Freifunk

Freifunk, German for “free radio,” is a decentralized, non-commercial initiative supporting community-built wireless computer networks, primarily in Germany. It belongs to the wider international wireless community-network movement, in which residents, volunteer groups, civic organizations and technical enthusiasts deploy and operate local networks without relying entirely on conventional telecommunications providers. Rather than functioning as a conventional company with a single headquarters, product catalog or centralized management structure, Freifunk consists of many local communities that share principles, software, technical knowledge and public-interest goals. The initiative seeks to create large-scale free Wi-Fi infrastructure that is decentralized, locally governed and owned by the people who operate it. Its networks are intended to support local communication and provide open connectivity. Participation is guided by the Pico Peering Agreement, a community agreement that establishes expectations for sharing network resources and forwarding other participants’ traffic. The agreement reflects Freifunk’s emphasis on non-discrimination, openness and network neutrality. Freifunk networks generally use wireless mesh technology. Multiple routers form an ad hoc network and exchange routing information through specialized software. If one router or link becomes unavailable, the routing system can calculate an alternative path, allowing the network to continue operating without a single central access point. Local communities select hardware, routing protocols and firmware variants suited to their circumstances. Freifunk firmware is based on OpenWrt and other free software. Implementations have used protocols including OLSR and B.A.T.M.A.N.; development of B.A.T.M.A.N. has been strongly associated with volunteer Freifunk activists. The movement’s German roots are connected with the BerLon workshop on free wireless community networks held in October 2002 in Berlin and London. The workshop helped produce the Pico Peering Agreement and encouraged regular Berlin meetings, including gatherings at the c-base hackerspace. Around the same period, the freifunk.net website was established. In September 2003, activists founded Förderverein Freie Netzwerke e.V., a non-profit association intended to support free communication infrastructures. The availability of inexpensive off-the-shelf wireless routers and easier installation of community firmware helped the model spread to cities and regions throughout Germany. Freifunk has also operated as a civil-society response to legal and social barriers to open Internet access. In Germany, the former interpretation of secondary liability, commonly associated with the Störerhaftung provisions affecting public Wi-Fi operators, created uncertainty for people and organizations that allowed others to use their Internet connections. Rights holders could pursue connection owners over alleged copyright infringements committed by third parties. In 2012, the Berlin community promoted the Freifunk Freedom Fighter Box, a preconfigured access point that routed public-network traffic through a virtual private network terminating in Sweden, where the relevant liability environment was different. Later European and German court decisions between 2016 and 2018 substantially narrowed the practical scope of secondary liability, improving the legal environment for public hotspots. The network has expanded through local projects rather than through a single national rollout. The reference material describes roughly 400 local communities and more than 41,000 access points, with especially large communities in Münster, Aachen, Munich, Hanover, Stuttgart and Uelzen. Hamburg had more than 300 nodes in 2013, using VPN tunnels to the Netherlands. Berlin has also developed a longer-distance backbone using microwave links, with support from Medienanstalt Berlin-Brandenburg. Freifunk remains best understood as an open technical and social movement: its enduring value lies in community ownership, volunteer infrastructure, free software, local resilience and advocacy for accessible communications.

Freifunk emerged from the early-2000s European wireless-community-network movement. A key formative event was the BerLon workshop held in October 2002 in Berlin and London. Participants discussed how communities could build open wireless networks and developed the Pico Peering Agreement, which sets out principles for sharing network capacity and forwarding traffic belonging to other users. The workshop also helped establish a continuing Berlin community, including regular meetings at the c-base hackerspace. The German-language freifunk.net website was created around this period. In September 2003, activists founded Förderverein Freie Netzwerke e.V., a non-profit association supporting free communication infrastructures. Freifunk then spread through local groups across Germany. The movement benefited from the increasing availability of inexpensive wireless routers and from simpler installation of community-developed firmware. Instead of deploying one centrally administered network, local communities built their own infrastructure, selected their own technical configurations and coordinated through shared values, events and software projects. The annual Wireless Community Weekend in Berlin became one of the recurring meeting points for this ecosystem. Technically, Freifunk uses wireless mesh networking. Routers connect with one another through ad hoc links and routing software, allowing traffic to take alternate paths when individual nodes or links fail. Firmware variants are based on OpenWrt and other free software. Different communities have used different hardware and protocols, including OLSR and B.A.T.M.A.N. The latter’s development has been driven significantly by Freifunk volunteers and has become an important contribution to community-network technology. Freifunk’s development was shaped not only by engineering but also by German communications law. Before later court decisions clarified the issue, the country’s secondary-liability regime made operators of open wireless access points worry that they could be held responsible for copyright infringements committed by users of their connections. This discouraged some businesses, public venues and private individuals from opening networks. In 2012, the Berlin community publicized the Freifunk Freedom Fighter Box, which used a preconfigured wireless access point and a VPN connection to Sweden to address this legal risk. The project became a prominent example of Freifunk’s combination of practical infrastructure and public advocacy. Local deployments continued to grow. In 2013, Hamburg had more than 300 nodes connected using VPN tunnels to the Netherlands. Berlin developed a microwave-based backbone for longer-distance links, with funding from Medienanstalt Berlin-Brandenburg. The broader initiative eventually encompassed hundreds of local communities and tens of thousands of access points. The reference material identifies approximately 400 communities and over 41,000 access points, with major concentrations in Münster, Aachen, Munich, Hanover, Stuttgart and Uelzen. Court rulings issued from 2016 through 2018 by the European Court of Justice and the Bundesgerichtshof reduced the scope of secondary liability in Germany. These decisions improved the legal conditions for public Wi-Fi and addressed one of the principal obstacles that Freifunk had highlighted. Freifunk continues as a decentralized movement rather than a conventional corporate brand, combining volunteer administration, open-source networking, local community ownership and support for free communication infrastructure.

• 2018

  Secondary-liability restrictions clarified

  [1]Freifunken.wikipedia.org

  European and German court rulings issued over the preceding years substantially narrowed secondary liability and improved the legal feasibility of public Wi-Fi in Germany.

• 2013

  Hamburg network surpasses 300 nodes

  [1]Freifunken.wikipedia.org

  Hamburg Freifunk operated more than 300 nodes and connected the network through VPN tunnels to the Netherlands.

• 2012

  Freedom Fighter Box project

  [1]Freifunken.wikipedia.org

  The Berlin community introduced a preconfigured router using a VPN connection to Sweden as a response to Germany’s then-restrictive secondary-liability environment.

• 2003

  Förderverein Freie Netzwerke e.V. founded

  [1]Freifunken.wikipedia.org

  Activists founded the non-profit association Förderverein Freie Netzwerke e.V. to support free communication infrastructures.

• 2002

  BerLon workshop and Pico Peering Agreement

  [1]Freifunken.wikipedia.org

  The Berlin-London workshop on free wireless community networks helped establish the Pico Peering Agreement and encouraged the creation of a continuing Berlin Freifunk community.

Freifunk positions itself as a decentralized, non-commercial and community-owned alternative to centrally controlled connectivity. Its identity combines open wireless access, free software, local self-organization, network neutrality, resilience and advocacy for the social and legal legitimacy of public Internet infrastructure.

• Open-source networking software

  Freifunk firmware

  Community-developed firmware for compatible wireless routers, based on OpenWrt and other free software. Local Freifunk groups maintain different implementations for particular hardware, routing protocols and network designs. The firmware enables routers to participate in mesh networks and provide open wireless access.

• Wireless network infrastructure

  Freifunk community mesh networks

  Locally organized networks made from interconnected wireless routers. Mesh routing allows traffic to be redirected when a node or link fails, while community operators retain local control over equipment and access policies consistent with Freifunk principles.

• Network access hardware · 2012

  Freifunk Freedom Fighter Box

  A preconfigured access-point project promoted by the Berlin community in 2012. It directed traffic from the public wireless network through a VPN endpoint in Sweden, seeking to reduce the legal exposure created by Germany’s former secondary-liability rules for open Internet connections.

• Mesh-routing protocol

  B.A.T.M.A.N.

  A volunteer-driven mesh-routing technology associated with Freifunk activists. It is designed to help distributed wireless nodes discover routes and forward traffic without requiring a centralized network controller.

• 2012Freifunk Freedom Fighter Box

  Germany

  The Berlin Freifunk community promoted a preconfigured open-network router that routed traffic through Sweden over a VPN. The initiative responded to the chilling effect of Germany’s former secondary-liability rules on public Wi-Fi operators.

  Outcome. The project attracted media attention and became a prominent technical and political response to the legal barriers facing open wireless access.

  Source
• Wireless Community Weekend

  Germany

  An annual Berlin gathering bringing together people involved in wireless community networks, open-source firmware and Freifunk projects.

  Source

• 2012

  Use VPN routing to address secondary-liability riskStrategy

  Background

  Germany’s former interpretation of secondary liability made operators of open Wi-Fi networks concerned that they could face claims over users’ alleged copyright infringements.

  Action taken

  The Berlin community developed and promoted the Freedom Fighter Box, which routed public-network traffic through a VPN endpoint in Sweden.

  Aftermath

  The project increased public awareness of the legal barriers to open Wi-Fi. Later court rulings substantially reduced the relevant liability risk in Germany.

  Source

• Develop decentralized community-owned infrastructureStrategy

  Background

  Freifunk’s stated aims emphasize free communication, local control, non-discrimination and networks owned by their participants rather than by a single centralized operator.

  Action taken

  Local communities deploy mesh nodes, maintain firmware and build interlinked wireless or microwave backbones using open-source technology.

  Aftermath

  The model expanded into hundreds of German local communities and tens of thousands of access points.

  Source

1. 1Freifunken.wikipedia.org
2. 2Freifunk official websitefreifunk.net