| + + | ++To Docker είναι μια πλατφόρμα λογισμικού ανοιχτού κώδικα που υλοποιεί Εικονικοποίηση (Virtualization) σε επίπεδο Λειτουργικού Συστήματος. + | +
| -This tutorial demonstrates some common Nmap port scanning scenarios and explains the output. +This tutorial demonstrates some common nmap port scanning scenarios and explains the output. + | +
| + + | ++tcpdump is a common packet analyzer that runs under the command line. It allows the user to display TCP/IP and other packets being transmitted or received over a network to which the computer is attached. Distributed under the BSD license, tcpdump is free software. + | +
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+Netfilter offers various functions and operations for packet filtering, network address translation, and port translation, which provide the functionality required for directing packets through a network and prohibiting packets from reaching sensitive locations within a network. +
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+iptables is a command line utility for configuring Linux kernel firewall implemented within the Netfilter project. The term ''iptables'' is also commonly used to refer to this kernel-level firewall. It can be configured directly with iptables, or by using one of the many + |
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+When a packet first enters the firewall, it hits the hardware and then gets passed on to the proper device driver in the kernel. +
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+Then the packet starts to go through a series of steps in the kernel, before it is either sent to the correct application (locally), or forwarded to another host - or whatever happens to i + |
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+Shorewall is an open source firewall tool for Linux that builds upon the Netfilter (iptables/ipchains) system built into the Linux kernel, making it easier to manage more complex configuration schemes by providing a higher level of abstraction for describing rules using text files. + |
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+A virtual private network (VPN) extends a private network across a public network, and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network. + |
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SSH Tunneling, is the ability to use ssh to create a bi-directional encrypted network connection between machines over which data can be exchanged, typically TCP/IP. + |