netfilter and /proc

Hi:

First of all thanks for reading this.
Anyone knows how I can know if the following options are activated in the kernel(2.4.x) of a running machine? It is posible through any file in the /proc filesystem?

IP: advanced router (CONFIG_IP_ADVANCED_ROUTER

IP: policy routing (CONFIG_IP_MULTIPLE_TABLES)

IP: use netfilter MARK value as routing key (CONFIG_IP_ROUTE_FWMARK)

Thanks