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By
Ruth Helwig, Systems Librarian
Central Michigan University
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Krista Graham, Electronic Services
Coordinator
Central Michigan University |
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With the help of
Steven Thomas, Librarian
Central Michigan University
Off-Campus Library Services |
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1. Definition of a proxy server |
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2. Discussion of INNOPAC tables |
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3. User Instructions |
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4. Troubleshooting Web Access
Management |
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“A server that sits between a client
application, such as a web browser, and a real server. It intercepts all requests to the real
server to see if it can fulfill the requests itself. If not, it forwards the request to the
real server.”
http://webopedia.internet.com |
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Allows remote connection to subscription
databases from homes and labs |
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Controls access to networked resources by
authenticating users |
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Controls access to networked resources by
restricting access by IP address |
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A proxy server |
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It authenticates the user against the Innopac
patron database |
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Verifies that the user can access the requested
server and either permits or denies access |
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If access is allowed, WAM hides the user’s IP
address from the remote server |
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If no Javascripting use tokens |
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If there is Javascripting use proxy access |
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Proxy is more work for the end user and for
libraries – training/documentation |
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Token does not require user setup |
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Proxy may not work behind firewalls |
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Proxy does not work if proxy in place |
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“Cookies” must be enabled for token method |
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Browser problems with proxy method |
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Software can handle both at once |
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Need to consider patron confusion – Proxy needed
for some |
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Need two types of URLs |
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Need to know whether vendor is using
javascripting |
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Need to monitor whether vendor adds
javascripting |
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Each remote server in the forward table is
assigned a token |
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The token appears in the link instead of the
actual URL |
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Syntax = /wm/<token> |
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e.g. <A HREF=/wm/lexis/universe>Go to
Lexis-Nexis</A> |
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Include a token when adding the entry to the
forward table. |
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Standard URL without token |
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User’s browser must be configured |
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Restricting access to legitimate users: |
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IP based restrictions |
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Login restrictions |
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Patron type restrictions |
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Associating an in-coming IP with a login name in
Telnet and HTTP tables: |
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Configure incoming IP access |
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Set parameters for each IP or group of IP’s |
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Identify whether incoming ip can access the
resources: either yes, no or maybe? |
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Assign service level 0-9 |
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REMOTE HOST
ACCESS? LOGIN NAME SERVICE LEVEL |
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1 > 141.209.29. Yes
webpac2 0 |
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2 > 141.209.34. Yes
webpac1 0 |
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3 > 141.209. Yes
web 0 |
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4 > all Yes webremot
0 |
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Define your user base |
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Decide who will have access? students, faculty,
staff, adjuncts, visitors, distance learning students |
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Decide how expired patrons or patrons with
excess fines/lost books will be handled? |
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Determine if you will restrict by active users |
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U of M –Dearborn creates a new patron category
for non-returning patrons |
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Keep patron files up-to-date, purging if
appropriate |
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Maintain patron block table |
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The IP login parameters with the WAM parameters
combine to determine who may access web-based resources. |
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Up to 150 unique entries |
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WAM only proxies servers in the Forward Table |
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Table is processed top to bottom |
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Token: used with token access (Not for use w
Java) |
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IP address/host name: resource’s IP |
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Port : port on the resource machine for HTTP
access |
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Srv:
minimum service level required for access |
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Ver?
Verify (yes, no, service
level) |
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Ptype
patron types who may access this resource |
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Database name: name displayed in list |
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DB ID: identifies specific database on server |
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Token
IP Addr/Host Name Srv Ver?
Ptype DB ID Database Name |
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ahl
*.abc-clio.com 0 y
0-5,7-19,2 AHL and HA |
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lexis
*.lexis-nexis.com 0 y
0-5,7-19,2 univers Academic Unive |
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cis
*.lexis-nexis.com 0 y
0-5,7-19,2 congcom CIS Cong. Univ |
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coll
www.collegesource. 0 y
0-5,7-19,2 CollegeSource |
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icpsr
www.icpsr.umich.ed 0 y
0-5,7-19,2 ICPSR
Homepage |
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jstor
*.jstor.org 0 y
0-5,7-19,2 J-STOR |
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pld
pld.chadwyck.com 0 y
0-5,7-19,2 Patrologia
Lat |
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oclcfs
*.oclc.org 0 y
0-255 Firstsearch |
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silver
*.silverplatter.co 0 y
0-255 BA,MMY,MLA,SD, |
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PC with modem and suite of phone numbers linking
to IP’s outside your ISP range. |
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Load PC with latest and older versions of
Netscape and InterNet Explorer |
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Purchase AOL account |
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Purchase cable modem account |
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Purchase WebTV account |
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Enter new resources into WAM table |
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Remove expired trials or canceled resources |
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Work with vendors to resolve issues |
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Know license restrictions And include Innopac IP
in vendor contracts |
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Keep statistics |
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Keep instructions current |
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Add URL's to 856 tags in records |
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Add remote server to Forward Table |
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Access these titles via the Opac both on and off
campus |
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You will need : |
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A “research databases” access page |
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A patron verification page |
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Proxy configuration instructions |
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A troubleshooting guide |
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SYSTEM REQUIREMENTS |
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Netscape Navigator/Communicator 3.x or higher,
or Microsoft Internet Explorer 3.02 or higher. |
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Java and JavaScript enabled in your browser. |
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Cookies enabled in your browser. |
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Have you followed the configuration
instructions? |
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Did the user manage to access the patron
verification screen? |
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Record #16,197 – Web Access Management |
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Record #14,832 – Logon Administration |
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Record #16,374 - Specifying the URL to an
INNOPAC Reference Database |
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Record #16,260 - URL Verification |
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Record #15,269 – Limit Network Access |
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Record #16,214 – Custom Patron Verification |
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Record #16,405 – Editing Web Screens |
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CMU Libraries’ Remote Access Instruction Page |
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www.lib.cmich.edu/databases/remote.htm |
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CMU Distance Education WAM FAQ Page |
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www.lib.cmich.edu/ocls/researchdbs/wamfaq.htm |
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CMU Distance Education Troubleshooting Page |
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www.lib.cmich.edu/ocls/researchdbs/trouble.htm |
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This presentation |
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www.lib.cmich.edu/staff/IUG2000/ |
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Notes