WARNING, INFO and DEBUG. -v, --version print the version number NOTES
A GNUnet directory is a file containing a list of GNUnet URIs and meta data. The keys can point to files, other directories or files in namespaces. In other words, a GNUnet directory is similar to UNIX directories. The difference to tar and zip is that GNUnet directory does not contain the actual files (except if they are really small, in which case they may be inlined), just symbolic (links), similar to directories with symbolic links in UNIX filesystems. The benefit is that the individual files can be retrieved separately (if desired) and if some of the files are inserted to another node in GNUnet, this just increases their availability but does not produce useless duplicates (for example, it is a better idea to publish a collection of pictures or compressed sound files using a GNUnet directory instead of pro- cessing them with archivers such as tar or zip first). Directories can contain arbitrary meta data for each file. If a directory has missing blocks (for example, some blocks failed to download), GNUnet is typically able to retrieve information about other files in the directory. Files in a GNUnet directory have no particular order; the GNUnet code that generates a directory can reorder the entries in order to better fit the information about files into blocks of 32k. Respecting 32k boundaries where possible makes it eas- ier for gnunet-directory (and other tools) to recover information from partially downloaded directory files. At the moment, directories can be created by gnunet-fs-gtk and gnunet-publish. Just like ordinary files, a directory can be published in a namespace. GNUnet directories use the (unregistered) mimetype application/gnunet-directory. They can show up among normal search results. The direc- tory file can be downloaded to disk by gnunet-download(1) for later processing or be handled more directly by gnunet-fs-gtk(1). REPORTING BUGS
Report bugs by using mantis <https://gnunet.org/bugs/> or by sending electronic mail to <gnunet-developers@gnu.org> SEE ALSO
gnunet-fs-gtk(1), gnunet-publish(1), gnunet-search(1), gnunet-download(1) GNUnet 25 Feb 2012 gnunet-directory(1)