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## ESC should be used only when the escape character is required, such as in an echo command. It cannot be used to send a literal escape character or other special characters such as newline or tab. When you want to display a backslash (\\) in your text, you need to enter two backslashes (\\\\). ESC CANNOT BE USED TO SEND A LITERAL ESCAPE CHARACTER. ONLY USE ESC FOR AN ACTUAL ESCAPE COMMAND WHEN YOU NEED ONE. DO NOT USE IT AS AN ALTERNATIVE TO THE LITERAL CHARACTER IN YOUR TEXT!-quote from http://www.tldp. org/LDP/Linux-Dictionary/html/index.html -group -group= Chapter 4: Networking and Sharing. Linux is quite flexible when it comes to configuration and security of the network. This is done by using different methods of adjusting settings such as firewall, network address translation (NAT), and routing tables. When a computer needs to communicate on a local network, it does this through some type of switching known as Network Address Translation (NAT). The simple way for a computer to communicate with other computers on a LAN is through some type of assigned networking assigned address, such as an IP address. However, when it comes to Internet communications, this is all that is available. Linux administrators need to configure the computer in order for it to communicate with different networks, such as Wireless LANs or IPX. Computers need a way to communicate with other computers on the network in order for them to connect with the Internet. This is done through Network Address Translation (NAT), which allows for multiple clients to share one address. You can configure Linux in two different ways in order for it to be able to communicate with the network through NAT. The first option is when you have one interface acting as a gateway. There are some drawbacks to this, one being if your internal network is hosting multiple subnets. Each subnet will require its own gateway interface for interaction with the outside network. The second option is when you have multiple interfaces on the same NIC, but they are all directly connected to different networks. Sometimes you may not want this configuration setup unless there are multiple private networks that connect on the outside of your LAN. To configure Linux in NAT mode, two options are available. One method involves binding an IP address on the LAN interface that uses NAT to a different IP address on the WAN interface using iptables rules. There is always a default gateway configured if different devices have different local IP addresses. If the internal and external networks were on the same local network, no configuration is required. Another way is to set up routing so packets will route properly. [SELECTED = [3]] for this section ## 1. Click Start, and in the search box type cmd, and then click cmd.exe at the top of the results list. Click Yes when asked if you want to run it anyway. A command prompt window appears with administrator rights (elevated privilege) and a blinking cursor next to C:\\>. Each folder in C:\\> represents a different disk drive or partition that can be accessed (see Figure 1-2).2. cfa1e77820
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