}
        return trusted;
    }

    /**
     * Check if the IP is in the whitelist.
     * @param ip the IP address to check
     * @return true if whitelisted
     */
    public boolean isWhitelisted(final String ip) {
        final Set<String> whitelist = ComponentUtil.getFessConfig().getRateLimitWhitelistIpsAsSet();
        final boolean whitelisted = whitelist.contains(ip);