Скачать презентацию IT System for CIMSS IISc By the
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Скачать презентацию IT System for CIMSS IISc By the
Скачать презентацию IT System for CIMSS IISc By the
IT System for CIMSS, IISc • By the IT Subcommittee of the CIMSS Project – – – Jayant Haritsa (SERC) R. Krishnamurthy (SERC) Anurag Kumar (ECE, Convener) V. Kumaran (Chem. Engg. ) Y. N. Srikanth (CSA) V. Vinay (CSA) September 1, 1998 IT System for CIMSS, IISc
IT System Functions • System users – faculty, admin officers, and case workers • Document preparation, movement, storage, access and manipulation • Implementation of office workflow – e. g. , indent “flows” from faculty to chairman to purchase to audit, …etc. – authentication, annotation, and signatures at each step – tracking of workflows • The “IT System” is the platform on which these functions are implemented September 1, 1998 IT System for CIMSS, IISc
Design Considerations • Client independence – variety of hardware and operating systems on campus – system should not be client dependent • Difficult to maintain security and integrity of multiple servers in multiple locations – power supply, air-conditioning, cleanliness, etc. • Work should not actually flow to the clients – messy to recover from client crash – harder to track status of work • Aim for completely paperless system September 1, 1998 IT System for CIMSS, IISc
Design Decisions • Web based client server interaction – clients only need a web browser – plug -ins needed for digital signatures, and document upload • Central server – with redundant hardware and storage – in a well prepared site • All data and work-in-progress resides in data-base in central server – workflow implemented by manipulating references to the documents September 1, 1998 IT System for CIMSS, IISc
CIMSS central server Scanner and fax modem client Admin LAN Typical dept. LAN Campus network backbone (optical fibre) IT System for CIMSS, IISc Scanner and fax modem September 1, 1998 Server LAN firewall Server LAN Typical admin workstation client Existing systems Proposed systems CIMSS Network Architecture
CIMSS Central Server Off-the-shelf proprietary Programmable/configurable application software Server machine Web server with security features Redundant disks with CIMSS database Workflow software and database Secure socket management layer Standard system UNIX TCP/IP system UNIX operating system CIMSS server LAN to/from campus LAN September 1, 1998 IT System for CIMSS, IISc
Virtual Workflow Requests , and data entry forms Faculty member y entr data d , an y ts ues ntr Req rms ae t fo da ts, s s ue rm fo eq R Work does not “flow” between server and clients; only references change in data-base Admin officer Case worker September 1, 1998 CIMSS central server IT System for CIMSS, IISc
Layers of Security client central server web browser with authentication plugin secure socket layer digital signatures authenticated login; secret key session security, with key aging blocks unauthorised packets secure socket layer firewall campus network September 1, 1998 web server with public key certificate server IT System for CIMSS, IISc fingerprint-based security for console access
Product Selection (Hardware) • Central CIMSS server – SUN Ultra Sparc 450, with Solaris (UNIX) – redundant disk drives (RAID) – redundant power supply, ethernet controller, disk controller • Firewall – Cisco PIX – proprietary hardware and operating system – high performance • Clients – PCs with Windows 95/98, NT – PCs with Linux – Standard UNIX workstations September 1, 1998 IT System for CIMSS, IISc
Product Selection (Software) • Data base system – ORACLE enterprise server • Workflow definition software – ORACLE workflow • Web server – NETSCAPE • Public key server (Certification Authority) – included in the NETSCAPE server • Client web browser – Netscape or (MS) Internet Explorer September 1, 1998 IT System for CIMSS, IISc
Application Development • Server software – implementation of workflows – development of forms and interfaces • Client software – browser plug-ins for supporting: • digital signatures • upload of scanned documents (e. g. , quotations) September 1, 1998 IT System for CIMSS, IISc
Some Implementation Concerns • Central server location – stable power supply – prevention of fire, dampness, lightning strike, etc. • Data back-up – back-up copies should be stored in separate site • Security and authentication – at present only 40 -bit security available, owing to US export restrictions – this should be upgraded as and when available – key-aging, within sessions, is an interim solution September 1, 1998 IT System for CIMSS, IISc
Vendor Selection • First round of vendor proposals – – – Tata Consultancy Services CMC Planetasia Faculties India Tata Infotech Logic Point • Short list; second round – Planetasia – Tata Infotech • Final negotiations are under way with – Tata Infotech September 1, 1998 IT System for CIMSS, IISc
Скачать презентацию IT System for CIMSS IISc By the
af78c74f73cedea0d117ce1f7af1b0fd.ppt