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2 vol

3 Chap. 1 Twitter Pixiv *1 *2 *3 1.1 * JSON *5 JSON HTTP *6 JSON 1.1 JSON HTTP *1 Open Source INTelligence *2 IMagery INTelligence *3 SIGnals INTelligence *4 *5 JavaScript Object Notation JavaScript *6 HyperText Transfer Protocol HTTP/1.1 HTTP/2 1

Chap. 1 1.1 1.1 JSON HTTP HTTP TCP *7 1.

4 Chap JSON HTTP HTTP TCP *7 1.2 TCP IP 2 *7 Transmission Control Protocol UDP User Datagrap Protocol TCP 2

5 Chap

6 Chap FIN * tcpdump Ubuntu Windows Mac *9 Ubuntu tcpdump ip $ ip addr 3: wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP... link/ether 64:80:99:XX:XX:XX brd ff:ff:ff:ff:ff:ff inet /24 brd scope global dynamic wlp3s0 valid_lft 82707sec preferred_lft 82707sec inet6 fe80::6680:99ff:fexx:xxxx/64 scope link valid_lft forever preferred_lft forever ip wpl3s0 * 10 inet inet6 IP IPv4 IPv6 link/ether MAC tcpdump GAME START $ sudo tcpdump -i wlp3s0 -w sample1.pcap tcpdump: listening on wlp3s0, link-type EN10MB (Ethernet), capture size bytes -i -w * 11 *8 *9 *10 Ubuntu BIOS 4

7 Chap Ctrl-C tcpdump 9087 packets captured 9089 packets received by filter 0 packets dropped by kernel pcap sample1.pcap PCAP tcpdump $ tcpdump -c 3 -r sample1.pcap reading from file sample1.pcap, link-type EN10MB (Ethernet) 18:46: IP > example.com.https: Flags [FP.], seq : , ack , win 362, options [nop,nop,ts val ecr ], length :46: IP ssh > : Flags [P.], seq : , ack , win 1810, options [nop,nop,ts val ecr ], length :46: IP > ssh: Flags [.], ack 392, win 1436, options [nop,nop,ts val ecr ], length 0 -c 3 3 -r 1 1 > HTTPS SSH 80 $ tcpdump -c 3 -r sample1.pcap 'port 80' reading from file sample1.pcap, link-type EN10MB (Ethernet) 18:46: IP > http: Flags [F.], seq , ack , win 229, options [nop,nop,ts val ecr ], length 0 18:46: IP > http: Flags [F.], seq , ack , win 229, options [nop,nop,ts val ecr ], length 0 18:46: IP > http: Flags [F.], seq , ack , win 229, *11 5

8 Chap. 2 SSL ( Ubuntu Japanese Team ) Google Web HTTPS *1 Web SSL SSL SEO 1 VPN HTTPS 2.1 HTTPS? VPS Web Web VPS Web HTTPS HTTPS SSL 2.2? Web SSL X.509 HTTPS Web Web Web Web Web EV EV SSL *1 21

9 Chap. 2 SSL 2.3 SSL *2 2.3 SSL Web SSL SSL ( ) SSL ( EV ) SSL ( ) SSL ( ) StartCom The StartSSL Free (Class 1) * 3 EFF Linux Foundation Let's Encrypt *4 Amazon Web Services (ELB) CDN(CloudFront) AWS Certicate Manager * 5 StartSSL Class1 (StartCom Class 1 ) 1 Let's Encrypt ACME AWS ELB CloudFront SSL ACS(AWS Certicate Manager) CDN EC2 ELB CloudFront Web SSL : Let's Encrypt? Let's Encrypt (?) Let's Encrypt *6 *2 *3 *4 *5 *6 22

10 Chap. 2 SSL 2.4 https Ubuntu 2.4 https Ubuntu Ubuntu SSL Japanese Team Ubuntu Weekly Recipe 387 Ubuntu SSL *7 2048byte CSR openssl -sha256 SHA-2 SHA-1 *8 2.5 StartSSL SSL StartSSL SSL SSL StartsSSL whois webmaster@( ) SSL whois * StartSSL StartSSL StartSSL whois *7 *8 SSL HTTPS *9 Value-domain.com Web 23

11 Chap. 2 SSL 2.5 StartSSL SSL 2.1 StartSSL StartSSL SSL Web StartSSL Validation Wizard Domain Validation whois "webmaster@( )" Click to send validation code 24

12 Chap. 3 Xymon Maniax Hajime MIZUNO(@mizuno_as) 1 2! 3.1 Xymon BigBrother / Xymon Ubuntu Weekly Recipe 383 *1 Recipe Xymon Xymon Xymon 3.2 Recipe RAID Xymon /usr/lib/xymon/client/ext/ xymon-client 3.1 /usr/lib/xymon/client/ext/raid.sh 3.1: RAID *1 33

13 Chap. 3 Xymon Maniax 3.2 #!/bin/sh COLUMN=raid COLOR=green MSG="RAID Status" STATUS=$(/bin/cat /proc/mdstat) echo $STATUS /bin/grep -e '\[.*_.*\]' if [ $? -eq 0 ]; then COLOR=red MSG="${MSG} RAID is degraded! $STATUS " else MSG="${MSG} All is OK $STATUS " fi $BB $BBDISP "status $MACHINE.$COLUMN $COLOR `date` ${MSG} " exit 0 1. /proc/mdstat * BB *3 BB /usr/lib/xymon/client/bin/xymon *4 $ /usr/lib/xymon/client/bin/xymon Xymon version Usage: /usr/lib/xymon/client/bin/xymon [--debug] [--merge] [--proxy= RECIPIENT DATA RECIPIENT: IP-address, hostname or URL DATA: Message to send, or "-" to read from stdin xymon Xymon IP *2 *3 BigBrother *4 BB /usr/lib/xymon/client/etc/xymonclient.cfg 34

14 Chap. 3 Xymon Maniax 3.2 BBDISP Xymon IP /var/run/xymon/bbdisp-runtime.cfg Xymon xymon man XYMON MESSAGE SYNTAX status status : status status[+lifetime][/group:group] HOSTNAME.TESTNAME COLOR <additional text> status ( ).( ) MACHINE *5 COLUMN *6 COLOR "red" "yellow" "green" "clear" green red Xymon Web /proc/mdstat Xymon /usr/lib/xymon/client/etc/clientlaunch.cfg : clientlaunch.cfg [raid] ENVFILE $XYMONCLIENTHOME/etc/xymonclient.cfg CMD $XYMONCLIENTHOME/ext/raid.sh LOGFILE $XYMONCLIENTHOME/logs/raid.log INTERVAL 5m ENVFILE BB BBDISP $XYMONCLIENTHOME/etc/xymonclient.cfg *7 CMD raid.sh LOGFILE $XYMONCLIENTHOME/logs /var/log/xymon INTERVAL Xymon CPU DISK RAID Xymon RAID HTTP SSH hosts.cfg *8 *5 MACHINE BB BBDISP /etc/init.d Xymon Upstream uname -n sed -e 's/./,/g' Debian/Ubuntu /etc/default/xymon-client CLIENTHOSTNAME *6 COLUMN *7 XYMONCLIENTHOME xymonclient.cfg *8 cpu disk memory 35

Chap. 3 Xymon Maniax 3.3 3.1 RAID RAID 3.2 3.3 Xymon hosts.

15 Chap. 3 Xymon Maniax RAID RAID Xymon hosts.cfg cpu disk memory les ports procs (clear) analysis.cfg Xymon : 36

16 Chap. 4 Ubuntu Evernote Rakugou Evernote *1 Ubuntu 4.1 Evernote Ubuntu Ubuntu Evernote Ubuntu Ubuntu Evernote Ubuntu Evernote * 2 * Everpad Ubuntu Magagine Japan Vol.10 PPA Launchpad ( Launchpad ) LTS *1 *2 Evernote Evernote Linux ( ) Linux *3 Ubuntu 44

17 Chap. 4 Ubuntu Evernote 4.2 $ sudo add-apt-repository ppa:nvbn-rm/ppa $ sudo apt-get update $ sudo apt-get install everpad : Everpad VirtualBox Create Note * Neighbornote Neighbornote *5 Nixnote Evernote Java OpenSSL *4 Let's note Vol *5 45

18 Chap. 4 Ubuntu Evernote 4.2 $ sudo apt-get install libssl-dev openjdk-7-jre *6 64bit x64 zip $ cd ~/ $ chmod +rw neighbornote linux-x64-installer.run $./neighbornote linux-x64-installer.run Neighbornote : neighbornote Nixnote *6 46

19 Chap. 4 Ubuntu Evernote 4.2 : 47

20 Chap Ubuntu GNOME (vol.3 ) PC HDD OS Ubuntu GNOME LTS HDD dd OS Ubuntu GNOME Ubuntu Weekly Recipe 396 Ubuntu GNOME iso USB Ubuntu usb-creator Windows Universal USB Installer *1 HDD dd *2 PC UEFI UEFI /home/ikuya /var/vm rsync VirualBox /var/vm /home/ikuya /var/vm *1 Wine USB *2 HDD HDD HDD HDD dd HDD HDD HDD GParted HDD 56

21 Chap Ubuntu GNOME vim vlc ssh lv chromium-browser shotwell byobu git vinagre gimp virtualbox virtualbox-guest-additions-iso owncloud-client clipit bijiben asunder light-themes easytag gedit-plugins epiphany-browser fonts-ipafont subversion imagemagick samba retext Mozc *3 Atom Pandoc Pandoc Atom SoftEther-VPN systemd github.com/ikunya/softethervpn /etc/ /etc/ HDD /etc/ tar HDD samba ssh /etc/prole.d/unzip-default-charset.sh /etc/udev/rules.d/99-udisks2.rules unzip /media/( )/(UUID ) /media/(uuid ) Ubuntu Japanese Team PPA unzip $ cat /etc/udev/rules.d/99-udisks2.rules ENV{ID_FS_USAGE\}=="filesystem", ENV{UDISKS_FILESYSTEM_SHARED\}="1" GNOME Shell "Dash to Dock" "topicons" 2 Weather " (gnome-weather)" Tweak Tool [ ] [GTK+] [Ambiance] [ ] [Human-Dark] Ambiance light-themes Ubuntu Ubuntu GNOME Ubuntu *3 Mozc vol.3 57

22 2 Windows

23 Ubuntu LTS 68

I TCP 1/2 1

I TCP 1/2 1 Transport layer: a birds-eye view Hosts maintain state for each transport endpoint Routers don t maintain perhost state H R R R R H Transport IP IP IP IP IP Copyright(C)2011 Youki Kadobayashi.