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cuttlefishblueData Management

Dec 16, 2012 (4 years and 6 months ago)

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Free software 
in the commercial environment
Chris Halls
credativ ltd
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Contents

About the speaker

Adoption of free software in the UK

Linux in the server room

Example: Security filter

Making the switch
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Community:

Free Software
1992

Linux
1993

Debian GNU/Linux
2000

OpenOffice.org
2001
About the speaker
 
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About the speaker
Career

Derivatives trading
1996
software developer

IT manager
1999

Linux consultant
2004

Manager credativ ltd
2005
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About credativ
Free software support & services
Founded 1999
Independent
Open Source Support Centre
Offices in UK & Germany
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About credativ
10 Debian developers
PostgreSQL, Gnome, KDE, 
OpenOffice.org, ...
Open Source Consortium
Linux Verband
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Linux in the UK
Adoption slow
Lack of government support
Training Microsoft centric
Purchasing methods favour 
commercial software
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UK Linux adoption
Slower than other European 
countries
Germany
Spain
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Linux in Germany
Widespread public sector usage
German parliament
Foreign office
City of Munich
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Linux usage in the UK
Server infrastructure
Web servers
Databases
File server
Mail servers
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Web servers
Apache HTTP server
First release 1995
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Apache usage
Active websites May 2007
Apache
Microsoft
Other
source: Netcraft
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Database servers
PostgreSQL in the enterprise
Cost savings
High performance
Transaction integrity
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Email services
SMTP servers 
Sendmail, postfix
Antispam
spamassassin, bogofilter
Antivirus
clamav
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Open Security Filter
Drop in mail filter based on free software

Spam filtering ­ SpamAssassin

Virus scanner ­ ClamAV

Firewall – Linux iptables
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Security filter architecture
Scan Node 3 
SMTP
Entry Node
Scan Node 2
Scan Node 1
Backup Entry

Node n

Log Server
Firewall
Internet
Management
Station
RBL Server
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Security Cluster 
,

Scalable from 1-100 machines in
a single cluster

High availability

Independent of OS

Based on free software
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Security Cluster 
 
Schematic
Location 1 - Firewall
Location 2 - Firewall
Internet
Entry 1
Entry 2
Entry 1
Entry 2
Node 1
Node 2
Node ...
Node n
Node 1
Node 2
Node ...
Node n
Mail server
Mail server
Management /
Logging / RBL
Management /
Logging / RBL
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Free software
on the Windows desktop
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Reasons to adopt
Financial
Stability
Security
Flexibility
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Free software: Debian
 

Open project run by volunteers
 

Supports most architectures
 

International adoption
 

One of the most popular distributions
 

Largest GNU/Linux distribution 
 

Freedom at its core
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Return on investment
in free software
High quality
Open standards
Portability
Influence
Updates
Independence from suppliers
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Chris Halls / credativ
www.credativ.co.uk
Questions?
Free software in the commercial 
environment