If your SAP Netweaver Administration page don’t open and it gives error like “403 Forbidden : Remote Access to the NetWeaver Administration is Forbidden” then you can try the following solution…
1 - Add the following line to your DEFAULT.PFL
icm/HTTP/mod_0 = PREFIX=/,FILE=$(DIR_GLOBAL)/security/data/icm_filter_rules.txt
2 - If you do not want to restrict access to the administration requests to certain clients then remove the lines from the icm_filter_rules.txt file.
#if %{REMOTE_ADDR} !stricmp 127.0.0.1 [AND]
#if %{REMOTE_ADDR} !stricmp ::1
#RegIRedirectUrl ^/webdynpro/resources/sap. com/tc~lm~itsam~ui~mainframe~wd
/(.)*$ /nwa/remote_access_error [QSA]
3 - Restart JAVA Stack
