Is there a way to use the context-params inside the web.xml
example
<context-param>
<param-name>AUTH_SERVER</param-name>
<param-value>10.126.35.10</param-value>
</context-param>
...
<filter>
<filter-name>NtlmHttpFilter</filter-name>
<filter-class>jcifs.http.NtlmHttpFilter</filter-class>
<init-param>
AUTH_SERVER
</init-param>
...
When you implement the filter probably you have to read the <init-param>
parameter of the filter. There, instead of reading the parameter of the filter, you can read directly the context param, using:
filterConfig.getServletContext().getInitParameter("paramName");
Does that solve your matter?