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10.6. Summary

Linux and networking go hand in hand. The Linux kernel has support for all common and most uncommon network protocols. The standard UNIX networking tools are provided in each distribution. Next to those, most distributions offer tools for easy network installation and management.

Linux is well known as a stable platform for running various Internet services, the amount of Internet software is endless. Like UNIX, Linux can be just as well used and administered from a remote location, using one of several solutions for remote execution of programs.

We briefly touched the subject of security. Linux is an ideal firewall system, light and cheap, but can be used in several other network functions such as routers and proxy servers.

Increasing network security is mainly done by applying frequent updates and common sense.

Here is an overview of network related commands:

Table 10-2. New commands in chapter 10: Networking

Command Meaning
ftp Transfer files to another host (insecure).
host Get information about networked hosts.
ifconfig Display IP address information.
ip Display IP address information.
netstat Display routing information and network statistics.
ping Send answer requests to other hosts.
rdesktop Display and MS Windows desktop on your Linux system.
route Show routing information.
scp Secure copy files to and from other hosts.
sftp Secure FTP files to and from other hosts.
ssh Make an encrypted connection to another host.
ssh-keygen Generate authentication keys for Secure SHell.
telnet Make an insecure connection to another hosts.
tracepath/traceroute Print the route that packets follow to another host.
whois Get information abotu a domain name.
xclock X Window clock application, handy for testing remote display.
xhost X Window access control tool.
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