WASD WATCH utility
The WATCH utility allows to to see how the server follows the rules you specified - IN REAL TIME (Well, almost). You need to have administrator access - that is: you must be able to use the web-based administration tool.
If you can, you find the WATCH utility on the screen:
Click that and you'll get a choice on what you want to examine:
In case you get messages like "Page not found" you probably would take a look at "mapping". If you run CGI-scripts, you may run into an error that the header is not CGI-compliant (you can switch that off, by the way, but CGI-scripts should comply to the rules :)), you will probably look at CGI and DCL - because a DCL error may trigger the error. If your pages do something on the network, you may want to look at network Data as well.
Just check the criteria you want. In my case, I had some trouble with mapping
rules and authorization, so I selected Mapping and Authorization: 
A "normal' session would look like this (just getting the home page of www.grootersnet.nl) :
16-NOV-2006 21:19:35 WATCH REPORT diana.intra.grootersnet.nl:80
-----------------------------------------------------------------
HTTPd-WASD/9.1.4 OpenVMS/AXP (10-JUL-2006 23:09:27.60)
HP TCPIP$IPC_SHR V5.5-ECO1 (27-JUL-2005 19:03:25.26)
$ CC (V8.2/70190015) /DECC /STAND=RELAXED_ANSI /PREFIX=ALL /OPTIMIZE /NODEBUG ...
Digital Personal WorkStation with 1 CPU and 256MB running VMS V8.2 (ODS-5 enabled, VMS NAML, ...
$ HTTPD /PRIORITY=4 /SYSUAF=RELAXED
AST:1994/2000 BIO:1997/2000 BYT:4906688/4999296 DIO:1000/1000 ENQ:457/500 FIL:289/300 ...
DCL Scripting: detached, as HTTP$NOBODY, PERSONA disabled
Process: HTTPd:80 OTHER HT_ROOT:[STARTUP]STARTUP_SERVER.COM;3 ....
Instances: DIANA::HTTPd:80
Watching: connect, request, response, mapping, authorize, error (915)
Client: "*" Service: "*" Path: "*"
|Time_______|Module__|Line|Item|Category__|Event...|
|21:19:39.18 NET 1504 0001 CONNECT MULTIHOME no match for 192.168.0.200,80 ....
|21:19:39.18 NET 1509 0001 CONNECT ACCEPTED 192.168.0.33,1488 on http:....
|21:19:39.18 SERVICE 1553 0001 CONNECT VIRTUAL www.grootersnet.nl:80|
|21:19:39.18 REQUEST 3702 0001 REQUEST GET /|
|21:19:39.18 MAPURL 1074 0001 MAPPING PATH /|
001 [IncludeFile] HT_ROOT:[LOCAL]webmail.conf
002 [[webmail.grootersnet.nl:80]]
011 [[www.grootersnet.nl:80]]
012 [IncludeFile] HT_ROOT:[LOCAL]basic.conf
013 / .. SET /ht_root/* stmLF
014 / .. SET /web/* stmLF
015 / .. SET /ht_root/doc/* map=ELLIPSIS
016 / .. SET /ht_root/src/* NOcache map=ELLIPSIS
...
034 [IncludeFile] HT_ROOT:[LOCAL]help.conf
035 / .. SCRIPT+ /conan* /cgi-bin/conan*
036 / .. SCRIPT+ /help* /cgi-bin/conan*
037 / .. SCRIPT+ /HyperReader* /cgi-bin/HyperReader*
038 / .. SCRIPT+ /HyperShelf* /cgi-bin/HyperShelf*
...
051 / Y- PASS /* /web_disk2/public/*
|21:19:39.19 MAPURL 1099 0001 MAPPING RESULT|
Mapped: /web_disk2/public/
Translated: web_disk2:[public] (ODS-5)
Script:
Script-File:
Run-Time:
|21:19:39.19 AUTH 1128 0001 AUTHORIZE PATH /|
001 [[www.grootersnet.nl:*]]
003 /ht_root/doc/* G:R W:-
005 /* G:R W:R
|21:19:39.19 AUTH 1314 0001 AUTHORIZE [NONE;-;-] - R ; - R|
|21:19:39.19 CACHE 0569 0001 RESPONSE CACHE search path 0700F00EA63A4C393133E862998601EF|
|21:19:39.19 CACHE 0569 0001 RESPONSE CACHE search file 0700F00EA63A4C393133E862998601EF|
|21:19:39.19 CACHE 0726 0001 RESPONSE CACHE revalidate WEB_DISK2:[public]INDEX.HTML;|
|21:19:39.19 CACHE 0882 0001 RESPONSE CACHE hit volatile WEB_DISK2:[public]INDEX.HTML;|
|21:19:39.19 FILE 1997 0001 RESPONSE NOT modified|
|21:19:39.19 REQUEST 0767 0001 REQUEST STATUS 304 rx:403 tx:183 bytes 0.009765 seconds|
|21:19:39.19 REQUEST 0992 0001 CONNECT PERSISTENT 1 192.168.0.33,1488|
|21:19:39.20 SERVICE 1553 0001 CONNECT VIRTUAL www.grootersnet.nl:80|
|21:19:39.20 REQUEST 3702 0001 REQUEST GET /Public.css|
|21:19:39.20 MAPURL 1074 0001 MAPPING PATH /Public.css|
001 [IncludeFile] HT_ROOT:[LOCAL]webmail.conf
002 [[webmail.grootersnet.nl:80]]
011 [[www.grootersnet.nl:80]]
012 [IncludeFile] HT_ROOT:[LOCAL]basic.conf
013 /Public.css .. SET /ht_root/* stmLF
014 /Public.css .. SET /web/* stmLF
015 /Public.css .. SET /ht_root/doc/* map=ELLIPSIS
016 /Public.css .. SET /ht_root/src/* NOcache map=ELLIPSIS
017 /Public.css .. MAP /httpd-internal-icons/* /httpd/-/*
...
034 [IncludeFile] HT_ROOT:[LOCAL]help.conf
035 /Public.css .. SCRIPT+ /conan* /cgi-bin/conan*
036 /Public.css .. SCRIPT+ /help* /cgi-bin/conan*
037 /Public.css .. SCRIPT+ /HyperReader* /cgi-bin/HyperReader*
038 /Public.css .. SCRIPT+ /HyperShelf* /cgi-bin/HyperShelf*
...
051 /Public.css Y- PASS /* /web_disk2/public/*
|21:19:39.20 MAPURL 1099 0001 MAPPING RESULT|
Mapped: /web_disk2/public/Public.css
Translated: web_disk2:[public]Public.css (ODS-5)
Script:
Script-File:
Run-Time:
|21:19:39.20 AUTH 1128 0001 AUTHORIZE PATH /Public.css|
001 [[www.grootersnet.nl:*]]
003 /ht_root/doc/* G:R W:-
005 /* G:R W:R
|21:19:39.20 AUTH 1314 0001 AUTHORIZE [NONE;-;-] - R ; - R|
|21:19:39.20 CACHE 0569 0001 RESPONSE CACHE search path 35BDB66AB430E0427A98511DDA85A495|
|21:19:39.20 CACHE 0569 0001 RESPONSE CACHE search file 35BDB66AB430E0427A98511DDA85A495|
|21:19:39.20 CACHE 0726 0001 RESPONSE CACHE revalidate WEB_DISK2:[public]Public.css;|
|21:19:39.20 CACHE 0882 0001 RESPONSE CACHE hit volatile WEB_DISK2:[public]Public.css;|
|21:19:39.20 FILE 1997 0001 RESPONSE NOT modified|
|21:19:39.20 REQUEST 0767 0001 REQUEST STATUS 304 rx:450 tx:183 bytes 0.005859 seconds|
|21:19:39.20 REQUEST 0992 0001 CONNECT PERSISTENT 2 192.168.0.33,1488|
|21:19:39.21 SERVICE 1553 0001 CONNECT VIRTUAL www.grootersnet.nl:80|
|21:19:39.21 REQUEST 3702 0001 REQUEST GET /cgi-bin/count.exe?display=counter&df=home....
|21:19:39.21 MAPURL 1074 0001 MAPPING PATH /cgi-bin/count.exe|
001 [IncludeFile] HT_ROOT:[LOCAL]webmail.conf
002 [[webmail.grootersnet.nl:80]]
011 [[www.grootersnet.nl:80]]
012 [IncludeFile] HT_ROOT:[LOCAL]basic.conf
013 /cgi-bin/count.exe .. SET /ht_root/* stmLF
014 /cgi-bin/count.exe .. SET /web/* stmLF
...
023 /cgi-bin/count.exe Y- EXEC /cgi-bin/* /cgi-bin/*
|21:19:39.21 MAPURL 1099 0001 MAPPING RESULT|
Mapped:
Translated:
Script: /cgi-bin/count.exe
Script-File: CGI-BIN:[000000]COUNT.EXE
Run-Time:
|21:19:39.21 AUTH 1128 0001 AUTHORIZE PATH /cgi-bin/count.exe|
001 [[www.grootersnet.nl:*]]
003 /ht_root/doc/* G:R W:-
005 /* G:R W:R
|21:19:39.21 AUTH 1314 0001 AUTHORIZE [NONE;-;-] - R ; - R|
|21:19:39.21 AUTH 1128 0001 AUTHORIZE PATH (none)|
001 [[www.grootersnet.nl:*]]
003 /ht_root/doc/* G:R W:-
005 /* G:R W:R
006 /cgi-bin/* G:R W:R
007 [[homedesk.grootersnet.nl:*]]
010 [[webmail.grootersnet.nl:*]]
013 [[genealogy.grootersnet.nl:*]]
016 [[192.168.0.200:82]]
|21:19:39.22 AUTH 1269 0001 AUTHORIZE NONE applies|
|21:19:39.22 DCL 1296 0001 RESPONSE SCRIPT as HTTP$NOBODY
CGI /cgi-bin/count.exe CGI-BIN:[000000]COUNT.EXE ()|
|21:19:39.27 REQUEST 0767 0001 REQUEST STATUS 200 rx:396 tx:2578 bytes 0.063473 seconds|
|21:19:39.27 REQUEST 0992 0001 CONNECT PERSISTENT 3 192.168.0.33,1488|
But if you have a problem, it will show up directly:
|21:32:41.45 MAPURL 1079 0001 MAPPING VMS WEB_DISK2:[public]watte| 001 [IncludeFile] HT_ROOT:[LOCAL]webmail.conf 002 [[webmail.grootersnet.nl:80]] 011 [[www.grootersnet.nl:80]] 012 [IncludeFile] HT_ROOT:[LOCAL]basic.conf 013 /web_disk2/public/watte .. SET /ht_root/* stmLF 014 /web_disk2/public/watte .. SET /web/* stmLF ... 034 [IncludeFile] HT_ROOT:[LOCAL]help.conf ... 051 /web_disk2/public/watte Y- PASS /* /web_disk2/public/* |21:32:41.45 MAPURL 1090 0001 MAPPING RESULT /watte| |21:32:41.45 ERROR 1473 0001 RESPONSE REQUEST:4900 (basic-only) 404(000) %X00018292 "Document not found" "/watte" "(no information)"| |21:32:41.45 REQUEST 0767 0001 REQUEST STATUS 404 rx:503 tx:864 bytes 0.013671 seconds| |21:32:41.45 REQUEST 0992 0001 CONNECT PERSISTENT 1 192.168.0.33,1515|
Obvious since I specified a page that doesn't exist. (http://www.grootersnet.nl/watte)
Same applies for authentication: If you have an error there, use WATCH to track it down.
Don't be alarmed by the amount of output. Once you get the feeling of it, you won't want to miss it!