protected boolean shouldDoSpnego(final String remoteIp) throws Exception {
        return ipPatternCanBeChecked(remoteIp) && ipPatternMatches(remoteIp);
    }
Default implementation -- check the IP filter.

@param remoteIp the remote ip
@return true boolean
@throws Exception the exception
support/cas-server-support-spnego-webflow/src/main/java/org/apereo/cas/web/flow/client/BaseSpnegoKnownClientSystemsFilterAction.java