<prompt> Ke mafika afe a sebelisoang ho etsa firewall?nan  <response>: Instruction in English: Which rocks are used to make a firewall? . Response in English: Firewalls are not made of physical rocks. The term firewall refers to a network security system that monitors and controls incoming and outgoing network traffic. It is a software or hardware-based solution that creates a barrier between an internal network and the internet, preventing unauthorized access and protecting against threats. . Response in Sesotho: Li-firewall ha li entsoe ka majoe a nama. Lentsoe firewall le bolela sistimi ea tsireletso ea marang-rang e behang leihlo le ho laola sephethephethe sa marang-rang se kenang le se tsoang. Ke software kapa tharollo e thehiloeng ho hardware e bakang mokoallo pakeng tsa marang-rang a ka hare le marang-rang, ho thibela phihlello e sa lumelloeng le ho sireletsa khahlanong le litšokelo. 