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Introducing ISA Server
• Protects resourcesProtects resources
• Connects directly to Connects directly to the Internet and your the Internet and your private networkprivate network
• Screens network trafficScreens network traffic
• Acts as a proxy for Acts as a proxy for internal servicesinternal services
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Microsoft ISA Server
Proxy Server 2.0• Optimize Internet web browsing by caching
the images and text from web pages to local servers.
Clients access to Internet quickly !
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Microsoft ISA Server
Microsoft Internet Security & Acceleration Server 2000
• Is an internet firewall and web cache which is capable of integrating into an existing Windows infrastructure.
• Focus more attention on the product’s security capabilities!
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Microsoft ISA Server
ISA Server 2004• was vastly improved over the previous
versions of the product, and it quickly became noticed in the wider security community.
• was originally released with only a standard edition of the product!
• Finally, predating the release of ISA Server 2006!
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Caching
• ISA Server supports caching as a way to improve the speed of retrieving information from the Internet
CacheCache
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FirewallsWhat is a Firewall?What is a Firewall?• A firewall is hardware, software, or a
combination of both that is used to prevent unauthorized programs or Internet users from accessing a private network and/or a single computer.
InternetInternet
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Firewalls
Firewall Rules:• Allow – traffic that flows automatically
because it has been deemed as “safe”.• Block – traffic that is blocked because it has
been deemed dangerous to your computer.• Ask – asks the user whether or not the traffic
is allowed to pass through.
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How ISA Server protects networks?
• ISA Server has full screening capabilities:– Packet filtering– Stateful inspection– Application-level inspection
• ISA Server blocks all network traffic unless you allow it.
• ISA Server is ICSA and Common Criteria certified.
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Network perimeters
The Internet Branch offices Business partners Remote users Wireless networks Internet applications
Network perimeters include connections to:
Business Partner
LAN
Main Office
LAN
LAN
Wireless Network
Remote User
Internet
Branch OfficeBranch Office
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ISA Server 2006’s New Features• Multiple network support and per-network
policies.• Support for complex and customizable protocols
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ISA Server 2006’s New Features
• New server and OWA(Outlook Web Access) publishing rules
• Remote Procedure Call (RPC) filtering support.
• End-to-end secure web publishing capabilities.