[B! linux][network] hogemã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

hogem id:hogem

linuxã¨networkã«é–¢ã™ã‚‹hogemã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (40)

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CentOS 6.4 ã§ Linux Network Namespace (netns) ã‚’ä½¿ã†
Linux ãƒ‡ã‚£ã‚¹ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã§ã¯æ¯”è¼ƒçš„ CentOS ã‚’ä½¿ã†ã“ã¨ãŒå¤šã„ã‚“ã ã‘ã©ã€æ®‹å¿µãªã“ã¨ã«ãƒãƒ¼ã‚¸ãƒ§ãƒ³ 6.4 ã§ã¯ã¾ã Linux Network Namespace (netns) ãŒä½¿ãˆãªã„ã€‚ ã©ã†ã‚„ã‚‰ Linux ã‚«ãƒ¼ãƒãƒ«ã¨ iproute2 ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ãŒè¶³ã‚Šã¦ãªã„ã‚‰ã—ã„ã€‚ $ ip netns list Object "netns" is unknown, try "ip help". $ uname -r 2.6.32-358.14.1.el6.x86_64 $ rpm -qf `which ip` iproute-2.6.32-23.el6.x86_64 ã˜ã‚ƒã‚ã©ã†ã™ã‚‹ã‹ã£ã¦ã„ã†ã¨ RedHat ãŒå‡ºã—ã¦ã„ã‚‹ OpenStack ãƒ‡ã‚£ã‚¹ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã® RDO ã‚’ä½¿ã†ã€‚ OpenStack ã§ã¯ netns ã‚’ã‚¬ãƒ³ã‚¬ãƒ³ä½¿ã£ã¦ã‚‹ã®ã§ RDO ã¯ãã‚Œã«å¯¾å¿œã™ã‚‹ãŸã‚ã«å°‚ç”¨
hogem 2014/02/01
iproute / ip netns

linux

network
ãƒªãƒ³ã‚¯
CentOS 6.2 ã§ RPS/RFS ã‚’ä½¿ã£ã¦ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®å‰²ã‚Šè¾¼ã¿å‡¦ç†ã‚’è¤‡æ•°ã‚³ã‚¢ã«åˆ†æ•£ã—ã¦ã¿ãŸ - blog.nomadscafe.jp
ä»¥å‰(2010å¹´)ã«ã€Œã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãŒãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã§ã‚‚ãƒžãƒ«ãƒã‚³ã‚¢CPUã‚’æ´»ã‹ã›ãªã„ä»¶ã€ã¨ã„ã†ã‚¨ãƒ³ãƒˆãƒªã«ã¦CPUã®ã‚³ã‚¢ãŒå¢—ãˆã¦ã‚‚å‰²ã‚Šè¾¼ã¿å‡¦ç†ãŒåˆ†æ•£ã•ã‚Œãªã„ã®ã§ã‚¹ã‚±ãƒ¼ãƒ«ã•ã‚Œãªã„ã¨æ›¸ã„ãŸã‘ã©ã€ãã®å¾ŒLinux Kernelã«RPS/RFSãªã‚‹æ©Ÿèƒ½ãŒè¿½åŠ ã•ã‚Œã€å‰²ã‚Šè¾¼ã¿å‡¦ç†ãŒåˆ†æ•£ã§ãã‚‹ã‚ˆã†ã«ãªã‚Šã€CentOS 6.2 ã§ã‚‚ä½¿ãˆã‚‹ã‚‰ã—ã„ã®ã§è©¦ã—ã¦ã¿ã¾ã—ãŸã€‚ RPS/RFSã«ã¤ã„ã¦ã®ç´¹ä»‹ã¯ VIOPS06ã§ã€ŒRPSãƒ»RFSç‰æœ€æ–°Linux Kerneläº‹ä¾‹ã€ã¨é¡Œã—ã¦ãŠè©±ã—ã¦ãã¾ã—ãŸ http://d.hatena.ne.jp/syuu1228/20110722/1311322653 Linuxå†…æ ¸ RPS/RFSåŠŸèƒ½è¯¦ç»†æµ‹è¯•åˆ†æž http://www.igigo.net/archives/204 ãŒè©³ã—ã„ã€‚2ç•ªç›®ã®ã¯ã»ã¼èªã‚ãªã„ã‘ã©ã€æ€§èƒ½æ¯”è¼ƒã®ã‚°ãƒ©ãƒ•ãŒåˆ†ã‹ã‚Šã‚„ã™ã„ã€‚ ä»Šå›žè©¦ã—ãŸã‚µãƒ¼ãƒã¯ã€ OS: C
hogem 2014/01/14
linux

network
ãƒªãƒ³ã‚¯
ifconfig vs ip: comparing the two network configuration commands
ifconfig vs ipThe command /bin/ip has been around for some time now. But people continue using the older command /sbin/ifconfig. Let's be clear: ifconfig will not go away any time soon, but its newer version, ip, is more powerful and will eventually replace it. The man page of ip may look intimidating at first, but once you get familiar with the command syntax, it is an easy read. This page will n
hogem 2012/08/08
linux

network
ãƒªãƒ³ã‚¯
vnStat - a network traffic monitor for Linux and BSD
Since vnStat doesn't have/need a fancy GUI, all 'screenshots' are console captures. Examples of the image output can be found from the cgi demo page. $ vnstat --help vnStat 2.12 by Teemu Toivola -5, --fiveminutes [limit] show 5 minutes -h, --hours [limit] show hours -hg, --hoursgraph show hours graph -d, --days [limit] show days -m, --months [limit] show months -y, --years [limit] show years -t, -
hogem 2012/08/08
ã“ã‚Œè‰¯ã•ãã† / "vnStat is a console-based network traffic monitor for Linux and BSD"

linux

network
ãƒªãƒ³ã‚¯
RedHat Linux æŠ€è¡“çš„ãªè³ªå•(Part2) FAQ
Red Hat Insights Increase visibility into IT operations to detect and resolve technical issues before they impact your business. Learn More Go to Insights Red Hat Product Security Center Engage with our Red Hat Product Security team, access security updates, and ensure your environments are not exposed to any known security vulnerabilities. Product Security Center
hogem 2012/04/13
bonding ã®ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿

linux

network
ãƒªãƒ³ã‚¯
Linuxã®bonding(802.3ad)ã§ç™ºç”Ÿã—ãŸãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã®åã‚Šã‚’ãªãŠã—ãŸè©± - å…ƒRX-7ä¹—ã‚Šã®é©å½“ãªæ—¥ã€…
ã¯ã˜ã‚ã« ã¨ã‚ã‚‹ç’°å¢ƒã®è©±ã€‚internalã®Linuxã‚µãƒ¼ãƒã§bonding(ãƒœãƒ³ãƒ‡ã‚£ãƒ³ã‚°)ã‚’çµ„ã‚“ã§ã„ã¾ã—ãŸã€‚modeã¯4ã€‚802.3ad(LACP)æº–æ‹ ã®ãƒªãƒ³ã‚¯ã‚¢ã‚°ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãªãƒ¢ãƒ¼ãƒ‰ã§ã™ã€‚ ã¡ãªã¿ã«ã€bondingã¨ã¯ãƒ»ãƒ»ãƒ» ã¡ãªã¿ã«ã€"bonding"ã¨ã¯ã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ãƒ¼ã‚¹ã‚’å†—é•·åŒ–(ã¾ãŸã¯è² è·åˆ†æ•£)ã™ã‚‹æ–¹æ³•ã§ã€è¤‡æ•°ã®NICã‚’æŸãã¦1æœ¬ã«è¦‹ã›ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ãƒãƒ¼ãƒŸãƒ³ã‚°(teaming)ã¨å‘¼ã°ã‚ŒãŸã‚Šã‚‚ã—ã¾ã™ãã€‚ ã§ã€Linuxã§ã¯bondingã«ã‚‚ã„ãã¤ã‹ãƒ¢ãƒ¼ãƒ‰ãŒã‚ã£ã¦ã€è¤‡æ•°ã®ãƒãƒªã‚·ãƒ¼ã®ä¸ã‹ã‚‰é¸æŠžã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ balance-rr åˆã¯ 0 - è€éšœå®³æ€§ã¨ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚·ãƒ³ã‚°ã®ãŸã‚ãƒ©ã‚¦ãƒ³ãƒ‰ãƒãƒ“ãƒ³ãƒãƒªã‚·ãƒ¼ã‚’è¨å®šã—ã¾ã™ã€‚åˆ©ç”¨å¯èƒ½ãªç¬¬ 1 ã®ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ãƒ¼ã‚¹ã‹ã‚‰ãã‚Œãžã‚Œã®ãƒœãƒ³ãƒ‡ã‚£ãƒ³ã‚°ã•ã‚ŒãŸã‚¹ãƒ¬ãƒ¼ãƒ–ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ãƒ¼ã‚¹ã§é€å—ä¿¡ãŒé †æ¬¡è¡Œã‚ã‚Œã¾ã™ã€‚ active-backup åˆã¯
hogem 2012/04/13
ã‚ãƒ¼ã“ã‚Šã‚ƒã„ã„ã‚ mode=2,4ã®ã¨ãã¯mac ã‚¢ãƒ‰ãƒ¬ã‚¹ã§ã®xor ã«ã—ã‹ãªã‚‰ãªã„ã¨æ€ã„è¾¼ã‚“ã§ãŸ

linux

network
ãƒªãƒ³ã‚¯
CentOS ã® bonding ã® arp_validate ã‚ªãƒ—ã‚·ãƒ§ãƒ³
CentOS 5 ãŠã‚ˆã³ CentOS 6 ã® bonding ã§ ARP ç›£è¦–ã‚’è¡Œã†å ´åˆã€arp_validate ã¨ã„ã†ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’åˆ©ç”¨ã§ãã¾ã™ã€‚ ä»¥ä¸‹ã€ãã®å‡¦ç†å†…å®¹ã«ã¤ã„ã¦ã®ãƒ¡ãƒ¢ã§ã™ã€‚ Bladeã‚µãƒ¼ãƒ BladeåŽç´ãƒ¦ãƒ‹ãƒƒãƒˆ â”Œâ”€â”€â”€â”€â”€â”€â”€â”€â”€â”€â”â”€â”€â”€â”€â”€â”€â”€â”€â”€â”€â”€â”€â”€â”€â” â”‚ activeâ”‚ â”Œâ”€â”€â”€â”Blade â”‚ Bladeå¤–éƒ¨switch â”‚ â”Œâ”€â”€â” â”Œâ”€â”€â”¤ â”‚ â”‚å†…éƒ¨switch â”Œâ”€â”€â”€â” â”‚ â”‚ â”œâ”€â”¤eth0â”œâ”€â”€â”€â”€â”€â”¤ SW1 â”œâ”€â”€â”€â”€â”€â˜…â”¤ â”‚ â”‚ â”‚ â”‚ â””â”€â”€â”¤â†’â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â” â”‚ â”Œâ”€â”€â”€â” â”‚ bond0 â”‚ â”‚ARPè¦æ±‚ â””â”€â”€â”€â”˜ â”‚ â”‚ï¼šSW3 â”‚ arp_ip_target â”‚ â”‚192.168.50.111â”‚broadcast â”Œâ”€â”€â”€â” â”‚ â”‚ï¼š â”œâ”€â”¤192.168.50.222 â”‚ â”‚ â”‚ â”Œâ”€â”€â”¤â†â€¦â€¦
hogem 2011/11/20
linuxã®bondingã§arpç›£è¦–ã™ã‚‹æ™‚ã®arp_validate ã‚ªãƒ—ã‚·ãƒ§ãƒ³ / broadcastã‚’æŠ•ã’ã‚‹hostãŒä»–ã«ã‚‚å˜åœ¨ã™ã‚‹å ´åˆã€arp_validateã‚’è¨å®šã—ãªã„ã¨ã€éšœå®³ã‚’æ¤œçŸ¥ã§ããªã„ / ãŸã ã—ã€kernelã®bug?ã§ã€bridge interfaceä¸Šã§ã¯å‹•ã‹ãªã„ (slave interfaceãŒdownã«ãªã‚‹)

linux

network
ãƒªãƒ³ã‚¯
JF: Linux Kernel 3.x/2.6 Documentation: bonding.txt
Linux Kernel 3.x/2.6 Documentation: /usr/src/linux/Documentation/networking/bonding.txt networking/bonding.txt Linux bonding ãƒ‰ãƒ©ã‚¤ãƒã®è¨å®šæ–¹æ³• [ãƒ—ãƒ¬ã‚¤ãƒ³ãƒ†ã‚ã‚¹ãƒˆç‰ˆ] åŽŸè‘—ä½œè€…: Thomas Davis <tadavis at lbl.gov> ç¿»è¨³è€…: Akira Yoshiyama <yosshy at debian dot or dot jp> ãƒãƒ¼ã‚¸ãƒ§ãƒ³: 2.6.25 ç¿»è¨³æ—¥æ™‚: 2008/02/20 Linux Ethernet Bonding Driver HOWTO % Latest update: 12 November 2007 % æœ€çµ‚æ›´æ–°ï¼š2007å¹´11æœˆ12æ—¥ %Initial release : Thomas Davis <tadavi
hogem 2011/11/18
bondingã®æ—¥æœ¬èªžè¨³

linux

network
ãƒªãƒ³ã‚¯
TCP/IP ã§ TIME_WAIT ãŒæ®‹ã‚‹æ™‚é–“ã‚’çŸãã™ã‚‹
TIME_WAIT çŠ¶æ…‹ã® TCP ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ãŒå¤šæ•°æ®‹ã‚‹ netstat ã‚³ãƒžãƒ³ãƒ‰ã§ TCP ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã®çŠ¶æ…‹ã‚’ç¢ºèªã—ã¦ã„ã‚‹ã¨ã€"TIME_WAIT" ã¨ã„ã†çŠ¶æ…‹ã®ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ãŒãŸãã•ã‚“ç¢ºèªã•ã‚Œã‚‹å ´åˆãŒã‚ã‚Šã¾ã™ã€‚ "TIME_WAIT" çŠ¶æ…‹ã¨ã„ã†ã®ã¯ TCP ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã«ãŠã„ã¦ã€ã“ã¡ã‚‰å´ã‹ã‚‰é€šä¿¡ã‚’ã—ãŸå ´åˆã« "FIN_WAIT_1" (FIN ACK å—ä¿¡) ã‹ã‚‰ã€"FIN_WAIT_2" (ACK å—ä¿¡) ã¾ãŸã¯ "CLOSING" (FIN å—ä¿¡, ACK é€ä¿¡)ã‚’çµŒã¦ã€ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã‚’é–‰ã˜ã‚‰ã‚Œã‚‹çŠ¶æ…‹ã¨ãªã£ãŸã“ã¨ã‚’ç¤ºã™ã‚‚ã®ã®ã‚ˆã†ã§ã™ã€‚ ãã—ã¦ã“ã® "TIME_WAIT" ã‹ã‚‰ã€å®Ÿéš›ã«ãã®ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ãŒé–‰ã˜ã‚‰ã‚Œã¦ "CLOSED" ã¨ãªã‚‹ã¾ã§ã®é–“ã«å¾…ã¡æ™‚é–“ãŒã‚ã‚Šã€ã“ã‚Œã«ã‚ˆã£ã¦ã€çŸæ™‚é–“ã«é€šä¿¡ãŒé›†ä¸ã™ã‚‹ã¨ã€ãã®åˆ†ã ã‘é€šä¿¡çµ‚äº†é–“éš›ã® "TIME_WAIT" çŠ¶æ…‹ã®ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ãŒå¤šæ•°ã€ne
hogem 2011/08/23
linux

network
ãƒªãƒ³ã‚¯
Linux Advanced Routing & Traffic Control HOWTO
Table of Contents1. çŒ®è¾ž2. ã¯ã˜ã‚ã«2.1. å…è²¬ãŠã‚ˆã³ãƒ©ã‚¤ã‚»ãƒ³ã‚¹2.2. äº‹å‰ã«å¿…è¦ãªçŸ¥è˜2.3. Linux ã«ã§ãã‚‹ã“ã¨2.4. ã“ã®æ–‡æ›¸ã®ç®¡ç†ã«ã¤ã„ã¦ã®ãƒ¡ãƒ¢2.5. å–å¾—ã€CVS ãŠã‚ˆã³ã‚¢ãƒƒãƒ—ãƒ‡ãƒ¼ãƒˆã®æŠ•ç¨¿2.6. ãƒ¡ãƒ¼ãƒªãƒ³ã‚°ãƒªã‚¹ãƒˆ2.7. ã“ã®æ–‡æ›¸ã®æ§‹æˆ3. iproute2 å…¥é–€3.1. ãªãœ iproute2 ãªã®ã‹?3.2. iproute2 ã®æ¦‚ç•¥3.3. äº‹å‰ã®å¿…è¦æ¡ä»¶3.4. ç¾åœ¨ã®è¨å®šã‚’èª¿ã¹ã¦ã¿ã‚‹3.5. ARP4. Rules - ãƒ«ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ãƒãƒªã‚·ãƒ¼ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹4.1. ç°¡å˜ãªã‚½ãƒ¼ã‚¹ãƒãƒªã‚·ãƒ¼ãƒ«ãƒ¼ãƒ†ã‚£ãƒ³ã‚°4.2. è¤‡æ•°ã®ã‚¢ãƒƒãƒ—ãƒªãƒ³ã‚¯/ãƒ—ãƒãƒã‚¤ãƒ€ã«å¯¾ã™ã‚‹ãƒ«ãƒ¼ãƒ†ã‚£ãƒ³ã‚°5. GRE ãƒˆãƒ³ãƒãƒ«ã€ãã®ä»–ã®ãƒˆãƒ³ãƒãƒ«5.1. ãƒˆãƒ³ãƒãƒ«ã«é–¢ã™ã‚‹ä¸€èˆ¬çš„ãªäº‹æŸ„5.2. IP in IP ãƒˆãƒ³ãƒãƒªãƒ³ã‚°5.3. GRE ãƒˆãƒ³ãƒãƒªãƒ³ã‚°5.4. ãƒ¦ãƒ¼ã‚¶ãƒ©ãƒ³ãƒ‰ã®ãƒˆãƒ³ãƒãƒ«6.
hogem 2011/02/07
"iproute2ã€ ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯åˆ¶å¾¡ã€ãŠã‚ˆã³å¤šå°‘ã® netfilter ã«é–¢ã™ã‚‹ã€æ¥µã‚ã¦å®Ÿè·µçš„ãªã‚¢ãƒ—ãƒãƒ¼ãƒã€‚"

linux

network
ãƒªãƒ³ã‚¯
ãƒšãƒ¼ã‚¸ãŒè¦‹ã¤ã‹ã‚Šã¾ã›ã‚“ | æ—¥æœ¬HP
ãƒšãƒ¼ã‚¸ãŒè¦‹ã¤ã‹ã‚Šã¾ã›ã‚“ã€‚ ç›®çš„ã®ãƒšãƒ¼ã‚¸ã¯ã€ç§»å‹•ã¾ãŸã¯å‰Šé™¤ã«ã‚ˆã£ã¦ç„¡åŠ¹ã«ãªã£ã¦ã„ã‚‹å¯èƒ½æ€§ãŒã‚ã‚Šã¾ã™ã€‚ç”³ã—è¨³ã‚ã‚Šã¾ã›ã‚“ãŒã€æ¤œç´¢ã¾ãŸã¯ãƒªãƒ³ã‚¯å…ˆã‚ˆã‚ŠãŠæŽ¢ã—ãã ã•ã„ã€‚
hogem 2010/07/12
linuxã®interface bondingã™ã‚‹ã¨ãã®ãƒ¢ãƒ¼ãƒ‰ã®é•ã„ã«ã¤ã„ã¦

linux

network
ãƒªãƒ³ã‚¯
ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ãƒ»ãƒ„ãƒ¼ãƒ«ã‚’è©¦ã™ - nepimã€LMbenchã€nuttcp | OSDN Magazine
ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ã§ã¯ã€ä¼é€é€Ÿåº¦ã¨é…å»¶æ™‚é–“ã¨ã„ã†2ã¤ã®æŒ‡æ¨™ãŒç‰¹ã«é–¢å¿ƒã®å¯¾è±¡ã¨ãªã‚‹ã€‚ã‚µãƒ¼ãƒ“ã‚¹ã‚„è£½å“ã®åºƒå‘Šã§ã¯ã€ä¼é€é€Ÿåº¦ã®æ–¹ãŒå¤§ããå–ã‚Šä¸Šã’ã‚‰ã‚Œã‚‹ã“ã¨ãŒå¤šã„ãŒã€çŠ¶æ³ã«ã‚ˆã£ã¦ã¯é…å»¶æ™‚é–“ã®æ–¹ãŒé‡è¦ãªæŒ‡æ¨™ã¨ãªã‚‹å ´åˆã‚‚ã‚ã‚‹ã€‚ã“ã®è¨˜äº‹ã§ã¯ã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹æ¸¬å®šã«åˆ©ç”¨ã§ãã‚‹3ã¤ã®ãƒ„ãƒ¼ãƒ«ã‚’è¦‹ã¦ã„ãã“ã¨ã«ã—ã‚ˆã†ã€‚nepimï¼ˆnetwork pipemeterï¼‰ã€LMbenchã€nuttcpã®3ã¤ã ã€‚ ä»Šå›žã®ãƒ†ã‚¹ãƒˆã§ã¯ã€64ãƒ“ãƒƒãƒˆã®Fedora 9æè¼‰ãƒžã‚·ãƒ³ã§å„ãƒ„ãƒ¼ãƒ«ã‚’ã‚½ãƒ¼ã‚¹ã‹ã‚‰ãƒ“ãƒ«ãƒ‰ã—ãŸã€‚ä½¿ç”¨ã—ãŸãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯ã€nepimãŒ0.51ã€LMbenchãŒ3ã€nuttcpãŒ5.5.5ã ã€‚ ã¾ãŸä»Šå›žã¯ã€ã‚®ã‚¬ãƒ“ãƒƒãƒˆãƒ»ã‚¤ãƒ¼ã‚µãƒãƒƒãƒˆã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ»ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ãƒ»ã‚«ãƒ¼ãƒ‰2æžšã‚’bondingæ§‹æˆï¼ˆç¿»è¨³è¨˜äº‹ï¼‰ã§çµ„ã¿åˆã‚ã›ãŸãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ»ãƒªãƒ³ã‚¯ã‚’ä½¿ç”¨ã—ãŸã€‚ã ãŒã€çµæžœã‚’è¦‹ã‚‹ã¨ã‚ã‹ã‚‹ã‚ˆã†ã«ã€ä½•ã‹ãŒã†ã¾ãæ©Ÿèƒ½ã—ã¦ã„ãª
hogem 2009/12/23
linux

network
ãƒªãƒ³ã‚¯
tcpdumpã¨iptablesã®é–¢ä¿‚ - ï¼ˆã²ï¼‰ãƒ¡ãƒ¢
è¿½è¨˜ 2009-04-03 ã¾ã£ãŸãã‚‚ã£ã¦ãƒ–ã‚³ãƒ¡ã§ã„ãŸã ã„ãŸæŒ‡æ‘˜ã®é€šã‚Šã§ã™ï¼žï¼œ h2onda linux, tcpdump tcpdump(ã¨ã„ã†ã‹libpcap)ã¯ã€ãƒ‡ãƒ¼ã‚¿ãƒªãƒ³ã‚¯å±¤(OSI layer2)ãƒ¬ãƒ™ãƒ«ã§ãƒ‘ã‚±ãƒƒãƒˆã‚’å–å¾—ã™ã‚‹ packet ãƒ—ãƒãƒˆã‚³ãƒ«ã‚’ä½¿ã£ã¦ã‚‹ã®ã§ã€ãã†ãªã‚Šã¾ã™ã€‚å‚ç…§: man packet(7) 2009/04/02 ã¯ã¦ãªãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ - h2ondaã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ / 2009å¹´4æœˆ2æ—¥ tt_clown network ç´°ã‹ã„ã‘ã©ï¼Œå›³ã¯é€†ï¼ˆNIC ãŒä¸‹ï¼‰ã®ãŒè‰¯ã„ã‹ãªã¨æ€ã£ãŸï¼Ž/ "ip"tables ã¨è¨€ã†ä½ã ã‹ã‚‰ï¼ŒIPå±¤ã§ãƒ‘ã‚±ãƒƒãƒˆã‚’ãƒ•ã‚£ãƒ«ã‚¿ã—ã¦ã‚‹ã¦äº‹ã ã‚ã†ãªï¼Žtcpdumpã¯Ethernet Frameã‚‚è¦‹ãˆã‚‹ã®ã§ï¼Œå¾Œã¯åˆ†ã‹ã‚‹ãªï¼Ÿãƒ»ãƒ»ãƒ»ã¦ã¨ã“ã‹ï¼Ž 2009/04/02 ã¯ã¦ãªãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ - tt_clownã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ / 2009å¹´4æœˆ2æ—¥ pack
hogem 2009/08/02
linux

network
ãƒªãƒ³ã‚¯
Makuosan - KLablabWiki
æ¦‚è¦ MAKUOSAN (Multicasts All-Kinds of Updating Operation for Servers on Administered Network) makuosanï¼ˆã¾ããŠã•ã‚“ï¼šé€šç§°ã€Œã¾ããŠã€ï¼‰ã¯ã€è¤‡æ•°ã®ã‚µãƒ¼ãƒã¸åŒæ™‚ã«ãƒ•ã‚¡ã‚¤ãƒ«ã‚’è»¢é€ã™ã‚‹ã‚½ãƒ•ãƒˆã‚¦ã‚¨ã‚¢ã§ã™ã€‚ ä»¥ä¸‹ã®ã‚ˆã†ãªç‰¹å¾´ãŒã‚ã‚Šã¾ã™ã€‚ ã‚µãƒ¼ãƒãŒå¢—ãˆã¦ã‚‚è»¢é€æ™‚é–“ãŒå¤‰ã‚ã‚‰ãªã„ ã‚µãƒ¼ãƒãŒå¢—ãˆã¦ã‚‚ã€è»¢é€ã«ã‹ã‹ã‚‹æ™‚é–“ã¯ã»ã¨ã‚“ã©ã‹ã‚ã‚Šã¾ã›ã‚“ã€‚10å°ã®ã‚µãƒ¼ãƒã«è»¢é€ã—ã¦ã‚‚ã€20å°ã®ã‚µãƒ¼ãƒã«è»¢é€ã—ã¦ã‚‚ã€ã»ã¨ã‚“ã©åŒã˜æ™‚é–“ã§å®Œäº†ã—ã¾ã™ã€‚ãŸã ã—ã€è»¢é€æ™‚é–“ã¯ä¸€ç•ªå¿œç”ãŒé…ã„ã‚µãƒ¼ãƒã®æ€§èƒ½ã«å¼•ã£å¼µã‚‰ã‚Œã‚‹ã®ã§ã€åŒç¨‹åº¦ã®ã‚¹ãƒšãƒƒã‚¯ã®ã‚µãƒ¼ãƒã§æ§‹ç¯‰ã•ã‚ŒãŸç’°å¢ƒã§åˆ©ç”¨ã™ã‚‹ã“ã¨ãŒæœ›ã¾ã—ã„ã§ã™ã€‚ ã™ã¹ã¦ã®ã‚µãƒ¼ãƒã§åŒæ™‚ã«ãƒ•ã‚¡ã‚¤ãƒ«ãŒæ›´æ–°ã•ã‚Œã‚‹ ãƒžãƒ«ãƒã‚ãƒ£ã‚¹ãƒˆã‚’ä½¿ã£ã¦å…¨ã‚µãƒ¼ãƒã¸åŒæ™‚ã«ãƒ•ã‚¡ã‚¤ãƒ«ã‚’è»¢é€ã™ã‚‹ãŸã‚ã€ã€Œã“ã®ã‚µãƒ¼ãƒã®ãƒ•ã‚¡ã‚¤ãƒ«ã¯æ›´æ–°ã•ã‚Œã¦ã‚‹ã‘ã©ã€ã‚ã®ã‚µ
hogem 2009/06/07
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linux

network

software
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linux ã«ãŠã‘ã‚‹ arp ã®æŒ™å‹•ã«é–¢ã™ã‚‹ãƒ¡ãƒ¢ - tashenã®æ—¥è¨˜
ã¡ã‚‡ã£ã¨ã„ã‚ã„ã‚è¬Žã‹ã£ãŸã®ã§èª¿ã¹ã¾ã—ãŸã€‚ ARP Request ã¯ã„ã¤é€ä¿¡ã•ã‚Œã‚‹ã‹ ç¢ºèªã§ããŸã®ã¯ä»¥ä¸‹ arp ãƒ†ãƒ¼ãƒ–ãƒ«ã«ã‚¨ãƒ³ãƒˆãƒªãŒãªã„ ip ã‚¢ãƒ‰ãƒ¬ã‚¹ã«æŽ¥ç¶šã‚’è©¦ã¿ãŸã¨ã ã‚¨ãƒ³ãƒˆãƒªãŒã€Œå¤ã„ã€ã¨ã¿ãªã•ã‚ŒãŸçŠ¶æ…‹ã§å†åº¦æŽ¥ç¶šã‚’è©¦ã¿ãŸã¨ãï¼ˆï¼ç„¡åŠ¹ã¨ã¿ãªã•ã‚ŒãŸã¨ãï¼Ÿï¼‰ ARP ã‚¨ãƒ³ãƒˆãƒªã®å¯¿å‘½ãŒå»¶ã³ã‚‹ã¨ã C ã® API sendmsg ã§ã€ã‚½ã‚±ãƒƒãƒˆã« MSG_CONFIRM ãŒé€ä¿¡ã•ã‚ŒãŸã¨ã linux arp ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã«å¯¾ã—ã¦æ£ã®ãƒ•ã‚£ãƒ¼ãƒ‰ãƒãƒƒã‚¯ã‚’é€ã‚‹ã€‚ARP ãƒ†ãƒ¼ãƒ–ãƒ«ã«å…¥ã£ã¦ã„ã‚‹ cache entry ã®å¯¿å‘½ã‚’ä¼¸ã°ã™ã‚ˆã†ã ã€‚ TCP ã§ ACK ãŒå¸°ã£ãŸã¨ããªã‚“ã‹ã«å®Ÿè¡Œã•ã‚Œã‚‹ã‚‰ã—ã„ ARP ã‚¨ãƒ³ãƒˆãƒªã®å¯¿å‘½ãŒçŸããªã‚‹ã¨ã arp -d ã™ã‚‹ä»¥å¤–ã«ã¯è¦‹ã¤ã‹ã‚‰ãªã‹ã£ãŸã€‚å°‘ãªãã¨ã‚‚ ping ã‚³ãƒžãƒ³ãƒ‰ã‚„ telnet ã‚³ãƒžãƒ³ãƒ‰ã®ãƒ¬ãƒ™ãƒ«ã§ã¯ã€ä½•åº¦ã‹æŽ¥ç¶šã§ããªã‹ã£ãŸã‹ã‚‰ã¨ã„ã£ã¦ ARP request ãŒ
hogem 2009/06/04
net.ipv4.neigh.{if}.arp_ignore "ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã€‚ãƒãƒ¼ã‚«ãƒ«IPã‚¢ãƒ‰ãƒ¬ã‚¹ã«å¯¾ã™ã‚‹è§£æ±ºè¦æ±‚ã§ã‚ã‚Œã°ã€ãã®IPã‚¢ãƒ‰ãƒ¬ã‚¹ãŒã©ã®ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ãƒ¼ã‚¹ã«è¨å®šã•ã‚Œã¦ã„ã‚‹ã‹ã«é–¢ã‚ã‚‰ãšå¿œç”ã™ã‚‹ã€‚"

linux

network
ãƒªãƒ³ã‚¯
Bal4u : Linux - Tcpdump ã®å‡ºåŠ›è§£æž tcptrace
ãƒãƒƒãƒˆä¸Šã«æµã‚Œã¦ã„ã‚‹ãƒ‘ã‚±ãƒƒãƒˆã‚’ç›£è¦–ã™ã‚‹ tcpdump ã®å‡ºåŠ›ãƒ•ã‚¡ã‚¤ãƒ«ã‚’åˆ†æžã—ã¦ãã‚Œã‚‹ãƒ„ãƒ¼ãƒ« tcptrace ã®ç´¹ä»‹ã€‚ tcptrace ã¯å¤šãã®ãƒ‘ã‚±ãƒƒãƒˆã‚ãƒ£ãƒ—ãƒãƒ£ãƒ¼ãƒ„ãƒ¼ãƒ«ã€tcpdump ã‚„ã€snoopã€etherpeekã€HP Net Metrixã€ãŠã‚ˆã³ WinDump ç‰ã®å‡ºåŠ›ãƒ•ã‚¡ã‚¤ãƒ«ã‚’èªè˜ã§ãã€ã•ã¾ã–ã¾ãªå½¢ã§åˆ†æžã—ã¦ãã‚Œã‚‹ã€‚ã¾ãŸã€ã‚°ãƒ©ãƒ•åŒ–ãƒ‡ãƒ¼ã‚¿ã«ã™ã‚‹ã“ã¨ã‚‚ã§ãã‚‹ã€‚ å…¬å¼Webã‚µã‚¤ãƒˆã¯ ã“ã¡ã‚‰ã€‚æœ€æ–°ç‰ˆ v6.6.1ã€‚ â– tcptrace ã®ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ« ã¾ãšã€ã‚½ãƒ¼ã‚¹ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã®å…¥æ‰‹ã€ãŠã‚ˆã³ã€å±•é–‹ã€‚ # wget http://jarok.cs.ohiou.edu/software/tcptrace/download/tcptrace- 6.6.1.tar.gz # tar zxvf tcptrace-6.6.1.tar.gz ãã—ã¦ã€ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã¨ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã€‚ # cd tcp
hogem 2008/10/01
"ã•ã‚‰ã«ã€gnuplotã§ã‚°ãƒ©ãƒ•æãã«ã¯ã€ã‚¹ã‚¯ãƒªãƒ—ãƒˆ xpl2gpl ãŒå¿…è¦ã€‚"

linux

network
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DSASé–‹ç™ºè€…ã®éƒ¨å±‹:Linuxã§ã®ã‚¿ã‚°VLANã®åˆ©ç”¨ ã€œ vconfigã®ä½¿ã„æ–¹
ã‚¹ã‚¤ãƒƒãƒé–“ã§ VLAN-ID ã‚’ã‚„ã‚Šã¨ã‚Šã™ã‚‹ãŸã‚ã«åˆ©ç”¨ã•ã‚Œã‚‹ã“ã¨ãŒå¤šã„ã‚¿ã‚°VLANã§ã™ãŒã€Linuxãƒ«ãƒ¼ã‚¿ä¸Šã‹ã‚‰ç›´æŽ¥åˆ©ç”¨ã™ã‚‹ã“ã¨ã§ã€LANã‚±ãƒ¼ãƒ–ãƒ«ã®ã‚¿ã‚³è¶³ã‚’è§£æ¶ˆã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ã¾ã‚ã€ã€ŒL3ã‚¹ã‚¤ãƒƒãƒä½¿ã†ã‹ã‚‰ã„ã„ã‚‚ã‚“ã€ã¨ã„ã†æ–¹ã¯è»½ãæµã—ã¦ã‚„ã£ã¦ä¸‹ã•ã„ï¼ˆç¬‘ ãŸã ã€Linuxã®netfilterã§VLANé–“ã®ãƒ•ã‚£ãƒ«ã‚¿åˆ¶å¾¡ãŒã§ãã‚‹ã®ã¯é…åŠ›ã«æ„Ÿã˜ã¾ã™ã€‚ apt-get install vlan ã“ã‚Œã§ã€ã•ãã£ã¨ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã§ãã¾ã™ã€‚ ä½¿ã„æ–¹ã‚‚éžå¸¸ã«ã‚·ãƒ³ãƒ—ãƒ«ã§ã€ vconfig add ãƒ‡ãƒã‚¤ã‚¹å VLAN-ID ã¨ã™ã‚‹ã ã‘ã§ã™ã€‚ ä¾‹ãˆã°ã€ vconfig add eth0 1 ã¨ã™ã‚‹ã¨ã€eth0.1 ã¨ã„ã†ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ã‚¤ã‚¹ãŒä½œã‚‰ã‚Œã€VLAN-ID=1 ã®ã‚¿ã‚°ä»˜ããƒ‘ã‚±ãƒƒãƒˆã¯ã“ã“ã‹ã‚‰å‡ºå…¥ã‚Šå‡ºæ¥ã‚‹ã‚ˆã†ã«ãªã‚Šã¾ã™ã€‚äº›ç´°ãªã“ã¨ã§ã™ãŒã€VLANã‚¿ã‚°ä»˜ãã®ãƒ‘ã‚±ãƒƒãƒˆãŒ eth0.* ã‹ã‚‰å‡ºå…¥ã‚Šã—ã¦ã„ã‚‹æ§˜åã‚’æœ€åˆã«
hogem 2008/08/26
linuxã§ã‚‚ã‚¿ã‚°VLANã§ããŸã®ã‹ã€‚ã€‚ã€‚ãªãœã‹å‡ºæ¥ãªã„ã‚‚ã‚“ã ã¨æ€ã„è¾¼ã‚“ã§ãŸ

linux

vlan

network
ãƒªãƒ³ã‚¯
http://www.sb.soft.iwate-pu.ac.jp/~yushi/memo/ssh_port_forward.html
hogem 2008/06/25
network

linux

ssh
ãƒªãƒ³ã‚¯
ã½ã¡ãƒãƒƒãƒˆ-Linuxå‚™å¿˜éŒ²-Hints&Tips-ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚’å†—é•·åŒ–ã™ã‚‹æ–¹æ³•
44ï¼Žãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚’å†—é•·åŒ–ã™ã‚‹æ–¹æ³• Linuxã‚«ãƒ¼ãƒãƒ«2.4.18ä»¥é™ã®ã‚«ãƒ¼ãƒãƒ«ã‚’ä½¿ã£ã¦ã„ã‚Œã°ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®å¯ç”¨æ€§ã‚’é«˜ã‚ã‚‹ã“ã¨ãŒã§ãã‚‹ã€‚ ã“ã‚Œã¯Linuxã‚«ãƒ¼ãƒãƒ«ã®æ©Ÿèƒ½ã§ã‚ã‚‹bondï¼ˆçµ±åˆï¼‰æ©Ÿèƒ½ã«ã‚ˆã£ã¦å®Ÿç¾å¯èƒ½ã§ã™ã€‚å€‹äººä½¿ç”¨ã§ã¯å¿…è¦æ€§ã¯ä½Žã„ã§ã™ãŒå¯ç”¨æ€§ä»¥å¤–ã«ã‚‚è¤‡æ•°ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ»ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ãƒ¼ã‚¹ã‚’æŸãã¦è»¢é€é€Ÿåº¦ã‚’ä¸Šã’ã‚‹ã“ã¨ã‚‚å¯èƒ½ãªã®ã§ã€çŸ¥ã£ã¦ãŠãã¨ä¾¿åˆ©ã§ã—ã‚‡ã†ã€‚ ï¼‘ï¼ŽBondingãƒ‰ãƒ©ã‚¤ãƒãƒ¼ã®å®šç¾©æ–¹æ³• /etc/modules.confã¾ãŸã¯/etc/modprobe.confã«æ¬¡ã®ã‚ˆã†ã«è¨˜è¿°ã—ã¾ã™ã€‚
hogem 2008/04/16
network

linux

ha
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http://blog.dc-d.jp/archives/290.html
hogem 2008/04/16
network

linux

ha
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