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WS - The ICT Help Center

Transcript WS - The ICT Help Center

Internal Network
External Network
Internal Network
WS
Hub
WS
External Network
Internal Network
WS
S1
Hub
WS
External Network
Internal Network
External Network
WS
S1
Hub
WS
ISA
Server
Internal Network
External Network
WS
S1
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
WS
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
Static IP Address
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
192.168.50.10
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
Static IP Address
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
Switch
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
Nefpx3 - 80
Proxy Server
10.10.10.21 : 80
Static IP Address
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
Switch
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
Hipxy Proxy
Nefpx3 - 80
Proxy Server
10.10.10.21 : 80
Static IP Address
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
Switch
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
Hipxy Proxy
Internet
Nefpx3 - 80
Proxy Server
10.10.10.21 : 80
Static IP Address
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
Switch
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
Hipxy Proxy
Internet
IE Looks at
192.168.50.10 : 8080
Nefpx3 - 80
Proxy Server
Static IP Address
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
10.10.10.21 : 80
Switch
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
Hipxy Proxy
Internet
IE Looks at
192.168.50.10 : 8080
Nefpx3 - 80
Proxy Server
Static IP Address
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
10.10.10.21 : 80
Switch
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
Hipxy Proxy
Internet
IE Looks at
192.168.50.10 : 8080
Nefpx3 - 80
Proxy Server
10.10.10.21 : 80
Static IP Address
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
Switch
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
Hipxy Proxy
Internet
IE Looks at
192.168.50.10 : 8080
Nefpx3 - 80
Proxy Server
10.10.10.21 : 80
Static IP Address
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
Switch
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
Hipxy Proxy
Internet
IE Looks at
192.168.50.10 : 8080
Nefpx3 - 80
Proxy Server
10.10.10.21 : 80
Static IP Address
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
Switch
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
WS
External Network
IP Address Issued by DHCP
192.168.50.?
Hipxy Proxy
Internet
IE Looks at
192.168.50.10 : 8080
Nefpx3 - 80
Proxy Server
10.10.10.21 : 80
Static IP Address
S1
Static IP Address
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Hub
Switch
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
192.168.50.?
IP Address Issued by DHCP
ISA
Server
Internal Network
External Network
WS
192.168.50.?
Hipxy Proxy
Internet
IE Looks at
192.168.50.10 : 8080
Nefpx3 - 80
Proxy Server
10.10.10.21 : 80
S1
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Switch
Hub
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
Cache,
What is it
WS
192.168.50.?
ISA
Server
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.
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.
Internal Network
External Network
WS
192.168.50.?
Hipxy Proxy
Internet
IE Looks at
192.168.50.10 : 8080
Nefpx3 - 80
Proxy Server
10.10.10.21 : 80
S1
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Switch
Hub
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
Cache
192.168.50.?
ISA
Server
Internal Network
External Network
WS
192.168.50.?
Hipxy Proxy
Internet
IE Looks at
192.168.50.10 : 8080
Cache
Nefpx3 - 80
Proxy Server
10.10.10.21 : 80
Cache
S1
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Switch
Hub
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
Cache
192.168.50.?
ISA
Server
Internal Network
External Network
WS
192.168.50.?
Hipxy Proxy
Internet
IE Looks at
192.168.50.10 : 8080
Cache
Nefpx3 - 80
Proxy Server
10.10.10.21 : 80
Cache
S1
192.168.50.26
AD, DNS, DHCP and Exchange
192.168.50.25 to 192.168.50.100
Switch
Hub
192.168.50.10
Automatically Obtained IP
Address 10.10.10.?
WS
Cache
192.168.50.?
ISA
Server
Server
•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
Server
Exchange Server:
Preferred mail client – Outlook
RAS:
Remote Access Server
Active Directory Structure
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
ouStudent Leavers
contains
gsgStudentsLeavers
ouStudents 1994 Intake
contains
gsgStudents1994
ouStudents 1995 Intake
contains
gsgStudents1995
etc.
etc.
ouOther
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.
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.
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.