What is ISA Server 2004

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What is ISA Server 2004

• Microsoft Internet Security and Acceleration
  (ISA) Server 2004 is the advanced stateful packet
  and application-layer inspection firewall,
  virtual private network (VPN), and Web cache
  solution that enables enterprise customers to
  easily maximize existing information technology
  (IT) investments by improving network security
  and performance. ISA Server 2004 is available in
  two versions standard edition and enterprise
  edition.

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What is ISA Server 2004

• ISA Server is particularly well suited for
  protecting large enterprise network
  configurations requiring multiple firewall arrays
  in disparate locations that are running Microsoft
  client and server applications, such as Microsoft
  Office, Office Outlook Web Access 2003, Office
  SharePoint Portal Server 2003, Internet
  Information Services (IIS), Routing and Remote
  Access, Active Directory directory service, and
  many other Microsoft applications, servers, and
  services.

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What is ISA Server 2004

• ISA Server contains a full featured,
  application-layer aware firewall that helps
  protect organizations of all sizes from attack by
  both external and internal threats. ISA Server
  performs deep inspection of Internet protocols
  such as Hypertext Transfer Protocol (HTTP), which
  enables it to detect many threats that
  traditional firewalls cannot detect. The firewall
  also provides VPN client inspection for Microsoft
  Windows Server 2003-based quarantine solutions,
  helping to protect networks from attacks that
  enter through a VPN connection.

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Server One

• AD Active Directory
• DNS Domain Name Services
• DHCP Dynamic Host Configuration
• Start and Finish Address
• 192.168.50.25 to 192.168.50.100
• Exclusion Addresses are for Static IP like
• Servers
• Routers
• Gateways
• Printers

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Active Directory Structure
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Active Directory Naming Convention
OU   Group
     
ouComputers contains gsgComputers
ouStaff contains gsgStaff
  and gsgStaffSIMSUsers
  and gsgStaffOfficeUsers
ouStaff Teacher contains gsgStaffTeachers
ouStaff Admin contains gsgStaffAdmin
ouStaff Other contains gsgStaffOther
ouStaff Leavers contains gsgStaffLeavers
ouStudents contains gsgStudents
ouStudents 2003 Intake contains gsgStudents2003
ouStudents 2004 Intake contains gsgStudents2004
ouStudents 2005 Intake contains gsgStudents2005
etc.    
ouStudent Leavers contains gsgStudentsLeavers
ouStudents 1994 Intake contains gsgStudents1994
ouStudents 1995 Intake contains gsgStudents1995
etc.    
ouOther    
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IP Address Issued by DHCP
Static IP Address
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Static IP Address
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Server Two

• Exchange Server
• Preferred mail client Outlook
• RAS
• Remote Access Server

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Internal Network
External Network
WS
Internet
192.168.50.?
Hipxy Proxy
IE Looks at 192.168.50.10 8080
Nefpx3 - 80 Proxy Server 10.10.10.19 80
S1
Switch
192.168.50.26
Hub
AD, DNS and DHCP 192.168.50.25 to 192.168.50.100
Automatically Obtained IP Address 10.10.10.?
192.168.50.10
S2
192.168.50.27
ISA Server
Exchange Server Preferred mail client
Outlook RAS Remote Access Server
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What is Cache

• An area of disk space which stores the text and
  graphics of a viewed web page. When the web page
  is revisited, the Web browser will retrieve the
  data from the cache instead of downloading it
  again to save time.

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What is Cache

• Or, is an area on the hard disc of a computer
  where web pages and page elements (graphics etc)
  are stored when a page is downloaded from the
  Internet. If a page is revisited and the page, or
  elements of the page, are still held in cache
  then the computer will use the cache version to
  save time rather than download afresh. It also
  allows previously visited pages to be viewed
  offline.

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