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

yagitoshiro id:yagitoshiro

networkã«é–¢ã™ã‚‹yagitoshiroã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (17)

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ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«è‡ªä¿¡ã®ãªã„äººã¯æ±å¤§è¬›ç¾©ã®æƒ…å ±å·¥å¦æ¦‚è«–ï¼¡ã‚’è¦‹ã‚ˆã† - 2012-01-28 - ãã—ã ã®ã¯ã¦ãª
æ±å¤§ã«UTã‚ªãƒ¼ãƒ—ãƒ³ã‚³ãƒ¼ã‚¹ã‚¦ã‚§ã‚¢ã¨ã„ã†ã®ãŒã‚ã£ã¦ã€ã„ã‚ã„ã‚ãªè¬›ç¾©è³‡æ–™ãŒå…¬é–‹ã•ã‚Œã¦ã„ã¾ã™ã€‚ http://ocw.u-tokyo.ac.jp/ ãã®ä¸ã«ã¯å‹•ç”»æŽˆæ¥ãŒã‚ã‚‹ã‚‚ã®ã‚‚ã‚ã£ã¦ã€ãã®ã»ã¼ã™ã¹ã¦ãŒãŠã‚‚ã—ã‚ã„ã§ã™ã€‚ãŸã èˆˆå‘³ãŒã‚‚ã¦ã‚‹ã‹ã©ã†ã‹ã¨ã„ã†é•ã„ã ã‘ã€‚ ãã®ä¸ã§ã€æƒ…å ±å·¥å¦æ¦‚è«–ï¼¡ã¨ã„ã†ã®ãŒã‚ã£ã¦ã€æŽˆæ¥å†…å®¹ã¨ã—ã¦ã¯ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®æ¦‚è«–ã«ãªã£ã¦ã¾ã™ã€‚ã¾ã å…¨éƒ¨è¦‹ã¦ãªã„ã‘ã©ã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯å…¨èˆ¬ã®è©±ã‹ã‚‰TCP/IPã®è©±ã€ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã¾ã§ã®è¬›ç¾©ãŒå…¬é–‹ã•ã‚Œã¦ã‚‹ã¿ãŸã„ã€‚ ã“ã†ã„ã†ä¸€è²«ã—ãŸè©±ãŒã¡ã‚ƒã‚“ã¨èªžã‚‰ã‚Œã¦ã‚‹è¬›ç¾©ã¨ã„ã†ã®ã¯ãªã‹ãªã‹å…¬é–‹ã•ã‚Œã¦ãªã„ã€å…¬é–‹ã•ã‚Œã¦ãŸã¨ã—ã¦ã‚‚ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯è¨å®šç¨‹åº¦ã ã£ãŸã‚Šã™ã‚‹ã®ã§ã€ã“ã‚Œã¯è²´é‡ã ã¨æ€ã„ã¾ã™ã€‚ http://ocw.u-tokyo.ac.jp/lecture?id=11314&r=609526321 ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®å‹‰å¼·ã‚’ã—ãŸã“ã¨ãŒãªã„äººã¯ã€ãƒ†ãƒ¬ãƒ“ã®ã‹ã‚ã‚Šã«ã“ã®è¬›ç¾©ã‚’æµã—ã¦ãŠãã¨ã„
yagitoshiro 2012/02/20
network

opencourse
ãƒªãƒ³ã‚¯
ssh ã® brute force ã‚¢ã‚¿ãƒƒã‚¯ãƒ‘ã‚±ãƒƒãƒˆã®åˆ¶é™ -- DOS çš„ãƒ‘ã‚±ãƒƒãƒˆã‚’ãƒ•ã‚£ãƒ«ã‚¿ãƒªãƒ³ã‚°ã™ã‚‹ : DSASé–‹ç™ºè€…ã®éƒ¨å±‹
KLab ã¯ã‚³ãƒ³ãƒ†ãƒ³ãƒ„ã®é–‹ç™ºã¨å…±ã«é‹ç”¨ã‚‚æ—¥ã€…æ‹…ã£ã¦ã„ã¾ã™ãŒï¼Œãã®æ´»å‹•ã®å…¨ã¦ã®æ‹ ç‚¹ã¯ç¤¾å†…ã®ã‚·ã‚¹ãƒ†ãƒ ã§ã™ï¼Žãã®ãŸã‚ï¼Œç¤¾ã®ã‚·ã‚¹ãƒ†ãƒ ã«ã¯ã„ã¤ã§ã‚‚å¤–ã‹ã‚‰ã‚¢ã‚¯ã‚»ã‚¹ã§ãã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ï¼Žã‚·ã‚¹ãƒ†ãƒ ã¸ã®ã‚¢ã‚¯ã‚»ã‚¹ã¯ ssh ã‚’ä½¿ã†ã®ã§ã™ãŒï¼Œã“ã® ssh ã¸ã®ã‚¢ã‚¯ã‚»ã‚¹ã¯å‰è¨˜ã®ç†ç”±ã§ä¸–ç•Œä¸ã‹ã‚‰ã‚¢ã‚¯ã‚»ã‚¹ã§ãã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ï¼Žã“ã†ã„ã£ãŸå…¬é–‹ã•ã‚Œã¦ã„ã‚‹ ssh ã®ãƒãƒ¼ãƒˆã¸ã¯æ—¥ã€…é£½ãã‚‚ã›ãšã« brute force ã‚¢ã‚¿ãƒƒã‚¯ãŒç¹°ã‚Šè¿”ã•ã‚Œã¦ã„ã¾ã™ï¼Žsshd ã¯ã“ã®ã‚ˆã†ãªæˆåŠŸã™ã‚‹ã¯ãšã®ãªã„ã‚¢ã‚¿ãƒƒã‚¯ã§ã‚ã£ã¦ã‚‚å¾‹å„€ã«ãƒã‚°ã‚’å‡ºåŠ›ã—ã¦ãã‚Œã¾ã™ï¼Žã—ã‹ã—ãªãŒã‚‰ï¼Œç„¡æ„å‘³ãªãƒã‚°ã®ç¾…åˆ—ã¯ï¼Œé‡è¦ãªãƒã‚°ãŒåŸ‹ã‚‚ã‚Œã‚‹çµæžœã«ãªã£ã¦å¬‰ã—ãã‚ã‚Šã¾ã›ã‚“ï¼Žãã‚Œã«ï¼Œã‚¢ã‚¿ãƒƒã‚¯ã«ã‚ˆã‚‹ãƒã‚°ã‚¤ãƒ³ã®è©¦è¡Œã®ãŸã‚ã« CPU æ™‚é–“ã‚’ç„¡é§„ã«è²»ã‚„ã™ã®ã‚‚ã°ã‹ã°ã‹ã—ã„ã“ã¨ã§ã™ï¼Ž ãƒã‚°ã®å‡ºåŠ›ã‚„ CPU æ™‚é–“ã®æµªè²»ã‚’ä½Žæ¸›ã™ã‚‹ã«ã¯ï¼Œã“ã‚Œã‚‰ã®æ”»æ’ƒãƒ‘ã‚±ãƒƒãƒˆã‚’ãƒ•ã‚£ãƒ«ã‚¿ãƒªãƒ³ã‚°ã—ã¦ã‚„ã‚Œã°ã„ã„ã®ã§ã™ãŒï¼Œ
yagitoshiro 2010/04/23
linux

network

security

ssh

iptables
ãƒªãƒ³ã‚¯
TCPã‚µãƒ¼ãƒã®ãƒ†ã‚¹ãƒˆç”¨ã«ã€ç©ºããƒãƒ¼ãƒˆã‚’è¦‹ã¤ã‘ã‚‹æ–¹æ³• - kazuhoã®ãƒ¡ãƒ¢ç½®ãå ´
Perl ã§ã‚µãƒ¼ãƒã‚’ãƒ†ã‚¹ãƒˆã™ã‚‹ãŸã‚ã®ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ« Test::TCP ã®ä½œè€… id:tokuhirom ãŒè¨€ã£ã¦ãŸã“ã¨ã ã‘ã©ã€ãƒ†ã‚¹ãƒˆç”¨ã«ç©ºããƒãƒ¼ãƒˆã‚’è¦‹ã¤ã‘ã‚‹ã®ã¯ã€bind ã® port ç•ªå·ã« 0 ã‚’æ¸¡ã™ã®ãŒä¸€ç•ªç°¡å˜ã€‚Perl ã§æ›¸ããªã‚‰ã€ã“ã‚“ãªæ„Ÿã˜ã€‚ my $unused_port = do { my $l = IO::Socket::INET->new( Listen => 5, LocalHost => '127.0.0.1', LocalPort => 0, Proto => 'tcp', ReuseAddr => 1, ) or die $!; $l->sockport; }; ã“ã‚Œã§ç¢ºä¿ã•ã‚Œã‚‹ã®ã¯ emphemeral port ãªã®ã§ã€å–å¾—ã—ãŸãƒãƒ¼ãƒˆç•ªå·ã‚’å†ã³ä½¿ãŠã†ã¨ã™ã‚‹é–“ã«ä»–ã®ãƒ—ãƒã‚°ãƒ©ãƒ ãŒ (outgoing TCP connection ã®ãŸã‚ã«) ä½¿ã£ã¡ã‚ƒã†å¯èƒ½æ€§ã¯è«–ç†çš„
yagitoshiro 2010/02/23
tcp

network

test

Perl
ãƒªãƒ³ã‚¯
Ganglia Development Team
Ganglia is a scala ble distributed monitoring system for high-performance computing systems such as clusters and Grids. It is based on a hierarchical design targeted at federations of clusters. It leverages widely used techno logies such as XML for data representation, XDR for compact, porta ble data transport, and RRDtool for data storage and visualization. It uses carefully engineered data structur
yagitoshiro 2008/11/10
performance

network

scalability

monitoring
ãƒªãƒ³ã‚¯
ã‚«ãƒŸãƒ³ã‚¹ã‚ãƒ¼æ°ãŒç™ºè¡¨ã—ãŸDNSã‚¢ã‚¿ãƒƒã‚¯æ‰‹æ³•ã¨å¯¾ç–ä¾‹ â€• ï¼ IT
ã‚«ãƒŸãƒ³ã‚¹ã‚ãƒ¼æ°ãŒç™ºè¡¨ã—ãŸDNSã‚¢ã‚¿ãƒƒã‚¯æ‰‹æ³•ã¨å¯¾ç–ä¾‹ï¼šDNSã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒã‚¤ã‚ºãƒ‹ãƒ³ã‚°ã®å½±éŸ¿ã¨å¯¾ç–ï¼ˆå‰ç·¨ï¼‰ï¼ˆ1/4 ãƒšãƒ¼ã‚¸ï¼‰ 2008å¹´7æœˆã«å…¬é–‹ã•ã‚ŒãŸDNSã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒã‚¤ã‚ºãƒ‹ãƒ³ã‚°ã®è„†å¼±æ€§ã€‚DNSã®ä»•æ§˜ã«æ·±ãé–¢ä¿‚ã™ã‚‹ã“ã®æ‰‹æ³•ã«å¯¾ã—ã¦ã€ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã¯ã©ã®ã‚ˆã†ã«å¯¾ç–ã‚’æ‰“ã¤ã¹ãã§ã—ã‚‡ã†ã‹ã€‚ã“ã®è„†å¼±æ€§ã®æœ¬è³ªçš„ãªå•é¡Œã¨å¯¾ç–ã€ãã—ã¦ç§ãŸã¡ãŒè€ƒãˆãªãã¦ã¯ãªã‚‰ãªã„ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã®å¿ƒæ§‹ãˆãªã©ã€2å›žã«åˆ†ã‘ã¦ãŠé€ã‚Šã—ã¾ã™ï¼ˆç·¨é›†éƒ¨ï¼‰ â€»ã”æ³¨æ„ æœ¬è¨˜äº‹ã«æŽ²è¼‰ã—ãŸè¡Œç‚ºã‚’è‡ªèº«ã®ç®¡ç†ä¸‹ã«ãªã„ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã€ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã«è¡Œã£ãŸå ´åˆã¯ã€æ”»æ’ƒè¡Œç‚ºã¨åˆ¤æ–ã•ã‚Œã‚‹å ´åˆãŒã‚ã‚Šã€æœ€æ‚ªã®å ´åˆã€æ³•çš„æŽªç½®ã‚’å–ã‚‰ã‚Œã‚‹å¯èƒ½æ€§ã‚‚ã‚ã‚Šã¾ã™ã€‚ã¾ãŸã€ä»Šå›žç´¹ä»‹ã™ã‚‹ãƒ„ãƒ¼ãƒ«ã®ä¸ã«ã¯ã€æ”»æ’ƒè¡Œç‚ºã«åˆ©ç”¨ã•ã‚Œã‚‹ã¨ã„ã†è¦³ç‚¹ã‹ã‚‰ã€ã‚¢ãƒ³ãƒã‚¦ã‚¤ãƒ«ã‚¹ã‚½ãƒ•ãƒˆã«ã‚¦ã‚¤ãƒ«ã‚¹ã¨ã—ã¦æ¤œå‡ºã•ã‚Œã‚‹ã‚‚ã®ã‚‚å˜åœ¨ã—ã¾ã™ã€‚ã“ã®ã‚ˆã†ãªèª¿æŸ»ã‚’è¡Œã†å ´åˆã¯ã€ãã‚Œãã‚Œã‚‚è¨±å¯ã‚’å–ã£ãŸã†ãˆã§ã€è‡ªèº«ã®ç®¡ç†ä¸‹ã«ã‚ã‚‹ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚„
yagitoshiro 2008/09/21
security

network

DNS
ãƒªãƒ³ã‚¯
BGPã‚’åˆ©ç”¨ã—ãŸãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ä¹—ã£å–ã‚Š--ç ”ç©¶è€…ãŒãƒ‡ãƒ¢ã‚’æŠ«éœ²
8æœˆã«é–‹å‚¬ã•ã‚ŒãŸã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã‚«ãƒ³ãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ã€ŒDefconã€ã®ãƒ—ãƒ¬ã‚¼ãƒ³ãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ï¼ˆPDFãƒ•ã‚¡ã‚¤ãƒ«ï¼‰ã§ã€ç ”ç©¶è€…ã®Alex Pilosovæ°ã¨Tony Kapelaæ°ãŒBorder Gateway Protocolï¼ˆBGPï¼‰ã‚’åˆ©ç”¨ã—ãŸæ”»æ’ƒã®ãƒ‡ãƒ¢ãƒ³ã‚¹ãƒˆãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã‚’è¡Œã£ãŸã€‚ BGPã¯ã€è‡ªå¾‹ã‚·ã‚¹ãƒ†ãƒ ï¼ˆASï¼‰ã«ãŠã‘ã‚‹ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯é–“ã®æƒ…å ±äº¤æ›ã‚’å¯èƒ½ã«ã™ã‚‹ãƒ—ãƒãƒˆã‚³ãƒ«ã ã€‚BGPã¯åˆ©ç”¨å¯èƒ½ãªIPãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®ãƒ†ãƒ¼ãƒ–ãƒ«ã‚’ä¿æŒã—ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã«ã¨ã£ã¦æœ€ã‚‚åŠ¹çŽ‡çš„ãªãƒ«ãƒ¼ãƒˆã‚’å‰²ã‚Šå‡ºã™ã€‚Defconã§ã®ãƒ—ãƒ¬ã‚¼ãƒ³ãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã§ã€Pilosovæ°ã¨Kapelaæ°ã¯ãƒ¦ãƒ¼ã‚¶ãƒ¼ã®BGPãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã‚’ä¹—ã£å–ã£ã¦ãƒªãƒ€ã‚¤ãƒ¬ã‚¯ãƒˆã™ã‚‹æ”»æ’ƒã®ãƒ‡ãƒ¢ãƒ³ã‚¹ãƒˆãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã‚’è¡Œã£ãŸã€‚ã“ã®æ‰‹æ³•ã‚’ç”¨ã„ã‚Œã°ã€ã‚»ã‚ãƒ¥ã‚¢ã ã¨ã•ã‚Œã¦ã„ã‚‹é€šä¿¡ã«ã¤ã„ã¦ã‚‚å‚å—ãŒå¯èƒ½ã«ãªã‚‹ã€‚ ä¸¡æ°ã¯ã€ãƒ‡ãƒ¼ã‚¿ãƒ‘ã‚±ãƒƒãƒˆã®æœ‰åŠ¹æœŸé–“ã‚’ç¤ºã™ã€ŒTime to Liveã€ï¼ˆTTLï¼‰æƒ…å ±ã‚’é€šä¿¡ä¸
yagitoshiro 2008/08/31
security

network

bgp
ãƒªãƒ³ã‚¯
Kismetãƒ‘ã‚±ãƒƒãƒˆã‚¹ãƒ‹ãƒƒãƒ•ã‚¡å…¥é–€ | OSDN Magazine
ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã®å°‚é–€å®¶ã«ã¨ã£ã¦æ¬ ã‹ã›ãªã„ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹ãƒ„ãƒ¼ãƒ«ã®æ•°ã¯å¢—ãˆç¶šã‘ã¦ã„ã‚‹ãŒã€ Kismet ã‚‚ãã®ä¸€ã¤ã ã€‚Kismetã¯ã€Œãƒ¯ã‚¤ãƒ¤ãƒ¬ã‚¹ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯æ¤œå‡º/ã‚¹ãƒ‹ãƒƒãƒ•ã‚¡/ä¾µå…¥æ¤œçŸ¥ã‚·ã‚¹ãƒ†ãƒ ã€ã§ã€Windowsã€Mac OS Xã€BSDãªã©POSIXäº’æ›ã®ã©ã®ãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ ã§ã‚‚åˆ©ç”¨å¯èƒ½ã ãŒã€RFMONï¼ˆãƒ¢ãƒ‹ã‚¿ãƒ¢ãƒ¼ãƒ‰ï¼‰å¯¾å¿œãƒ‰ãƒ©ã‚¤ãƒã®æ•°ãŒã‚‚ã£ã¨ã‚‚å¤šãå˜åœ¨ã™ã‚‹ã“ã¨ã‹ã‚‰Linuxã§ã®åˆ©ç”¨ãŒæŽ¨å¥¨ã•ã‚Œã¦ã„ã‚‹ã€‚ ãƒ¢ãƒ‹ã‚¿ãƒ¢ãƒ¼ãƒ‰ã‚’åˆ©ç”¨ã™ã‚Œã°ã€ç¾åœ¨è‡ªåˆ†ãŒï¼ˆAPã‚’ä½¿ç”¨ã—ã¦ã„ã‚‹å ´åˆã«ã¯ï¼‰ä½¿ç”¨ä¸ã®APï¼ˆã‚¢ã‚¯ã‚»ã‚¹ãƒã‚¤ãƒ³ãƒˆï¼‰ã ã‘ã§ãªãKismetãŒç›£è¦–å¯èƒ½ãªã‚ã‚‰ã‚†ã‚‹ãƒ‘ã‚±ãƒƒãƒˆã®èª¿æŸ»ãŒå¯èƒ½ã«ãªã‚‹ãŸã‚ã€Kismetã‚’ãƒ•ãƒ«æ´»ç”¨ã™ã‚‹ãŸã‚ã«ã¯ãƒ¢ãƒ‹ã‚¿ãƒ¢ãƒ¼ãƒ‰ã®åˆ©ç”¨ãŒä¸å¯æ¬ ã ã€‚ã¾ãŸãƒ¢ãƒ‹ã‚¿ãƒ¢ãƒ¼ãƒ‰ã§ã¯å½¢è·¡ã‚’ã¾ã£ãŸãæ®‹ã•ãšã«ãƒ‘ã‚±ãƒƒãƒˆã‚’å—å‹•çš„ã«å‚å—/åŽé›†ã™ã‚‹ã“ã¨ãŒå¯èƒ½ã ãŒã€ãã®ã“ã¨ã¯è¦å¯Ÿã‚„ã‚¹ãƒ‘ã‚¤ã‚„æ‚ªæ„ã‚ã‚‹ãƒãƒƒã‚«ãƒ¼ã«ã¨ã£ã¦ã¨ã»ã¼åŒã˜ãã‚‰ã„
yagitoshiro 2008/07/15
network

kismet
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yagitoshiro 2008/07/11
ãŠã‚Œã¯æ™’ã™æ´¾

Law

network
ãƒªãƒ³ã‚¯
http://homepage3.nifty.com/sysaho/security.html
yagitoshiro 2007/12/27
network
ãƒªãƒ³ã‚¯
Geekãªãºãƒ¼ã˜ : Rubyãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°
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yagitoshiro 2007/11/30
network

Programming

Ruby

Tips
ãƒªãƒ³ã‚¯
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Linuxã®ã‚ˆã†ãªUNIXç³»OSã§ã¯ï¼Œãƒ•ã‚¡ã‚¤ãƒ«ã«å¯¾ã™ã‚‹æ“ä½œã¨åŒæ§˜ã«ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯é€šä¿¡ã‚’è¡Œã†ãŸã‚ã«ï¼Œã€Œã‚½ã‚±ãƒƒãƒˆã€ã¨å‘¼ã°ã‚Œã‚‹ä»•çµ„ã¿ã‚’ä½¿ã„ã¾ã™ã€‚ä»Šå›žã¯ã‚½ã‚±ãƒƒãƒˆã«ã¤ã„ã¦å¦ã³ã¾ã—ã‚‡ã†ã€‚ ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã¯ã€Œé›»åè¨ˆç®—æ©Ÿã€ã¨ã„ã†å’ŒåãŒç¤ºã™é€šã‚Šï¼Œæœ¬æ¥ã¯é«˜é€Ÿã«è¨ˆç®—ã™ã‚‹ãŸã‚ã®æ©Ÿæ¢°ã§ã—ãŸã€‚ã—ã‹ã—ï¼Œç¾åœ¨ã®ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã¯ï¼ŒWebãƒ–ãƒ©ã‚¦ã‚¸ãƒ³ã‚°ã‚„é›»åãƒ¡ãƒ¼ãƒ«ã®ã‚„ã‚Šå–ã‚Šãªã©ã«ä½¿ã‚ã‚Œã‚‹ã“ã¨ãŒå¤šãï¼Œãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã¨åˆ‡ã‚Šé›¢ã™ã“ã¨ãŒã§ãã¾ã›ã‚“ã€‚æœ€è¿‘ã¯ã€Œã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚’ä½¿ã†ã€ã“ã¨ã¨ã€Œãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚’ä½¿ã†ã“ã¨ã€ãŒã‹ãªã‚ŠåŒç¾©ã«ãªã£ã¦ã„ã‚‹ã®ã§ã¯ãªã„ã§ã—ã‚‡ã†ã‹ã€‚ ä»Šå›žã¯ï¼Œãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚’ä»‹ã—ãŸé€šä¿¡ã®åŸºç¤Žã«ãªã£ã¦ã„ã‚‹ã€Œã‚½ã‚±ãƒƒãƒˆã€ã¨ã„ã†æ¦‚å¿µã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ ãƒ‡ã‚£ã‚¹ã‚¯ãƒªãƒ—ã‚¿ã§ã‚¢ã‚¯ã‚»ã‚¹ãŒå˜ç´”ã« ã‚½ã‚±ãƒƒãƒˆã¯ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯é€šä¿¡ã«ç”¨ã„ã‚‹ãƒ•ã‚¡ã‚¤ãƒ«ãƒ»ãƒ‡ã‚£ã‚¹ã‚¯ãƒªãƒ—ã‚¿ï¼ˆfile descriptorï¼‰ã§ã™ã€‚ãã“ã§ï¼Œã‚½ã‚±ãƒƒãƒˆã®èª¬æ˜Žã«å…¥ã‚‹å‰ã«ï¼Œã‚ˆã‚Šä¸€èˆ¬çš„ãªãƒ•ã‚¡ã‚¤ãƒ«ãƒ»ãƒ‡ã‚£ã‚¹ã‚¯ãƒªãƒ—ã‚¿ã«ã¤
yagitoshiro 2007/11/08
Ruby

network

programming
ãƒªãƒ³ã‚¯
Wizard Bible
Wizard Bibleã¯2018å¹´4æœˆ22æ—¥24æ™‚ã«é–‰éŽ–ã—ã¾ã—ãŸã€‚ æŠ•ç¨¿è€…ã‚„èªè€…ã®çš†æ§˜ã€ã“ã‚Œã¾ã§ã®é–“æœ¬å½“ã«ã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã—ãŸã€‚ ã€2021å¹´6æœˆ27æ—¥æ›´æ–°ã€‘ Wizard Bibleã®è¨ç«‹ã‹ã‚‰é–‰éŽ–ã¾ã§ã«è‡³ã‚‹éŽç¨‹ã‚’è©³ç´°ã«è¿°ã¹ãŸæœ¬ãŒå‡ºã‚‹ã“ã¨ã«ãªã‚Šã¾ã—ãŸã€‚ ã€ŽWizard Bibleäº‹ä»¶ã‹ã‚‰è€ƒãˆã‚‹ã‚µã‚¤ãƒãƒ¼ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã€åŸ·ç†ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆ èˆˆå‘³ã®ã‚ã‚‹æ–¹ã¯æ˜¯éžèªã‚“ã§ã¿ã¦ãã ã•ã„ã€‚ Security Akademeiaã«æˆ»ã‚‹
yagitoshiro 2007/11/07
network

security

Tips
ãƒªãƒ³ã‚¯
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yagitoshiro 2007/05/23
Apache

network

Tips
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yagitoshiro 2007/05/21
management

network

performance

sar

sysstat
ãƒªãƒ³ã‚¯
VIVER
VIVERã¨ã¯ï¼Ÿ VIVERã¯ã€ï¼‘å°ã®ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚’CDã‚„DVDã€USBãƒ¡ãƒ¢ãƒªãªã©ã‹ã‚‰èµ·å‹•ã—ã€ç¶šã„ã¦ä»–ã®ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‚’æ¬¡ã€…ã«ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ–ãƒ¼ãƒˆã™ã‚‹ã“ã¨ã§ã€çž¬æ™‚ã«ãƒ‡ã‚£ã‚¹ã‚¯ãƒ¬ã‚¹ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚’æ§‹ç¯‰ã™ã‚‹ã‚·ã‚¹ãƒ†ãƒ ã§ã™ã€‚ VIVERã‚’ä½¿ã†ã¨ã€éžå¸¸ã«ç°¡å˜ãªæ‰‹é †ã§ã€ä»Šã‚ã‚‹Linuxã‚·ã‚¹ãƒ†ãƒ ã‚’USBãƒ¡ãƒ¢ãƒªã‚„ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ–ãƒ¼ãƒˆã‹ã‚‰ãƒ–ãƒ¼ãƒˆã§ãã‚‹ã‚ˆã†ã«ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ ç‰¹å®šã®Linuxãƒ‡ã‚£ã‚¹ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã«ã¯ä¾å˜ã—ã¦ã„ãªã„ã®ã§ã€CentOSã§ã‚‚openSUSEã§ã‚‚Debianã§ã‚‚Mandrivaã§ã‚‚ã€ã»ã¨ã‚“ã©ã®ãƒ‡ã‚£ã‚¹ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ãƒ‡ã‚£ã‚¹ã‚¯ãƒ¬ã‚¹ãƒ–ãƒ¼ãƒˆã•ã›ã‚‰ã‚Œã¾ã™ã€‚ ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ãƒ–ãƒ¼ãƒˆã«ã¯NFSã‚’ä½¿ã„ã¾ã›ã‚“ã€‚åˆ†æ•£å¤šé‡åŒ–å…±æœ‰ãƒ–ãƒãƒƒã‚¯ãƒ‡ãƒã‚¤ã‚¹V-FIELDã‚’ä½¿ã„ã¾ã™ã€‚ ã‚‚ã£ã¨è©³ã—ã ãƒ‡ãƒ¢ãƒ ãƒ¼ãƒ“ãƒ¼ã‚’è¦‹ã‚‹
yagitoshiro 2007/05/21
Linux

network
ãƒªãƒ³ã‚¯
I, newbie Â» tcpdumpã‚’å’æ¥ã—ãŸã‚‰
tcpdumpã¯ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã•ã‚Œã¦ã„ã‚‹ã“ã¨ãŒå¤šã„ã®ã§ã€ç¿’å¾—å¿…é ˆãƒ„ãƒ¼ãƒ«ã®ã²ã¨ã¤ãªã‚ã‘ã§ã™ãŒã€filterãŒè²§å¼±ãªã®ãŒé›£ç‚¹ã€‚ã‚ã‚‹ãƒ›ã‚¹ãƒˆã¨ã®é€šä¿¡ã ã‘ã€ã¨ã‹å˜ç´”ãªfilterã«æº€è¶³ã§ããªããªã£ãŸã‚‰tsharkã§ã™ã‚ˆã€‚tsharkã¯ã‚ˆã‚Šä¸Šä½ã®ãƒ¬ã‚¤ãƒ¤ã‚‚display filterã«æ›¸ã‘ã‚‹(capture filterã¯pcapã ã‘ã©)ã€‚ãŸã ã—ã€æ£è¦è¡¨ç¾ã§filterã¯æŽ›ã‘ãªã„ã€‚ãã†ã„ã†ã®ã¯snortã§é ‘å¼µã£ã¦ã‚‚ã‚‰ã„ã¾ã—ã‚‡ã†ã€‚ mixi.jpã®åå‰è§£æ±ºã‚’å¼•ã£ã‹ã‘ã‚‹ãªã‚‰ã€ # tshark -i ngeth0 -n -R 'dns.qry.name == "mixi.jp"' -s 1515 -w mixi.lpc vlan and port 53 ã“ã“ã‹ã‚‰ã€-w -ã§pipeçµŒç”±ã§argusã«é£Ÿã‚ã›ã¦ã€ragraphã«çªã£è¾¼ã‚ã°ã€DNSã®é€šä¿¡ã‚’rrdtoolã§ã‚°ãƒ©ãƒ•åŒ–ã§ãã‚‹ã‚ˆãã¨ã‹ã€loggerä½¿ã£ã¦s
yagitoshiro 2007/04/28
network

software

unix
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ZABBIX-JP - Un-Official Support Page
ã“ã®ã‚µã‚¤ãƒˆã¯çµ±åˆç›£è¦–ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢"Zabbix"ã®éžå…¬å¼æ—¥æœ¬ã‚³ãƒŸãƒ¥ãƒ‹ãƒ†ã‚£ã‚µã‚¤ãƒˆã§ã™ã€‚æ—¥æœ¬ã«ãŠã‘ã‚‹Zabbixã®æ™®åŠã‚’ç›®æ¨™ã¨ã—ã¦ã„ã¾ã™ã€‚ Zabbixã¯Zabbix LLCã«ã‚ˆã‚Šé–‹ç™ºã•ã‚Œã€æ—¥æœ¬å›½å†…ã®ã‚ªãƒ•ã‚£ã‚·ãƒ£ãƒ«ã‚µãƒãƒ¼ãƒˆã¯Zabbix JapanãŒæä¾›ã—ã¦ã„ã¾ã™ã€‚ Zabbixã‚ªãƒ•ã‚£ã‚·ãƒ£ãƒ«ãƒªãƒªãƒ¼ã‚¹(ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰) 6.2.3 (2022/9/21) [ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰] : [ãƒªãƒªãƒ¼ã‚¹ãƒŽãƒ¼ãƒˆ] 6.0.9 (2022/9/21) [ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰] : [ãƒªãƒªãƒ¼ã‚¹ãƒŽãƒ¼ãƒˆ] 5.0.28 (2022/9/19) [ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰] : [ãƒªãƒªãƒ¼ã‚¹ãƒŽãƒ¼ãƒˆ] 4.0.44 (2022/9/19) [ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰] : [ãƒªãƒªãƒ¼ã‚¹ãƒŽãƒ¼ãƒˆ] Zabbixã‚ªãƒ•ã‚£ã‚·ãƒ£ãƒ«ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ (rpm, deb) Zabbix LLCã®Zabbix 4.0ã€5.0ã€6.0ã‚ªãƒ•ã‚£ã‚·ãƒ£ãƒ«RPM(RHEL, CentOS, SUSE
yagitoshiro 2006/07/05
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