é¢é£è¨äº Wi-Fiã«ã¼ã¿ã¼ã®è¨å®ç¢ºèªã£ã¦ã©ããè¦ãã°ããã®ï¼ãè¦è¦åºã®æ³¨æåèµ·ã§å°æã®å£°ããããã¡ãã¼ã«èãã è¦è¦åºã¯å®¶åºç¨Wi-Fiã«ã¼ã¿ã¼ã®ä¸æ£å©ç¨ã«ã¤ãã¦ããè¦è¦ãã®ãªãè¨å®å¤æ´ããªããã¦ããªããå®æ確èªããæ¨å¥¨ãããããTwitterä¸ã§ã¯ãè¨å®ãªãã¦ãã¡ãã¡è¦ãã¦ãããªãããªã©å°æãã声ãããããã¡ãã¼ã«å ·ä½çãªå¯¾çãèãã 帰çå ã®Wi-Fiã«ã¼ã¿ã¼ãã»ãã¥ãªãã£ã¯å¤§ä¸å¤«ï¼ãGWä¸ã«ç¢ºèªããããè¦è¦åºã注æåèµ· ãµã¤ãã¼æ»æã¸ã®å¯¾çãå¼ã³æãããµã¤ãã¼ã»ãã¥ãªãã£é£çã¯ãWi-Fiã«ã¼ã¿ã¼ã¸ã®ä¸æ£ã¢ã¯ã»ã¹ãé²ãããã´ã¼ã«ãã³ã¦ã£ã¼ã¯ä¸ã«ç¢ºèªãã¹ããã¤ã³ããç´¹ä»ããã ãã³ãã£ãã¡ã³ãçææ¥ã¯éå¹æã¨ã¡ã¼ã«ã¼ã注æåèµ·ããæ¿¡ãã¿ãªã«ã¨ã®ä½µç¨ãã æ軽ã«å¤ã§ã使ããããã³ãã£ãã¡ã³ãï¼æºå¸¯åæ風æ©ï¼ã¯æ°æ¸©35â以ä¸ã«ãªãã¨éå¹æã«ãªãã¨ã¨ã¬ã³ã ã注æåèµ·ããã ã¨ã¬ã³ã ãâã¹ã
ä»å確èªãããææ³ã¯ãä¸è¬å®¶åºã§å©ç¨ããã¦ããã«ã¼ã¿ã¼ãããµã¤ãã¼æ»æè ãå¤é¨ããä¸æ£ã«æä½ãã¦æè¼æ©è½ãæå¹åãããã®ã§ãä¸åº¦è¨å®ãå¤æ´ãããã¨å¾æ¥ã®å¯¾çã®ã¿ã§ã¯ä¸æ£ãªç¶æ ã¯è§£æ¶ããããæ°¸ç¶çã«ä¸æ£å©ç¨å¯è½ãªç¶æ ã¨ãªã£ã¦ãã¾ãææ³ã§ãã å¾æ¥ã®å¯¾çã§ãã åæè¨å®ã®åç´ãªIDããã¹ã¯ã¼ãã¯å¤æ´ããã常ã«ææ°ã®ãã¡ã¼ã ã¦ã§ã¢ã使ç¨ããããµãã¼ããçµäºããã«ã¼ã¿ã¼ã¯è²·ãæ¿ããæ¤è¨ãããã«å ããæ°ããªå¯¾çã¨ãã¦ã è¦è¦ãã®ãªãè¨å®å¤æ´ããªããã¦ããªããå®æçã«ç¢ºèªãããããé¡ããã¾ãã å ·ä½çã«ã¯ãã«ã¼ã¿ã¼ã®ç®¡çç»é¢ã§æ¬¡ã®äºé ãå®æçã«ç¢ºèªããåé¡ããã£ãå ´åã«ã¯ããã®é½åº¦æ¯æ£ãããããé¡ããã¾ãã è¦è¦ãã®ãªããVPNæ©è½è¨å®ãããDDNSæ©è½è¨å®ãããã¤ã³ã¿ã¼ãããï¼å¤é¨ï¼ããã«ã¼ã¿ã¼ã®ç®¡çç»é¢ã¸ã®æ¥ç¶è¨å®ãã®æå¹åãããã¦ããªãã確èªãããVPNæ©è½è¨å®ã«è¦è¦ãã®ãªãVPNã¢ã«ã¦ã³ãã追
è¦è¦åºã¯3æ28æ¥ã家åºç¨Wi-Fiã«ã¼ã¿ã¼ã®ä¸æ£å©ç¨ã«é¢ãã注æåèµ·ãçºè¡¨ãããå¾æ¥ã®å¯¾çã®ã¿ã§ã¯å¯¾å¿ã§ããªããµã¤ãã¼æ»æã観測ããã¨ãããæ°ããªå¯¾çã¨ãã¦ãè¦è¦ãã®ãªãè¨å®å¤æ´ããªããã¦ããªããå®æçã«ç¢ºèªããããã¨ãæ¨å¥¨ãã¦ããã æ°ãã«ç¢ºèªãããµã¤ãã¼æ»æã¯ãæ»æè ãä¸è¬å®¶åºã®ã«ã¼ã¿ã¼ãå¤é¨ããä¸æ£ã«æä½ãã¦æè¼æ©è½ãæå¹åããã¨ãããã®ãä¸åº¦è¨å®ãå¤æ´ãããã¨ãå¾æ¥ã®å¯¾çã®ã¿ã§ã¯ä¸æ£ãªç¶æ ã解æ¶ã§ãããæ°¸ç¶çã«ä¸æ£å©ç¨ã§ããç¶æ ã«ãªãã¨ããã ãã®æ»æã«å¯¾ãã¦ã¯ãå¾æ¥ã®ãµã¤ãã¼ã»ãã¥ãªãã£å¯¾çã¨ãã¦å§ãã¦ãããåæè¨å®ã®åç´ãªIDããã¹ã¯ã¼ãã¯å¤æ´ãããã常ã«ææ°ã®ãã¡ã¼ã ã¦ã§ã¢ã使ç¨ãããããµãã¼ããçµäºããã«ã¼ã¿ã¼ã¯è²·ãæ¿ããæ¤è¨ãããã§ã¯å¯¾å¿ãä¸ååã§ããã¨ãããè¦è¦åºã¯æ°ãã«ãè¦è¦ãã®ãªãè¨å®å¤æ´ããªããã¦ããªããå®æçã«ç¢ºèªããããã¨ãæ¨å¥¨ãã¦ããã å ·ä½çã«ã¯ãã«ã¼ã¿
ã«ã¼ã¿ã¼ãå®¶å ·ã®å¾ãã«é ãã¦ãããï¼ Wi-Fiã«ã¼ã¿ã¼ã¯è¦éãã®è¯ãå ´æã«ç½®ãæ¹ãããã¨è¨ã£ã¦ããé¨å±ã®ãã¶ã¤ã³ã¨åããªããªã©ã®çç±ã§è¦ããªãå ´æã«ç½®ãã¦ããããã¨ãã人ãããã ããããã¬ãã®è£ã«é ãã¨ãã©ããããå½±é¿ããããã試ããï¼å³1ï¼ã
æ¢å ±ã®éããæ¥æ¬å½å ã§ã9æ2æ¥ãã6GHz帯ã®ç¡ç·LANãå©ç¨ã§ããããã«ãªã£ããåæ¥ä»¥éã«èªè¨¼ãåå¾ãã6GHz帯ã«å¯¾å¿ããç¡ç·LANæ©å¨ã§ã¯ãå帯åã§âåæ³çã«âéä¿¡ãè¡ããã âãWi-Fi 6Eãã¤ãã«è§£ç¦ââç·åçã6GHz帯ã®ç¡ç·LANå©ç¨ãèªããç令ãå ¬å¸ãå³æ¥æ½è¡ âãããã解ç¦ï¼ãWi-Fi 6Eãã¯ä½ããããï¼ããWi-Fi 6ãã¨ã®éãã¯ï¼ãã©ããªã¢ãã«ãããï¼ ä¸æ¹ã§ãåæ¥ä»¥åã«èªè¨¼ãåå¾ããç¡ç·LANæ©å¨ã¯ããã¼ãã¦ã§ã¢çã«å¯¾å¿ãã¦ãã¦ããå½å ã«ããã¦6GHz帯ã§éä¿¡ã§ããªãããã«ãªã£ã¦ãããæããã¦ãæ¢åã®6GHz帯対å¿æ©å¨ã§6GHz帯ãå©ç¨ã§ããããã«ãªãã®ã ãããâ¦â¦ï¼ ãæ´æ°ï¼9æ18æ¥11æ45åããThinkPad X13 Gen 3ï¼Intelã¢ãã«ï¼ããåèã«ãå¿ è¦ã¨ãªãæç¶ãã«ã¤ãã¦è§£èª¬ããè¨è¿°ã追è¨ãã¾ããï¼åçã®å·®ãæ¿ãã¨è¿½å ãåããã¦å®æ½
å¹³ç´ ã¯ãå¼ç¤¾è£½åããæ顧ããã ãã¾ãã¦èª ã«ãããã¨ããããã¾ãã å¼ç¤¾ã2005å¹´ããã³2008å¹´ã«çºå£²ãããããã¯ã¼ã¯æ©å¨ããã³ãã³ãã¼Wi-Fi USBã³ãã¯ã¿ï¼NTR-010ï¼ãããã³ãã³ãã¼Wi-Fiãããã¯ã¼ã¯ã¢ããã¿ï¼WAP-001ï¼ãã«ã¤ãã¾ãã¦ãã»ãã¥ãªãã£ä¿è·ã®è¦³ç¹ã§ä½¿ç¨ãä¸æ¢ããå¸è²©ã®ãããã¯ã¼ã¯æ©å¨ãªã©ã«åãæ¿ãã¦ããã ããããé¡ãç³ãä¸ãã¾ãã
ããã«ã¡ã¯ãè¼ç°ã§ãã ä»åã¯CODE BLUE 2020ã§è¡ããã以ä¸ã®ã»ãã·ã§ã³ã®ã¬ãã¼ãã§ãã Kr00kï¼æ·±å»ãªèå¼±æ§ãæ°åå以ä¸ã®Wi-Fiããã¤ã¹ã®æå·åã«å½±é¿ ãããããç¹å®ããKr00kï¼CVE-2019-15126ï¼ã¨ã¯ãããã¾ã§ç¥ããã¦ããªãã£ãèå¼±æ§ã§ãå¤æ°ã®Wi-Fi対å¿ããã¤ã¹ã«ä½¿ç¨ãããããããæ±ãã¦ãããã®ã ãå ·ä½çã«ã¯Broadcomã¨Cypressã®Wi-Fiãããï¼ããããä»ã®ã¡ã¼ã«ã¼ã該å½ããï¼ã§çºè¦ãããã®ã§ãããªã¼ã«ã»ã¼ãæå·åãã¼ï¼all-zero encryption keyï¼ãã使ç¨ããWPA2ãããã¯ã¼ã¯ã§ã¯æå·åãã±ãããèå¼±ã§ããã¨ãããã®ã ãæ»æãæåããã¨ãæ»æè ã¯ä¸é¨ã®ç¡ç·ãããã¯ã¼ã¯ãã±ããã復å·ã§ããããã«ãªããèå¼±ãªãããã¯AppleãSamsungãGoogleãAmazonã»ãå¤æ°ã®ããã¤ã¹ã§ä½¿ç¨ããã¦ãããããå½±é¿ãå
ãWi-Fiãã¨èãã¦ãä½ãæãæµ®ãã¹ã¾ããï¼ ITæ©å¨ã«è©³ãããªã人ã¨è©±ãéãèªèã®éãã«é©ããããè¨èãããã¤ãããã ç¹ã«æè¿ãSNSãªã©ã§ã話é¡ã«ãªããã¨ãå¤ãã®ãããWi-Fiï¼ã¯ã¤ãã¡ã¤ï¼ãã¨ããè¨èãèãã¦æãæµ®ãã¹ããã®ã®éãã ã ã©ãéãã®ãã«ã¤ãã¦ã¯ãããã¦ã®ã¡ã»ã©è¿°ã¹ããã¨ã«ãããããã®ãWi-Fiãã®æãæ¹ã®éãã¯ãåã«æè¡ãç解ãã¦ããï¼ãã¦ããªãã®è©±ã«ã¨ã©ã¾ãããçæ´»ã®ãªãã§éä¿¡ãã©ã®ãããªããã¡ã§åå¨ãã浸éãã¦ããããã¨ããæµãã¨èª²é¡ãè¦ãã¦ããã ãã¯ãè³ã«ããªãæ¥ããªããããæ¥å¸¸ã«æµ¸éããWi-Fiã«ã¤ãã¦ãä»åã¯ããããã¦æ·±æããã¦ã¿ããã¨ã«ãããã ãWi-Fiãã®æ£ããæå³ãç¥ã£ã¦ãã¾ããï¼ ã¾ãã質åãããââãWi-Fiãã¨ã¯ãªãã ããï¼ ããªããªããã©ãçãã¾ããï¼ ã¡ãªã¿ã«ãæ£ç¢ºãªå®ç¾©ã¯æ¬¡ã®ãããªãã®ã«ãªãã ãç¡ç·ã使ã£ã¦æ©å¨éã®éä¿¡ãã
ã¬ã¤ãã©ã¤ã³ã¸ã®ãªã³ã¯ã¯ãPDFã§ã¯ãªããæ¬ãã¼ã¸ï¼https://www.soumu.go.jp/main_sosiki/cybersecurity/wi-fi/ï¼ã¸ã®ãªã³ã¯ã¨ãã¦ããã ãã¾ããããé¡ããã¾ãã èªå® Wi-Fiå©ç¨è åã ç°¡æããã¥ã¢ã«ï¼ä»¤å6å¹´3æçï¼ ç·åçã§ã¯ãèªå® Wi-Fiã®å©ç¨è ã«å¯¾ããå®å ¨ãªèªå® Wi-Fiã®å©ç¨ã®ããã«å¿ è¦ãªã»ãã¥ãªãã£å¯¾ççã«é¢ããç解ãæ·±ãã¦ããã ããã¨ãç®çã¨ããã¬ã¤ãã©ã¤ã³ã¨ãã¦ããèªå® Wi-Fiå©ç¨è åã ç°¡æããã¥ã¢ã«ããä½æãã¦ãã¾ãã ã»ãã¥ãªãã£å¯¾çã®3ã¤ã®ãã¤ã³ãã¨ãã¦ã ãã¤ã³ã1 ã»ãã¥ãªãã£æ¹å¼ ã¯ãWPA2ã¾ãã¯WPA3ããé¸æããã ãã¤ã³ã2 ãã¹ã¯ã¼ãã¯ç¬¬ä¸è ã«æ¨æ¸¬ããã«ãããã®ã«ããã ãã¤ã³ã3 ãã¡ã¼ã ã¦ã§ã¢ãææ°ã®ç¶æ ã«ããã ã示ãã¨ã¨ãã«ããããããã解説ãå ãã¦ãã¾ãã ãªãæ¬ããã¥ã¢ã«ã¯åç»ã§ã
ç¡ç·LANã®æ°ããè¦æ ¼Wi-Fi 6ï¼IEEE 802.11axï¼ã§ã¯ã2.4GHz帯ãå©ç¨ã§ãããå¤é¨ããã®é»æ³¢å¹²æ¸ã®å½±é¿ãåãããããã®å¨æ³¢æ°å¸¯ã§ã©ãã»ã©ã®ã¹ã«ã¼ããããåºãã®ããã¾ãWi-Fi 6ã«å¯¾å¿ããã¢ã¯ã»ã¹ãã¤ã³ãï¼APï¼ããã¡æ©ãå°å ¥ããã°ã1ä¸ä»£åã®IEEE 802.11ac対å¿ç«¯æ«ã¨ã®æ··å¨ç°å¢ãæ³å®ããããããããã¨ããæ°æ§ã®è¦æ ¼ã®ç«¯æ«ãäºãã«æªå½±é¿ãä¸ããªãã ããããå®é¨ã§ç¢ºèªãã¦ã¿ããã å®é¨ã2.4GHz帯 Wi-Fi 6ã§ã¯ã802.11acã§é対å¿ã ã£ã2.4GHz帯ã«å¯¾å¿ããã2.4GHz帯ã¨è¨ãã°ãBluetoothãé»åã¬ã³ã¸ã¨ãã£ãç¡ç·LAN以å¤ã®æ©å¨ã§ãããå©ç¨ãããå¨æ³¢æ°å¸¯ãªã®ã§é»æ³¢å¹²æ¸ããããããã®ããã使ãç©ã«ãªããªãã¨ããã¤ã¡ã¼ã¸ãå¼·ãã802.11acã§é対å¿ã ã£ãã®ããå©ç¨ãã«ããããã ããã ãã APã2.4GHz帯ã¨5GHz帯ã®ä¸¡æ¹ã«
Twitterãã©ãã¼&æ¡ä»¶ä»ããã¤ã¼ãã§ãããªã¼ããã¬ãããã¿ããæ½é¸ã§20åã«ãã¬ã¼ã³ãï¼ å¿åæéã¯2019/11/29ï½2019/12/31ã¾ã§ã詳細ã¯ãã¡ããã覧ãã ããã ä»ãããã¤ã¼ããããªããã¡ãâããã©ãã¼ããå¿ããªãï¼ ãIIJ 2019 TECHã¢ããã³ãã«ã¬ã³ãã¼ 12/14ï¼åï¼ã®è¨äºã§ãã ããã«ã¡ã¯ãIIJ éåã§ãã æ¬æ¥ã¯ãç¡ç·LAN 5GHz帯ã§ã®DFSã®çºçç¶æ³ãå¯è¦åãã¦ã¿ããã¨ããã話ããã¾ãã ã¯ããã« ç¡ç·LANãéç¨ãã¦ããã¨æ°ã«ãªãã®ã¯ãå¤æ¥ã¬ã¼ãã¼æ³¢ã«ããå¼ãèµ·ããããDFSãããã¦ããã«èµ·å ãã¦APãè¡ããã£ãã«ã®ç§»åã§ãã ãä»èªåãããå ´æã§ãç¡ç·LANã®DFSãå¼ãèµ·ãããããªã¬ã¼ãã¼ã¯ã©ããããæã¡è¾¼ã¾ãã¦ããã®ãããï¼ãã¨ãããªçåããµã¨æ²¸ãã¦ããã®ã§ããã®ã¯è©¦ãã«ã¨å®éã«æ¸¬ã£ã¦ã¿ããã¨ã«ãã¾ããã ç¡ç·LANã¨DFSã«ã¤ãã¦
ãªãªã¼ã¹ãé害æ å ±ãªã©ã®ãµã¼ãã¹ã®ãç¥ãã
ææ°ã®äººæ°ã¨ã³ããªã¼ã®é ä¿¡
å¦çãå®è¡ä¸ã§ã
j次ã®ããã¯ãã¼ã¯
kåã®ããã¯ãã¼ã¯
lãã¨ã§èªã
eã³ã¡ã³ãä¸è¦§ãéã
oãã¼ã¸ãéã
{{#tags}}- {{label}}
{{/tags}}