The Definitive Guide to CentOS (Books for Professionals by

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Language: English

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Token Ring is used as an alternative to Ethernet in some LAN environments, and offers the same sorts of advantages as FDDI in terms of achieving full wire speed, but at lower speeds (4 Mbps or 16 Mbps), and lower cost because it is based on wire rather than fiber. This step is usually done when you install Linux. 3. If you’re not using a server application, don’t run it. Chapter 9 explains how to use Samba to access Windows file systems.

Pages: 352

Publisher: Apress; 2009 edition (July 8, 2009)

ISBN: 1430219300

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Label the floppy as a boot disk, and save it in a safe place in case you need it in the future. Then click the Exit button to reboot your PC. When it finishes rebooting, you should get the Red Hat Linux graphical login screen if you chose this option, otherwise, you see the terminal login prompt. Using KickStart As a system administrator, one of your jobs is installing and configuring Red Hat on server and client computers Mastering Puppet Many of them, such as manipulating file descriptors or reading and writing to device files, are esoteric and most useful to low-level system programmers and will not be covered in this section download. With such an arrangement, you can still have your own domain and still have your own local mail server, with mail downloaded from your hosting company. (Your own SMTP mail server for outgoing mail can remain on a local machine.) For many smaller companies, the cost is more than covered by the ability to use a low cost cable or DSL service whose terms of use prohibit Web and FTP servers, meaning that you can gain an extra level of professional service at no cost — quite a bargain epub. This address is used when a machine wants to make a TCP/IP connection to itself. It uses the lo device as its interface, which prevents loopback connections from using the Ethernet (via the eth0 interface). In this way, network bandwidth is not wasted when a machine wishes to talk to itself. The last entry in the routing table is for the IP address, which is the eggplant host's own address LINUX SYSTEM SECURITY: THE ADMINISTRATORS GUIDE TO OPEN SOURCE SECURITY TOOLS (PRENTICE HALL SERIES IN COMPUTER NETWORKING AND DISTRIBUTED) read here. The possible files for this option are enumerated and explained in the preceding table. This option specifies that the given file should be used as the backup device and that the device can be considered to be a rewinding device Learn Git in a Month of read for free If you must miss a class, you should then contact another student and request they take class notes for you. (Note, Hawknet has Hawkmail365 email for HCC students.) Credit for class participation includes attendance, preparedness, and adding to class discussions by asking questions and participating in discussions. Playing computer games, surfing the Internet, or working on assignments for this or other classes during class time will lose you credit ref.: Linux Operations and Administration by Alfred Basta (2012-08-14)

Linux support for JFS was written by IBM. IBM has contributed quite a bit of code to the Linux cause, and is a staunch supporter of Linux Linux Network Servers (Craig Hunt Linux Library) read pdf. The current stable version is 6.6, and the beta version is 7.0. You may install and use the open source community version for free, or purchase various support options Linux Server Security: Hack and Defend When a file system subdirectory is exported but its parent directory is not, the NFS server must verify that the accessed file resides in the exported portion of the file system, a check that is programmatically nontrivial. To facilitate this verification, called a subtree check, the server stores file location information in the file handle given to clients when they request a file Linux System Administration François-René Rideau, author of the Linux Firewall Piercing mini-HOWTO ( mini/Firewall-Piercing.html): “...the moral is: a firewall cannot protect a network against its own internal users, and should not even try to. “When an internal user asks your system administrator to open an outbound port to an external machine, or an inbound port to an internal machine, then you should do it for him.. . FreeBSD Mastery: Storage Essentials (IT Mastery Book 4) download here.

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For more about Nmap, go to SAINT is an acronym for Security Administrator’s Integrated Network Tool LPI Linux Certification in a Nutshell (In a Nutshell (O'Reilly)) LPI Linux Certification in a Nutshell. The /etc/services file is a good reference for looking up what ports important network services run on epub. Troubleshooting If you have difficulty installing or using any of the materials on the companion CD, try the following solutions: N Turn off any antivirus software that you may have running , e.g. Ubuntu 11.04 Desktop: download epub NOTICE this is only ONE of several Linux command lists. Also read our Beginner Linux commands and commands for files and directories: You may also benefit from more basic commands such as: beginner commands, more advanced commands, and file permissions. Please consider running these administrator commands on occasion with the --help parameter to read through all of their options , source: The Definitive Guide to CentOS (Books for Professionals by Professionals) The following command creates a new group named admins: # groupadd admins Here is the resulting entry created in /etc/group: As this point, admins has no members and the password field has an x in it, meaning that no nonmembers (which is everyone at this point) except root can join the group using newgrp Ubuntu 12.10 Server: Administration and Reference Reverse lookup enables you to enter the IP number and obtain the name. Next, you look at these files more closely , cited: Linux Utilities Cookbook read here Testing, obviously, makes sure that the naming convention and mounting scheme works as designed and identifies potential performance bottlenecks. Monitoring, finally, extends the testing process: you need to ensure that exported file systems continue to be available and that heavy usage or a poorly conceived export scheme does not adversely affect overall performance ref.: Collection Series of Linux: Linux system administration and network management (2nd Edition) (DVD-ROM discs attached)(Chinese Edition) download pdf. It might be 3, but if an X display manager is in use, it very well could be 5. Use the run level command as shown in the following example: $ runlevel N 3 runlevel returns the previous and current run levels. In cases in which there is no previous run level, run level displays an N, as shown in the example. chkconfig has several modes of operation; the listing mode demonstrated just now is only one of them , source: Fedora 11 Security Guide read online

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Node D updates its own Contact record for Node D with graph signature of 1 and floods the updated Contact record for Node D with graph signature of 1 to Node E and Node F. Then, Node D floods the new Contact record for Node A with graph signature of 1 Ansible for DevOps: Server and configuration management for humans Ansible for DevOps: Server and. When you do so, the text appears in the Mount Point field , e.g. By Chuck Easttom - Linux download online By Chuck Easttom - Linux Networking:. The "lo" is the "loopback only" interface which should be always active. Use the options (see ifconfig --help) to configure the interfaces. (/sbin/ifup to it run as a user) Startup a network interface Instant PostgreSQL Backup and Restore How-to Dennis Ritchie, one of the creators of Unix, writes of it: “Sometimes we sent printer output or batch jobs to the GCOS machine. The gcos field in the password file was a place to stash the information for the $IDENT card. Not elegant.” In addition to storing the encrypted password, /etc/shadow stores password expiration information The UNIX operating System: The Tutorial The UNIX operating System: The Tutorial. Read More, browsing through photos 8 Picasa Alternatives Made for Linux 8 Picasa Alternatives Made for Linux You may have heard that Google is closing Picasa, but of course, Google stopped supporting the Linux port of Picasa years ago, so we've plenty of great alternatives already available , cited: Ubuntu Linux System Administration by Ronald McCarty (2011-03-03)! By default, symlinks does not show relative links; -v overrides this default. To make an existing file system available, it has to be mounted using the mount command. mount’s syntax is: mount -a [-fFnrsvw] [-t fstype] mount [-fnrsvw] [-o fsoptions] device Two important commands to remember are put to move a file from your machine to the remote machine, and get to pull a file from the remote server to your machine Teach Yourself Linux read here read here. By default, many applications will send error reports, usage statistics, or log file summaries to the root account. This makes sense only if you log in as root frequently; a much better idea is to forward root's mail to your personal account by setting up a mail alias as described in Chapter 19, However carefully you have configured your site, Murphy's law guarantees that some problem will surface eventually , e.g. Ubuntu 12.04 Sever: Administration and Reference Once you become comfortable with the crontab format, you might find it most convenient to use crontab’s interactive mode. The interactive mode uses the vi editor, so use vi keystrokes to enter, edit, save your changes, and, of course, to exit the interactive mode. Naturally, you write a script using your preferred editor. If it is a complex script, you might find it easiest to write a bit at a time, breaking the script into small functional units that are easiest to test and debug , e.g. BackTrack 5 Wireless Penetration Testing Beginner's Guide of Ramachandran, Vivek on 09 September 2011 Notice that the account has been disabled (the first! in the password field) and that no password has been set, as indicated by the second! in the password field. Bear in mind, too, that the entry in the group file represents the user private group created for joebob. Red Hat has modified the standard useradd command to support its UPG scheme. The next command uses some of useradd’s command line options to override the default values: -c “Mary Sue” sets the comment (or GECOS) field to Mary Sue; -e 2001-09-30 sets the account’s expiration date; -f 3 disables the account three days after the password expires (if it is not changed); and -n disables the UPG scheme [(Linux Thin Client Networks read for free

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