A firewall is either a software-based or, in some cases, a hardware-based security system for networks. It automatically monitors traffic inflow and outflow on the system and blocks certain kinds of data flow based on
Network and Server administration is one of the key areas in which Linux is actually preferred to any other operating system. Hence most data center admins are well versed with the Linux command line. There
A server is application software that listens to requests over a network and returns the requested files, data, etc. Linux machines have servers installed for many different protocols: Eg. HTTP Server, SSH Server, FTP Server,