Transcript sown_presentation_intro_sem2_0708

Southampton Open Wireless Network
www.sown.org.uk
Southampton Open Wireless Network
Talk outline
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Aims of SOWN
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Technical Outline
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Campus nodes
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Servers
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SOWN[at]HOME nodes
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What would I have to do?
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How to get involved
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Any questions?
www.sown.org.uk
Southampton Open Wireless Network
Aims of SOWN
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To provide free internet for ECS and other university students and the general
public
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City wide wireless coverage, creating a ‘Community Area Network’
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Internet and SOWN network access covering all useful areas such as pubs,
university etc.
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Explore new technologies such as IPv6, multicast ... Anything you want!
www.sown.org.uk
Southampton Open Wireless Network
Technical – On campus
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Originally three on campus nodes, back
links using 802.11a, this is now replaced
with the SOWN VLAN (over ISS Ethernet)
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Currently: SUSU node (on a pole on the
West Refectory building) running 
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Zepler with 802.11a (and soon b as well)
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Run embedded PCs with Voyage
Linux/OpenWRT
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High powered (>400mw) miniPCI wifi
cards
www.sown.org.uk
Southampton Open Wireless Network
Technical – Servers
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Rack mount servers located in building
32 (EEE)
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sown-auth – runs web server and
database for nodes and users, and
sends out config and other services
related to this. Lots of very important
stuff on here
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sown-vpn – responsible for all the vpn
tunnels and also VPN into and out of
SOWN VLAN, and Nagios network
monitoring
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sown-nat – allows access to the
internet for users of the on campus
nodes and for all machines to update
online etc. Also runs SNMP and cacti
to make pretty graphs
www.sown.org.uk
Southampton Open Wireless Network
Technical – More
Servers!
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Servers in Zepler (also
used to back up other
servers)
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sown-6core – IPv6
router for SOWN
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sown-vpn2 –
Development server for
testing
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Used for testing,
before rollouts on
main servers (e.g:
Nagios)
www.sown.org.uk
Southampton Open Wireless Network
Technical – SOWN[at]HOME
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Wireless access points to give out to users with no/minimal config necessary to
allow SOWN access to be broadcast from users house
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Just plug it in to a free network port on your router and switch on!
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Makes use of home ADSL line for internet access
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Tunnels are set up to sown-vpn so SOWN network access is granted.
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User authentication is passed down tunnel to sown-auth
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Nodes are from Meraki, but flashed with OpenWRT (linux distro for home
routers) and then configured to work with SOWN
www.sown.org.uk
Southampton Open Wireless Network
What SOWN needs:
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ENTHUSIASTIC PEOPLE!
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Continual improvement of the web interface for users and admins
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You don’t need to be an expert to begin with
Design and backend
Firmware updates
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Package management and configs
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Security
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Long distance wireless
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Deployment of new technologies: multicast, VoIP etc...
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Make SOWN bigger and better than ever before!
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If you are not so technically minded we have other jobs such as wiki overhaul
and documentation
www.sown.org.uk
Southampton Open Wireless Network
SOWN Semester 2
• 802.11a – more long range testing
• Multicast – SOWN TV?
• VoIP – Internal phone in your home
• 802.1x – Wireless security
• IP Mobility – Roaming services
www.sown.org.uk
Southampton Open Wireless Network
Buzzwords/Technology:
Quagga
OpenVPN
SSH
Cacti
VoIP
SNMP
RADIUS
DHCP
Zebra
RIP OSPF
PIMD
PHP
Shell scripting
LDAP
SSL
Nagios
iptables
Multicast
MySQL
IEEE802.11 alphabet
IPv6
Web2.0
Voyage Linux
Debian
Firmware
VLAN
Apache
OpenWRT
DNS
Wiki
www.sown.org.uk
Southampton Open Wireless Network
Get Involved
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Put a home node in your house!
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www.sown.org.uk
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#sown on irc.sown.org.uk (Webcentre IRC server)
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Email list
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Weekly meetings (and occasional ‘surgery’ days at the weekend for the extra
keen)
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Chat to us now!
www.sown.org.uk
Many thanks to:
• Les Carr and Tim Chown
• David Tarrant
• James Morse
• Dave Newman
• Andrew Willmott
• Nick Humfrey
• Colin Williams
• Many others, apologies if I have left you off!