hi Koh,
on NAV 2009 R2 (and R1) NAV WS (NAV web services) is a separate service, on NAV 2013 is all on one service (Client, WS, NAS etc.).
NAV WS is installed with NAV Server Installation
1) Microsoft Dynamics NAV Server -> NAV service tier
2) Microsoft Dynamics NAV Business Web Services -> NAV WS service handler
To configure WS: you need to insert your objects on 2000000076 Web Service table and check "Publish" (you can publish only codeunits and pages with NAV 2009 R2)
Configuration file is located on:
C:\Program Files (x86)\Microsoft Dynamics NAV\60\Service
"CustomSettings.config is configuration" file for NAV Service tier e WS Service
Web Service config section:
....
<add key="WebServicePort" value="7047"></add>
<!--
Turns on or off the https for Web Services
-->
<add key="WebServiceSSLEnabled" value="false"></add>
<!--
Maximum permitted size of a Web Services request, in kilobytes
-->
<add key="WebServicesMaxMsgSize" value="512"></add>
<!--
Turns on or off NTLM authentication protocol for Web Services
false: Use SPNEGO (recommended)
true: Use NTLM only
-->
<add key="WebServicesUseNTLMAuthentication" value="false"></add>
<!--
ex: if your Service tier is "DynamicsNAV"
http://localhost:7047/DynamicsNAV/WS/Services -> you can read all active and exposed WS services