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David Barrera ( email@example.com) is a postdoc in
the Network Security Group at ETH Zürich in Switzerland.
Laurent Chuat ( firstname.lastname@example.org) is a Ph.D.
student in the Network Security Group at ETH Zürich in
Adrian Perrig ( email@example.com) is a professor in the
Department of Computer Science and leads the Network
Security Group at ETH Zürich in Switzerland and an ACM
Raphael M. Reischuk ( firstname.lastname@example.org) is a senior
IT-security researcher at ETH Zürich in Switzerland
focusing on network and Web security.
Pawel Szalachowski ( email@example.com) is a senior
researcher in the Network Security Group at ETH Zürich
Copyright held by the authors.
Publication rights licensed to ACM. $15.00
sible, remote ASes can be connected via
IP tunnels, but their communication
depends on the BGP routing protocol.
As the testbed expands, we expect more
participants will connect directly to
benefit from SCION’s full feature set.
To use SCION, ISPs at a minimum
must deploy a border router capable
of “encapsulating” and “
decapsulat-ing” SCION traffic as it leaves or enters
their networks. SCION ASes must also
deploy certificate, beacon, name, and
path servers that can run on commodity
hardware. Deploying SCION in homes or
businesses is designed to require little effort, initially with no changes to existing
software or networking stacks or replacement of end-user network devices. This
ready connection is achieved through a
gateway device that transparently switches communication over to SCION if the
remote endpoint is also SCION-enabled.
Several companies are currently exploring commercialization of these technologies, notably the startup Anapaya Systems, which offers SCION routers.
SCION is an Internet architecture that
provides security, availability, transparency, control, scalability, and more
(see the sidebar “The Future Looks
Bright with SCION”). SCION offers
numerous advantages over the current Internet and supports other future Internet proposals as an underlying building block for highly reliable
Despite its research maturity following six years of effort, SCION is still
in its infancy in terms of deployment.
While requiring relatively small changes by ISPs and domains, broadening
adoption is SCION’s foremost goal. We
expect the benefits for various stakeholders will provide strong incentives
for adoption, leading to islands of SCION
deployment. In the long term, connections and mergers among islands will
enable ever-increasing numbers of native SCION end-to-end connections.
Working on SCION has let us consider
Internet architectures from a clean-
slate perspective. The absence of limit-
ing constraints (imposed by the current
Internet environment) has been par-
ticularly rewarding, as the deep explo-
ration of this problem space enables
us ask not how a future Internet can
achieve what the current Internet has
already achieved, but rather what addi-
tional features can and should a future
Internet offer. We anticipate the in-
sight into the possible applications of
a secure, dynamic, highly available net-
work will help engage the network com-
munity to leverage SCION for its appli-
cations and contribute to the project.
Our 2017 book SCION: A Secure
Internet Architecture describes the
architecture in more detail, including authentication, name resolution,
deployment, operation, extensions,
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