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Linux Apache Virtual Hosts (vhosts)

Virtual Hosting is the ability to run several different websites on the same server. There are a number of ways that this can be achieved,
using different port numbers for the webservers (instead of the default port 80); using different IP addresses aliased to the same server; or by using the information contained int the http header to determine which site the user is trying to access.

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Computer NetworkingComputersGeneralIT SecurityLinux

Linux – using a network time server (ntpd)

The network time protocol is a means to synchronise time clocks of devices over the Internet. As well as being a convenient way to make sure your PC shows the correct time it is often used to ensure that the time of servers and routers are in synchronization. This is particularly important for database transaction logging, stock related transactions, security logging and analysis, network monitoring and other time critical applications.

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