With this parameter you can configure Modifications of HTTP Requests in the Web Dispatcher or ICM. You can define rules by which the Web Dispatcher/ICM changes the HTTP request before it forwards it (header field manipulation, URL rewrite, and so on)
icm/HTTP/mod_0 = PREFIX=/,FILE=$(DIR_GLOBAL)/security/data/icm_filter_rules.txt
The filter rules are in file icm_filter_rules.txt in directory $(DIR_GLOBAL)/security/data
To have the same filter rules on all instances, store the file with the filter rules in a global directory and set the parameter in the default profile DEFAULT.PFL.
tags: url rewriting, sap, webdispatcher, wd filter rules, load balancing, reverse proxy, http, https, ssl, end to end, parameters,