Setting Up the Web Administration Interface 
Prerequisites
Either the Web Dispatcher or ICM is installed.
You have
package ICMADMIN.SAR. To find out where to find it or to get the latest
version see 
Operating the SAP Web
Dispatcher under section Importing the SAP Web
Dispatcher.
Procedure
...
1.
Define the
parameter icm/HTTP/admin_<xx>
in the Web Disaptcher/ICM
profile in the line:
icm/HTTP/admin_0 = PREFIX=/sap/admin,DOCROOT=./admin,PORT=8888,HOST=ls3022 .
This sets the URL prefix for the administration to /sap/admin and the path for the ICP control files to./admin.
With this parameter you can further restrict access to the Web administration interface - to a port (e.g. SSL port), to a local host name (e.g. “local host“), or to an external host name (only from this host can the Web administration interface be accessed).
2.
Specify this
port with icm/server_port_<xx> as the ICM port.
3.
Create an
administration user as described under Creating
Administration Users.The
authorization file icmauth.txt will be generated.
4. Make sure that file icmauth.txt (the file name can be named something else in icm/HTTP/admin_<xx>) exists in the work directory. If it does not, generate the authorization file icmauth.txt using program icmon, by calling icmon -a.
5. Unpack package icmadmin.SAR with the ICP control files into a subdirectory with the name admin, by calling SAPCAR ‑xvf icmadmin.SAR.
SAP Web Dispatcher: Alternative
You can generate the profile file for the Web dispatcher sapwebdisp.pfl and create the authorization file automatically icmauth.txt (with user icmadm). The SAP Web dispatcher is also automatically started with the generated profile. If the files already exist, they are not changed.
For this
purpose use the bootstrap option sapwebdisp –bootstrap, as described
in Starting
the SAP Web Dispatcher with the Bootstrap Option.
The Web dispatcher bootstrap creates a user icmadm in group admin with a random eight character password, and outputs, for example, the following:
Web Administration user is "icmadm" with password "RdUAs27F"
Result
You can now use the Web Administration Interface.
In the logon dialog box enter (in the above example) user icmadm and password RdUAs27F.
You can now set up other administration users.
After the SAP Web Dispatcher has been installed you should change the password of user icmadm.
More Information
SAP recommends you use SSL with the client certificate to access the administration interface. For more information see Using the Web Admin Interface with Certificate X.509.