Linux Network Administrator's Guide

Format: Paperback

Language: English

Format: PDF / Kindle / ePub

Size: 5.68 MB

Downloadable formats: PDF

Similarly, creating a low-cost and stable Web server is one of the most common reasons individuals and organizations use Linux. The lines have the following syntax: If the volumename is omitted, the last portion of the pathname is used. Users can protect important or sensitive data or information that would be impossible or time consuming to recreate by storing it on an NFS mounted file system that is regularly backed up.

Pages: 512

Publisher: O'Reilly Media; 2 edition (July 6, 2000)

ISBN: 1565924002

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Oracle recommends setting the semopm to a value of no less than 100 epub. In Ubuntu you simply add the module name to the bottom of the file /etc/modules Special Edition Using Linux System Administration http://projectbaseline.org/books/special-edition-using-linux-system-administration. We can, essentially, add users to a group, give the group access to a directory, and set what permissions that group has to the directory download. But what about the plumbing in the bathroom down the hall? How high off the floor should your servers be to stay above the high-water mark should a pipe burst? N You have renovated a loft in an old mill building to house your new dot- com. Do the new office partition walls extend only up to them, or do the walls connect to the old original ceiling ref.: Guide to Linux Networking and download epub http://projectbaseline.org/books/guide-to-linux-networking-and-security? Class A addresses begin with 0xxx, or 1 to 126 decimal. Class B addresses begin with 10xx, or 128 to 191 decimal. Class C addresses begin with 110x, or 192 to 223 decimal. Class D addresses begin with 1110, or 224 to 239 decimal. Class E addresses begin with 1111, or 240 to 254 decimal pdf. In fact, if you select Gnome-RPM’s Web find button, it uses rpmfind to locate packages to install on your computer by searching the Internet using the rpmfind database Ubuntu 11.10 Desktop: read here projectbaseline.org. When the system is shut down, it enters runlevel 6 online. One of my articles wound up on Slashdot.org, Digg.com, NewsForge and other sites at the same time , e.g. UNIX and Linux System Administration Handbook, 4th Edition http://projectbaseline.org/books/unix-and-linux-system-administration-handbook-4-th-edition. Then test yourself with more than 600 questions in our online quiz Administration Linux à 200% : read epub 5starhandyman.com. The first group of configuration statements, listed in Table 13-2, control overall access to the FTP server and establish limits on what can be done, and how, once users have logged in to the FTP server. Permits the group with GID gid to access the FTP server; gid may be a single group name, a single numeric GID, or a range of GIDs (numeric values must be prefixed with %) Permits the user with UID uid to access the FTP server; uid may be a single user name, a single numeric UID, or a range of UIDs (numeric values must be prefixed with %) Identifies rootdir as the chrooted directory for anonymous FTP for class (all classes if class is omitted) Enables or disables users of type (one or more of real, guest, anonymous, or class=class) to change file modes (the default is yes for all users except anonymous) Defines a class of type users named class with source addresses addr; type is one or more of real, guest, or anonymous; addr may be a single IP or a range of addresses specified with address:netmask or address/netmask notation Enables access to anonymous FTP for one or more Disables access to anonymous FTP Enables or disables users of type (one or more of real, guest, anonymous, or class=class) to delete files (the default is yes for all users except anonymous) Denies access to the FTP server to connections from addr and display the message in file; addr may be a single IP, a range of addresses specified with address:netmask or address/netmask notation, or !nameserved to indicate sites lacking a working nameserver Denies the group with GID gid to access the FTP server; gid may be a single group name, a single numeric GID, or a range of GIDs (numeric values must be prefixed with %) Denies the user with UID uid to access the FTP server; uid may be a single user name, a single numeric UID, or a range of UIDs (numeric values must be prefixed with %) Displays the contents of file and denies access (unless override is specified) to the FTP server if forward and reverse DNS lookups do not match Displays the contents of file and denies access (unless override is specified) to the FTP server if the connection fails a reverse DNS lookup Continued Limits the number of connections from class users to n during the times times, displaying the message in file if the limit has been exceeded Permits n failed login attempts before closing the connection (default is 5) Enables or disables users of type (one or more of real, guest, anonymous, or class=class) to overwrite files (the default is yes for all users except anonymous) Specifies the type of password checking used with anonymous FTP and whether the policy is strictly enforced (enforce) or if only a warning is issued (warn); none disables password checking, trivial requires an @ in the password, and rfc822 forces an RFC822-compliant address Enables or disables users of type (one or more of real, guest, anonymous, or class=class) to rename files (the default is yes for all users except anonymous) Server times out after waiting secs seconds (default is 120) to establish an incoming connection Server times out after waiting secs seconds (default is 120) to establish an outgoing connection Server times out after waiting secs seconds (default is 1200) seconds for activity on the data connection Server times out after waiting secs seconds (default is 900) for another command Server times out after waiting secs seconds (default is 10) to complete user identification using the RFC931 IDENT protocol Enables or disables users of type (one or more of real, guest, anonymous, or class=class) to execute the umask command (the default is yes for all users except anonymous) As stated earlier, the stock FTP configuration created when you install the WUFTPD and anonftp packages is only a starting point that can and should be improved before opening your server up to the world ref.: Linux on HP Integrity Servers: download epub http://oihanarte.com/?ebooks/linux-on-hp-integrity-servers-a-system-administrators-guide.

The chapter’s final section identified potential security problems with NFS and suggested ways to mitigate the threat. A COMMON CHALLENGE facing administrators charged with maintaining a network of Linux machines is how to share information across the network while maintaining that information centrally online. Basic Administration will give you a broad overview of UNIX and Linux from a system administrator's point of view. By the end of the section, you'll be able to administer your own computer. Networking deals with all the protocols used on UNIX and Linux that help set up, extend and maintain networks and Internet-facing servers , e.g. Fedora 11 User Guide Fedora 11 User Guide. That’s not to say that Windows systems are in any way inferior to other Operating systems, perhaps they just haven’t perfected the technology yet, maybe the arrival of a new version of Windows will solve a lot of the problems encountered with previous attempts at a multi user networking system download. If -g is also specified, quotas for groups of which the user is a member are also displayed. -v includes in the report file systems on which no space is used or for which no quota has been set ref.: Programming Linux Hacker Tools Uncovered: Exploits, Backdoors, Scanners, Sniffers, Brute-Forcers, Rootkits (Uncovered series) Programming Linux Hacker Tools.

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After rebooting the machine, you are presented with the login screen Wicked Cool Shell Scripts: 101 Scripts for Linux, OS X, and UNIX Systems http://projectbaseline.org/books/wicked-cool-shell-scripts-101-scripts-for-linux-os-x-and-unix-systems. For example, the options -p and -P in the same command will have different meanings. Some example commands with options and arguments: For more information on specific options and arguments, refer to the manual page of the command in question , source: Web Programming in Python: Techniques for Integrating Linux, Apache, and MySQL http://projectbaseline.org/books/web-programming-in-python-techniques-for-integrating-linux-apache-and-my-sql. It usually boils down to these two things: #1) Respect the privacy of others. #2) Think before you type. Password: Changing password for user gnuuser New password: Retype new password: passwd: all authentication tokens updated successfully The next test demonstrates that members of the PWADMIN alias cannot change the root password: [marysue@localhost]$ sudo passwd root Sorry, user marysue is not allowed to execute ‘/usr/bin/passwd root’ as root on luther Pro Linux Embedded Systems 1st read for free read for free. The following known issue does not apply to this article since we applied the Oracle 10.2.0.3 patchset , e.g. Red Hat Linux Networking and System Administration by Terry Collings (2005-10-21) projectbaseline.org. See PAP printers client/server networking, 17 Microsoft Network, 213–214, 219–220 printing disk quota usage report, 481 Tripwire reports, 757 usernames, currently logged on, 723 priorities backups, setting, 633 process, modifying, 489–490 privileges. See permissions problems e-mail, 339 hardware, viewing interrupts, 86 performance, 552–553, 558 problems, file system avoiding checks at each reboot, 775 cannot delete, 772–773 commands with multi-word arguments, 773–774 floppy disks, 774 partition, mounting, 774–775 Windows file systems, accessing, 774 Zip drive, 775 problems, installation CD-ROM, unable to mount, 769 hardware-related, 769–772 IDE CD-ROM not detected, 769–770 IDE RAID (Redundant Array of Independent Disks) controller, unable to run, 769 laptop video problems, 771–772 log in, unable to, 768 memory or data bus hardware problems (fatal signal 11 and fatal signal 7), 772 sound, 770–771 Star Office, 768–769 proc virtual file system backups, 640 hardware, 86–88 software, 84–86 processes Bash input and output, 532–537 command line system configuration, 484–488, 491 CPU (central processing unit) usage, top running, 568–571 directory location, 73 files, viewing which held open, 77 hardware, 86–88 IDs, listing, 478, 480 priorities, modifying, 489–490 running, monitoring (ps command), 484, 485–486, 556–558 scripts, 538–543 software, 84–86 viewing, 471–472 processor The Linux Network with CDROM (The M&T Books Slackware Series) by Fred Butzen (1998-07-02) The Linux Network with CDROM (The M&T.

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Like Terry, I appreciate the work of Viktorie, Dennis, and Brandon in helping Terry and me complete this book when Terry became ill , cited: Linux Routers: A Primer For Network Administrators http://quartzrecordings.com/library/linux-routers-a-primer-for-network-administrators. In Fast Ethernet networks, there are two classes of repeaters. Class I repeaters have a latency of 0.7 microseconds or less and are limited to one repeater per network. Class II repeaters have a latency of 0.46 microseconds or less and are limited to two repeaters per network. The following are the distance (diameter) characteristics for these types of Fast Ethernet repeater combinations: When conditions require greater distances or an increase in the number of nodes/repeaters, then a bridge, router or switch can be used to connect multiple networks together Red Hat Enterprise Linux (RHEL) 7 Server Installation and Administration: Training Manual: Covering CentOS-7 Server, Cloud computing, Bind9 DNS Server and Fedora 23 Server http://projectbaseline.org/books/red-hat-enterprise-linux-rhel-7-server-installation-and-administration-training-manual-covering. The master contains all the information about the domain and supplies this information when requested. A master server is listed as an authoritative server when it contains the information you are seeking and it can provide that information. The slave is intended as a backup in case the master server goes down or is not available , cited: Mastering CentOS 7 Linux download for free http://projectbaseline.org/books/mastering-cent-os-7-linux-server. It is also the most lightweight e-mail program, making it ideal for running on very old computers Linux Mint 17: Desktops and Administration by Petersen, Richard (2014) Paperback http://ecofreshcarpets.com/books/linux-mint-17-desktops-and-administration-by-petersen-richard-2014-paperback. By default syslog doesn't expect to receive messages from remote clients , source: Linux Journal, Issue 56, December 1998: System Administration, Interview with Linus Torvalds (56) http://sc-recovery.ru/books/linux-journal-issue-56-december-1998-system-administration-interview-with-linus-torvalds-56. Newly installed applications are now highlighted in the menu download. Bash sports a surprisingly rich collection of input and output features. 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. Rather, it covers I/O redirection, using the echo command for output, and using the read command for input , cited: Cfengine 3 Beginner's Guide read here Cfengine 3 Beginner's Guide. You can also assign different locations to your computer, especially very useful if you are on a laptop and move between several networks each requiring different configurations. Just select the gray bar at the top of the network-admin window and select Create Location Building a Linux Internet Server read online. During these years I have acquired a very good knowledge of Antivirus technologies, DBA, system administration (Windows/Linux/Networks). My responsibility includes providing back end support for the distributed applications, FMS and guiding new trainees through their Jobs , e.g. Linux for Newbies - Become an Open-Source Computer Hero http://projectbaseline.org/books/linux-for-newbies-become-an-open-source-computer-hero. This allows you to create and edit disk quota for the users in your /home partition or directory. Each user is given a certain amount of disk space he can use. Going close to filling up the quota will generally send a warning. You can also edit other mounts such as the root directory "/" and also set a number of presented mount options: Editing the System Boot up, Adding and Removing Services All service related functions such as start, stop, restart, start on boot, disable on boot, start now and on boot, and disable now and on boot are available at the bottom of the screen Linux Mint 17: Desktops and Administration http://5starhandyman.com/ebooks/linux-mint-17-desktops-and-administration. If there are more than nine such parameters, you must use the ${} syntax, such as ${10}, to obtain their values. Positional parameters passed to a script are read-only, that is, you cannot change their values. In addition to the numerically named positional parameters, Bash recognizes three special ones, #, @, and *. # is the number of positional parameters passed to the script, not counting 0. * contains a list of all the positional parameters passed to a script, except 0, formatted as a string download.

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