Protect your network
covered firewalls last issue, so check that out if you want to learn the ins and outs of packet-filtering on Linux. Now we’re going to cover them again, but this time we’re going for a more practical approach with IPFire, a dedicated distro for firewalls or other network appliances. You don’t need any particularly special hardware to run a firewall, an old machine or a Raspberry Pi is fine (we’ve included ISOs for 32-bit x86 machines as well as USB/SD Card images for 64-bit PCs and ARMv5 and later devices), but note that at least two network adapters are required. Be that as it may, you can also run IPFire in a virtual machine (which you can add as many virtual Ethernet adapters to
