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2.3 # chkconfig network on # chkconfig --list network network 0:off 1:off 2:on 3:on 4:on 5:on 6:off 2.3 <strong>Linux</strong> 2.3.1 /etc/sysconfig/network /etc/sysconfig/network # cat /etc/sysconfig/network NETWORKING=yes HOSTNAME=server.example.com NTPSERVERARGS=iburst HOSTNAME 2.3.2 /etc/hosts /etc/hosts IP # cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.0.10 server.example.com server 192.168.0.101 client.example.com client 2.3.3 DNS /etc/resolv.conf /etc/resolv.conf DNS DNS DNS DNS DNS DNS www.lpi.or.jp 52 (C) LPI-Japan
2 # cat /etc/resolv.conf # Generated by NetworkManager search example.com nameserver 192.168.0.1 /etc/resolv.conf /etc/resolv.conf DNS NetworkManager network DHCP /etc/resolv.conf /etc/resolv.conf /etc/resolv.conf DNS /etc/resolv.conf /etc/sysconfig/network-scripts/ifcfg-eth0 DNS1 DNS DNS2 DNS DNS1=192.168.0.1 DNS2=192.168.0.2 NetworkManager network /etc/resolv.conf 2.3.4 /etc/nsswitch.conf /etc/nsswitch.conf /etc/hosts DNS NIS # cat /etc/nsswitch.conf #hosts: db files nisplus nis dns hosts: files dns filesdns /etc/hosts DNS www.lpi.or.jp 53 (C) LPI-Japan
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Linux LPI-Japan 2015-04-16
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7 Linux Linux Linux OS Red
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LPIC Linux Web 1 1 W
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sato • 1 • 2 • 3
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i . . . . . . . . . . . . . . . .
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2.2 network NetworkManager . . . .
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4.1.10 umask . . . . . . . . . . .
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6.3.1 . . . . . . . . . . . . . .
Page 20 and 21: 1.1 fined_r:unconfined_t:s0-s0:c0.
Page 22 and 23: 1.1 # passwd suzuki suzuki : su
Page 24 and 25: 1.2 1.2.1 1 () # id suzuki ui
Page 26 and 27: 1.2 # id suzuki uid=501(suzuki) gi
Page 28 and 29: 1.3 $ ll 0 -rw-rw-r--. 1 suzuki s
Page 30 and 31: 1.3 $ chmod u-x testdir $ ls -l
Page 32 and 33: 1.3 Account expires : never Minimu
Page 34 and 35: 1.3 drwx------. 26 sato sato 4096
Page 36 and 37: 1.4 SSH 1.4.2 SSH CentOS OpenSSH
Page 38 and 39: 1.4 SSH RX packets:19972 errors:0
Page 40 and 41: 1.4 SSH 1.4.8 SSH SSH Linux ssh-
Page 42 and 43: 1.4 SSH ~/.ssh id_rsa.pub id_r
Page 44 and 45: 1.4 SSH authorized_keys SELinux
Page 46 and 47: 1.4 SSH [sshuser@client ~]$ ssh ss
Page 48 and 49: 1.4 SSH 1.1 IP IP SSH OK 2.
Page 50 and 51: 1.4 SSH 1.4 1.4.15 Tera Term T
Page 52 and 53: 1.4 SSH 1.7 From: TeraTerm SSH SC
Page 54 and 55: 1.5 root OpenSSH /etc/ssh/sshd_con
Page 56 and 57: 1.5 root 1.5.3 su su root root
Page 58 and 59: 1.5 root #2) Think before you type
Page 60 and 61: 1.5 root 28608 pts/0 S 0:00 su - h
Page 62 and 63: 2.1 TX packets:45 errors:0 dropped
Page 64 and 65: 2.1 ARP ARP ip neighbor show ar
Page 66 and 67: 2.1 udp 0 0 0.0.0.0:111 0.0.0.0:
Page 68 and 69: 2.1 Transceiver: internal Auto-neg
Page 72 and 73: 2.3 2.3.5 /etc/services /etc/ser
Page 74 and 75: 2.4 iptables NAPT(IP ) IP 1 IP
Page 76 and 77: 2.4 iptables INPUT OUTPUT FORWARD
Page 78 and 79: 2.4 iptables # system-config-firew
Page 80 and 81: 2.5 DHCP 5. system-config-firewa
Page 82 and 83: 2.5 DHCP range 192.168.0.200 192.1
Page 84 and 85: 2.5 DHCP 2.5.8 Windows DHCP Wind
Page 86 and 87: 2.5 DHCP 2.7 TCP/IPv4 4 (TCP/IP
Page 88 and 89: 2.5 DHCP 2.10 IP IP DNS 2.5.9
Page 91 and 92: 3 3.1 OS OS 1. 2. BIOS 3. GRU
Page 93 and 94: 3 timeout=5 splashimage=(hd0,0)/g
Page 95 and 96: 3 ..- 2.6.32-504.el6.x86_64 3
Page 97 and 98: 3 0 1 2 3 4 5 6 0 0 #
Page 99 and 100: 3 3.1.6 runlevel # runlevel N
Page 101 and 102: 3 httpd : [ OK ] httpd # servic
Page 103 and 104: 3 5 rc5.d # ls /etc/rc.d init
Page 105 and 106: 3 3.3 cron Linux cron 3.3.1 c
Page 107 and 108: 3 0-59 0-23 1-31 1-12 0-70
Page 109 and 110: 3 3.3.7 cron crontab -r cron #
Page 111 and 112: 3 # ls /etc/cron.hourly/ 0anacron
Page 113 and 114: 3 #period in days delay in minute
Page 115 and 116: 3 # ntpq -p remote refid st t whe
Page 117: 3 3.4.6 NTP NTP NTP NTP /etc/
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4.1 # id sato uid=500(sato) gid=50
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4.1 [sato@server ~]$ umask 0002 um
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4.1 /etc/profile # cat /etc/bashr
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4.1 [sato@server ~]$ write suzuki
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4.2 POSIX ACL 4.2.2 ACL ACL getfa
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4.2 POSIX ACL # yum install samba S
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4.2 POSIX ACL 4.2 3. 4.3 sato
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4.2 POSIX ACL Windows samba_acl_te
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4.3 SELinux 4.3 SELinux SELinux Li
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4.3 SELinux /etc/selinux/config SE
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4.3 SELinux 4.3.7 Boolean SELinux
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4.3 SELinux 4.8 Forbidden root /va
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4.4 LVM PV PV 8E Linux /dev/sd
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4.4 LVM lvcreate lvcreate -L -n
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4.4 LVM # df /mnt/LVMtest/ Filesys
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4.5 4.5 4.5.1 CD DVD
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4.5 4.5.5 tar Tape Archiver tar
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4.5 # dd if=/dev/sdb of=/dev/sdc 2
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4.5 -0 0 0 -u /etc/dumpdates
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4.5 efi symvers-2.6.32-504.el6.x86
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5 5.1 Linux Linux Linux 1
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5 enabled 0 yum --enablerepo
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5 ∗ base: ftp.nara.wide.ad.jp
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5 5.1.5 yum Locale LANG yum gro
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5 # ln -s /media/CentOS_6.6_Final
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5 PID USER PR NI VIRT RES SHR S %
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5 5.2.3 vmstat vmstat CPU vmst
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5 # iostat Linux 2.6.32-504.el6.x
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5 dm-0 0.00 0.00 1.17 5.33 41.92
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5 # sar -f /var/log/sa/sa22 Linux
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5 Detail Low0Med5High10 Service
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5 # logwatch --print ############
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6 6.1 OS 6.1.1 CentOS /var/
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6 syslogd 6.1.5 syslog facil
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6 6.1.7 - Y * @ IP UDP
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6 -A INPUT -j REJECT --reject-wit
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6 $ModLoad TCP $InputTCPServerRu
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6 syslogrsyslog ```shell-session
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6 extension .baksome.log some.
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6 prerotate firstaction postrot
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6 • netstat • tcpdump • Wir
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6 6.2.4 tcpdump GUI Wiresh
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6 Wireshark Network Analyzer # wi
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6 6.3 http Filter:httpEnter Hy
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6 1. CentOS DVD BIOS DVD 2. R
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6 6.8 4. /mnt/sysimage Read-On
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6 6.11 shell 7. bash /mnt/sysim
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7 CentOS 7 7.1 CentOS 7 CentOS
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7 CentOS 7 systemctl status sys
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7 CentOS 7 7.2.4 systemctl list-
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7 CentOS 7 7.2.8 systemctl enabl
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7 CentOS 7 2. /etc/systemd/system
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7 CentOS 7 1 28 17:29:04 centos7.
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7 CentOS 7 sources: services: dhc
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7 CentOS 7 7.1 GUI NetworkManag
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Linux 2015 4 16 v1.0.0 LPI-Ja
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