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Transcript
Internal Network External Network Internal Network WS Hub External Network Internal Network WS Hub External Network Internal Network WS S1 Hub External Network Internal Network WS S1 Hub S2 External Network Internal Network External Network WS S1 Hub S2 ISA Server 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. Internal Network External Network WS S1 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Hub S2 ISA Server 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 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 Internal Network WS External Network IP Address Issued by DHCP 192.168.50.? S1 Static IP Address 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Hub S2 ISA Server Internal Network External Network WS 192.168.50.? S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Hub 192.168.50.10 S2 ISA Server Internal Network External Network WS 192.168.50.? S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Hub 192.168.50.10 S2 Static IP Address 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server ISA Server Server Two • Exchange Server: • Preferred mail client – Outlook • RAS: • Remote Access Server Internal Network External Network WS 192.168.50.? S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server ISA Server Internal Network External Network WS 192.168.50.? Nefpx3 - 80 Proxy Server 10.10.10.19 : 80 S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server ISA Server Internal Network External Network WS 192.168.50.? Hipxy Proxy Nefpx3 - 80 Proxy Server 10.10.10.19 : 80 S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server ISA Server Internal Network External Network WS 192.168.50.? Hipxy Proxy Internet Nefpx3 - 80 Proxy Server 10.10.10.19 : 80 S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server 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 10.10.10.19 : 80 S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server 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 10.10.10.19 : 80 S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server 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 10.10.10.19 : 80 S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server 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 10.10.10.19 : 80 S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server 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 10.10.10.19 : 80 S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server 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 10.10.10.19 : 80 S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server 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 10.10.10.19 : 80 S1 192.168.50.26 AD, DNS and DHCP 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 S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server 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 10.10.10.19 : 80 S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 Cache 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server 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 10.10.10.19 : 80 Cache S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 Cache 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server 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 10.10.10.19 : 80 Cache S1 192.168.50.26 AD, DNS and DHCP 192.168.50.25 to 192.168.50.100 Switch Hub 192.168.50.10 Automatically Obtained IP Address 10.10.10.? S2 192.168.50.27 Exchange Server: Preferred mail client – Outlook RAS: Remote Access Server Cache ISA Server
