<prompt> Hlalosa sepheo sa firewall marangrang a likhomphutha.nan  <response>: Instruction in English: Describe the purpose of a firewall in computer networks. . Response in English: A firewall is a security system that monitors and controls incoming and outgoing network traffic based on previously established security rules. Its primary purpose is to create a barrier between an internal network and external sources such as the Internet to block malicious traffic such as viruses, hackers, and worms that attempt to access a computer system without authorization. Essentially, it acts as a filter, determining which data packets should be allowed to enter and exit the network based on a set of rules defined by the user or network administrator. This helps to protect the network from unauthorized access and potential security threats, keeping sensitive data and information safe. . Response in Sesotho: Firewall ke sistimi ea tsireletso e behang leihlo le ho laola sephethephethe sa marang-rang se kenang le se tsoang ho latela melao ea tsireletso e neng e thehiloe pele. Sepheo sa eona se ka sehloohong ke ho theha mokoallo pakeng tsa marang-rang a ka hare le mehloli e ka ntle e kang Inthanete ho thibela sephethephethe se kotsi se kang likokoana-hloko, li-hackers le liboko tse lekang ho kena tsamaisong ea khomphieutha ntle le tumello. Ha e le hantle, e sebetsa e le sefahla, se khethollang hore na ke lipakete life tsa data tse lokelang ho lumelloa ho kena le ho tsoa marang-rang ho latela melao e hlalositsoeng ke mosebedisi kapa mookameli oa marang-rang. Sena se thusa ho sireletsa marang-rang ho tsoa ho phihlello e sa lumelloeng le litsoso tse ka bang teng tsa tsireletso, ho boloka data ea bohlokoa le tlhahisoleseling li bolokehile. 