│     -> Networking                                                                                                                                      │  
  │       -> Networking support (NET [=y])                                                                                                                 │  
  │         -> Networking options                                                                                                                          │  
  │           -> Network packet filtering (replaces ipchains) (NETFILTER [=y])                                                                             │  
  │             -> IP: Netfilter Configuration                                                                                                             │  
  │               -> IP tables support (required for filtering/masq/NAT)