Red Hat Linux Networking , System Administration (P15) ppsx

... backhoe, say ), access to that time server will be impaired. NTP is engineered to select an alternative server, but if all your servers use that same severed backbone, you’re hosed. So, for example, ... (ntpq, ntpdc, ntpdate, ntptrace, tickadj, ntptime, ntiptime, ntp-kegen, and ntpdsim ), and the all-important configuration file, /etc/ntp.conf. The NTP daemon is dual-purpose. It acts as...

Ngày tải lên: 07/07/2014, 09:20

... configuration files, documentation, and binary files for the Perl programming language come in a Red Hat package. You use a special program called Red Hat Package Manager (RPM) to install, uninstall, and ... set of packages that Red Hat recommends for instal- lation for the class of installation (Personal Desktop, Workstation, Server, or Custom) you have chosen. You can, however,...

Ngày tải lên: 07/07/2014, 09:20

... Figure 8- 2, you can see that the first few services start in this order: kudzu, reconfig, iptables, and network. That is so because their scripts are named S05kudzu, S06cpuspeed, S08iptables, and ... GPG keys for Red Hat Net- work. No files in this directory should be edited by hand. For more informa- tion on Red Hat Network, see the Red Hat Network Web site at https:// rhn.re...

Ngày tải lên: 07/07/2014, 09:20

... or Enterprise Linux system. First, you can use the X Configuration tool, which is a graphical tool that gives you the ability to change some of the most significant settings, such as display, monitor, and ... usually does a good job of detecting the system mouse, keyboard, video card, and monitor. When you log in to your system, the settings are generally what they should be for a func-...

Ngày tải lên: 07/07/2014, 09:20

... on /projects type autofs (rw,fd=4,pgrp=11081,minproto=2,maxproto=4) # mount -t nfs diskbeast:/proj on /projects/code type nfs (rw,soft,rsize=8192,wsize=8192,nfsvers=2,addr=192.168.0.1) Using mount’s ... your system, particularly the portmapper, which has long been a target of exploit attempts. Similarly, you should add entries in /etc/hosts.deny lockd, statd, mountd, and rquotad. More genera...

Ngày tải lên: 07/07/2014, 09:20

... RPC call ), such as getattr, read, or write, the number of such operations performed, and the distribution of each operation. For example, 1 0,8 61 getattr operations have been performed, which represents ... SMTP, HTTP, ICMP, ARP, DNS, SSH, scp, sftp, and others. The significance of TCP/IP as the basis for these services cannot be over- looked. TCP/IP provides a platform- and operating...

Ngày tải lên: 07/07/2014, 09:20

... number of blocks read is 4,0 0 1,6 4 3, which totals 2,0 4 8,8 4 1,2 16 bytes or about 1.9 GB. ■■ The total number of blocks written is 3,4 2 3,9 8 1, which totals 1,7 5 3,0 7 8,2 72 bytes or about 1.6 GB. Performance ... display unit, which defaults to bytes, use -S k for units of 1000 bytes, -S K for true kilobytes (1024 bytes ), -S m for units of 1,0 0 0,0...

Ngày tải lên: 07/07/2014, 09:20

... as follows: SELINUXTYPE=targeted 2. While editing /etc/selinux/config, make certain that the SELINUX variable is set to permissive, that is: SELINUX=permissive This line starts SELinux with the ... the major Linux distributions, including Fedora Core, RHEL, SUSE Linux (now known as Novell Enterprise Desktop ), Debian, and a version of Gentoo Linux known as Hardened Gentoo). NOTE SELi...

Ngày tải lên: 07/07/2014, 09:20

... covered is the Red Hat Network, a subscription service available with Red Hat Enterprise Linux that you can use to keep your system current. You can register your systems with Red Hat and then ... for the following books: KDE Bible, The Samba Book, Unix Weekend Crash Course, Red Hat Linux 9 For Dummies, Solaris 9 For Dummies, Fedora Linux 2 For Dummies, and Linux Tim...

Ngày tải lên: 07/07/2014, 09:20

... decided, also, to assume the con- trol that Linux offers, and the responsibilities that this entails. By its very nature as a modern, multiuser operating system, Linux requires a degree of administration ... is. Summary As you, the system administrator, read this book, bear in mind that your tasks are ongoing and that there is never a machine that is completely tuned, entirely up to...

Ngày tải lên: 07/07/2014, 09:20