The firewall is the crucial and vital device on your company or home network, and it's often disregarded. It's commonly forgotten about in a closet near your Internet Provider's modem or router. In certain cases, the Internet Service Provider has included minimal firewall functionality in their device.
Everything has a limit, and the outdated tech becomes, the more probable it is to break at the worst possible time. This principle applies to all types of technology, especially fences, tunnels, exchanges, servers, desktop PCs, cellphones, access points, and NAS systems. Cabling appears to be the only item that remains unaffected by age.