Security Plus Part 2
DNS lookup- dig command on Linux, you enter 'dig and website name like professor messer.com and it does a query (it shows the results of when it shows up). text based. on Windows, its nslookup command. 2.3 authentication server- you put name and password and it gives access to central server -not in personal home, since everyone can share the same password - in an enterprise, where we need more security everyone has their own credentials NTP server- network time protocol. all the computers need to reference the same time for accuracy. load server/balancer: is a system (hardware or software) that distributes incoming network traffic across multiple servers . it makes sure the site doesn't crash. it balances out the load amongst different servers, spreads the load. 2.4 DNS configuration DHCP-automatically give IP addresses to different devices in a large network. started in 1997. prevents someone having to do it manually. (dynamic host configuration protocol) 2.4 v...