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BCP38ã«é–¢ã™ã‚‹ihagã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (4)

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ã‚¤ãƒ³ã‚°ãƒ¬ã‚¹ãƒ•ã‚£ãƒ«ã‚¿ãƒªãƒ³ã‚°(ingress filtering)ã¨ã¯ã€ é€ä¿¡å…ƒã‚’å½è£…ã—ãŸIPãƒ‘ã‚±ãƒƒãƒˆã®è»¢é€ã‚’é˜²ãæ‰‹æ³•ã®ä¸€ã¤ã§ã€ RFC2827 (BCP 38)ã§è§£èª¬ã•ã‚Œã¦ã„ã¾ã™ã€‚ ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã§ã®ã‚µãƒ¼ãƒ“ã‚¹å¦¨å®³(DoS)æ”»æ’ƒæ‰‹æ³•ã«ã¯ã€ IPãƒ‘ã‚±ãƒƒãƒˆã®é€ä¿¡å…ƒã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’å½è£…ã—ã¦è¡Œã†ã‚‚ã®ãŒã‚ã‚Šã¾ã™ã€‚ ä¾‹ãˆã°ã€TCP SYNãƒ•ãƒ©ãƒƒãƒ‡ã‚£ãƒ³ã‚°(TCP SYN flooding)ã¨å‘¼ã°ã‚Œã‚‹æ”»æ’ƒã§ã¯ã€ æ”»æ’ƒè€…ã¯é€ä¿¡å…ƒã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’å½è£…ã—ãŸSYNãƒ•ãƒ©ã‚°ã®ç«‹ã£ãŸTCPãƒ‘ã‚±ãƒƒãƒˆã‚’ã€ æ¨™çš„ã¨ãªã‚‹ãƒ›ã‚¹ãƒˆã«é€ä¿¡ã—ã¾ã™ã€‚ ãƒ‘ã‚±ãƒƒãƒˆã‚’å—ã‘å–ã£ãŸæ¨™çš„ãƒ›ã‚¹ãƒˆã¯SYN/ACKãƒ•ãƒ©ã‚°ã‚’ç«‹ã¦ãŸãƒ‘ã‚±ãƒƒãƒˆã‚’é€ä¿¡å…ƒã«è¿”é€ã—ã‚ˆã†ã¨ã—ã¾ã™ãŒã€ é€ä¿¡å…ƒã‚¢ãƒ‰ãƒ¬ã‚¹ãŒå½è£…ã•ã‚Œã¦ã„ã‚‹ãŸã‚ã€æ£ã—ãè¿”é€ã‚’å®Œäº†ã™ã‚‹ã“ã¨ãŒã§ãã¾ã›ã‚“ã€‚ ã‚‚ã—ã€ã“ã®æ”»æ’ƒã§å¤šæ•°ã®å½è£…ãƒ‘ã‚±ãƒƒãƒˆã‚’å—ã‘å–ã£ãŸå ´åˆã€ æ¨™çš„ãƒ›ã‚¹ãƒˆã¯TCPã®æŽ¥ç¶šå¾…ã¡ç‰ã®å‡¦ç†ã§CPUã‚„ãƒ¡ãƒ¢ãƒªç‰ã®ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿è³‡æºã‚’
ihag 2014/01/17
network

BCP38
ãƒªãƒ³ã‚¯
Network Ingress Filtering
ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ WG Request for Commentsï¼š 2827 å»ƒæ¢ï¼š 2267 BCPï¼š 38 åˆ†é¡žï¼š ãƒ™ã‚¹ãƒˆã‚«ãƒ¬ãƒ³ãƒˆãƒ—ãƒ©ã‚¯ãƒ†ã‚£ã‚¹ P. Ferguson Cisco Systems, Inc. D. Senie Amaranth Networks Inc. 2000å¹´ 5æœˆ English ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®ã‚¤ãƒ³ã‚°ãƒ¬ã‚¹ãƒ•ã‚£ãƒ«ã‚¿ãƒªãƒ³ã‚°ï¼š (Network Ingress Filteringï¼š) ç™ºä¿¡å…ƒ IP ã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’å½ã£ãŸã‚µãƒ¼ãƒ“ã‚¹å¦¨å®³æ”»æ’ƒã‚’ãã˜ã (Defeating Denial of Service Attacks which employ IP Source Address Spoofing) ã“ã®ãƒ¡ãƒ¢ã®ä½ç½®ã¥ã‘ æœ¬æ›¸ã¯ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã®ã€Œç¾æ™‚ç‚¹ã«ãŠã‘ã‚‹æœ€å–„ã®å®Ÿè·µï¼ˆ Best Current Practices ï¼‰ã€ã‚’ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã‚³ãƒŸãƒ¥ãƒ‹ãƒ†ã‚£ã®ãŸã‚ã«è¦å®šã—ã€æ”¹å–„ã®ãŸã‚ã«è°
ihag 2014/01/14
BCP

BCP38

network
ãƒªãƒ³ã‚¯
Ingress Filtering for Multihomed Networks
ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ WG Request for Commentsï¼š 3704 æ›´æ–°ï¼š 2827 BCPï¼š 84 åˆ†é¡žï¼š ãƒ™ã‚¹ãƒˆã‚«ãƒ¬ãƒ³ãƒˆãƒ—ãƒ©ã‚¯ãƒ†ã‚£ã‚¹ English ï¼ˆæº–å‚™ä¸ï¼‰ ãƒžãƒ«ãƒãƒ›ãƒ¼ãƒ ã•ã‚ŒãŸãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®ãŸã‚ã®ã‚¤ãƒ³ã‚°ãƒ¬ã‚¹ãƒ•ã‚£ãƒ«ã‚¿ãƒªãƒ³ã‚° (Ingress Filtering for Multihomed Networks) ã“ã®ãƒ¡ãƒ¢ã®ä½ç½®ã¥ã‘ ã“ã®æ–‡æ›¸ã¯ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã®ã€Œç¾æ™‚ç‚¹ã«ãŠã‘ã‚‹æœ€å–„ã®å®Ÿè·µï¼ˆãƒ™ã‚¹ãƒˆã‚«ãƒ¬ãƒ³ãƒˆãƒ—ãƒ©ã‚¯ãƒ†ã‚£ã‚¹ï¼‰ã€ã‚’ç¤ºã™ã‚‚ã®ã§ã‚ã‚Šã€æ”¹å–„ã™ã‚‹ãŸã‚ã«è°è«–ã¨ç¤ºå”†ã‚’æ±‚ã‚ã‚‹ã‚‚ã®ã§ã™ã€‚ã“ã®ãƒ¡ãƒ¢ã®é…å¸ƒã«åˆ¶é™ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ è‘—ä½œæ¨©è¡¨è¨˜ Copyright (C) The Internet Society (2004).Â All Rights Reserved. è¦æ—¨ BCP 38, RFC 2827 ã¯ã€ å½è£…ã•ã‚ŒãŸã‚¢ãƒ‰ãƒ¬ã‚¹ã§ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã‚’æ‹’å¦ã™ã‚‹ã“ã¨ã«ã‚ˆã£ã¦ã€åˆ†æ•£
ihag 2014/01/14
BCP

BCP38

BCP84

network
ãƒªãƒ³ã‚¯
BCP38
BCP38 Matsuzaki â€˜mazâ€™ Yoshinobu <maz@iij.ad.jp> 2013/4/19 maz@iij.ad.jp 1 BCP38æ¦‚è¦ â€¢ IETFã®Best Current Practice, RFC2827 â€“ http://tools.ietf.org/html/bcp38 â€¢ é€ä¿¡å…ƒIPã‚¢ãƒ‰ãƒ¬ã‚¹ã®è©ç§°ã‚’é˜²ã â€“ è©ç§°ã‚’åˆ©ç”¨ã—ãŸæ”»æ’ƒã®å½±éŸ¿ã‚’ä½Žæ¸›ã§ãã‚‹ â€“ æ”»æ’ƒå…ƒã‚’è¿½è·¡ã§ãã‚‹ã‚ˆã†ã«ãªã‚‹ BCP38å®Ÿè£… â€¢ ãƒ‘ã‚±ãƒƒãƒˆãƒ•ã‚£ãƒ«ã‚¿ â€“ è¨±å¯ã™ã‚‹é€ä¿¡å…ƒIPã‚¢ãƒ‰ãƒ¬ã‚¹ã§ã‚ã‚Œã°é€šéŽã•ã›ã‚‹ â€“ ãã‚Œä»¥å¤–ã®ãƒ‘ã‚±ãƒƒãƒˆã‚’ç ´æ£„ â€¢ uRPF strictãƒ¢ãƒ¼ãƒ‰ â€“ çµŒè·¯æƒ…å ±ã‚’åˆ©ç”¨ã—ã¦é€ä¿¡å…ƒIPã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’ãƒã‚§ãƒƒã‚¯ â€“ ãã®ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã«å‘ã„ã¦ã„ã‚‹çµŒè·¯ã«å¯¾å¿œã™ã‚‹é€ ä¿¡å…ƒIPã‚¢ãƒ‰ãƒ¬ã‚¹ã§ã‚ã‚Œã°é€šéŽã•ã›ã‚‹ â€“ è¨å®šä¾‹ã¨ã‹ã¯ â€¢ http://www.janog.gr.jp/meeting/j
ihag 2014/01/14
BCP

BCP38

network

Source Address Validation
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Network Ingress Filtering

Ingress Filtering for Multihomed Networks

BCP38

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