ads nat wrote:

I want to get hands on experience of using iptables, DMZ firewall, DHCP firewall, etc.for which Tutorial says I need to compile kernal with following options OR as modules :

CONFIG_NETFILTER

CONFIG_IP_NF_CONNTRACK

CONFIG_IP_NF_IPTABLES

CONFIG_IP_NF_MATCH_LIMIT

CONFIG_IP_NF_MATCH_STATE

CONFIG_IP_NF_FILTER

CONFIG_IP_NF_NAT

CONFIG_IP_NF_TARGET_LOG

I have installed Redhat Linux 8.0 on server machine which by default installs iptables 1.2.6a.

Do Redhat 8.0 install all these modules. How to check whether these modules are installed or not.

Thanks

The stock Redhat kernels load these routines as modules. Run: /sbin/lsmod to see which modules are currently loaded. Note that the module name is not going to be the exact same name as the kernel option i.e. if kernel option CONFIG_IP_NF_CONNTRACK is loaded as a module it will be loaded as module ip_conntrack.

Jeff