http://www.hackerschool.org/HS_Boards/zboard.php?id=Free_Lectures&no=1672 [º¹»ç]
Áö³¹øÀÇ 802.1xÀÇ ÀÎÁõ±â¼ú¿¡ À̾î¼
À̹ø¿¡´Â 802.11i¶ó´Â ¾ÏÈ£È ¹æ½Ä¿¡ ´ëÇØ ¼³¸íÇØ µå¸®°Ú½À´Ï´Ù.
------------------------------------------------------------------------------------------------
MODE WPA WPA2
------------------------------------------------------------------------------------------------
Authentication: Authentication:
Enterprise Mode IEEE 802.1X/EAP IEEE 802.1X/EAP
(Business / Education
Government) Encryption: Encryption:
TKIP/MIC AES/CCMP
-----------------------------------------------------------------------------------------------
Authentication: Authentication:
Personal Mode PSK PSK
(SOHO / Home and
Personal) Encryption: Encryption:
TKIP/MIC AES/CCMP
-----------------------------------------------------------------------------------------------
¸ÕÀú °ÑÀ» »ì¦ º¸°Ú½À´Ï´Ù.
802.11¿¡´Â 802.1xó·³ IEEE ±Ô°ÝÀÌ 2°¡Áö°¡ ÀÖ½À´Ï´Ù.
WPA ¹öÁ¯ 1°ú ¹öÁ¯ 2Àä.ÀÌ´Â ¾ÏÈ£È ¹æ½Ä¿¡ µû¶ó ºÐ·ùÇѰŶø´Ï´Ù. ´ç¿¬È÷ ¹öÁ¯ 2°¡ ´õ °·ÂÇÑ ¹æ½ÄÀÌ°ÚÁÒ?
¶ÇÇÑ 802.11i´Â enterprise mode¿Í personal mode·Î ±ÔÁ¤µÇ¾îÀִµ¥
¿£ÅÍÇÁ¶óÀÌÁî ¸ðµå¶õ, ¸» ±×´ë·Î ±â¾÷°°Àº °÷¿¡¼ »ç¿ëÇÒ Á¤µµÀÇ ¾ÏÈ£È ¸ðµå°í
ÆÛ½º³Î ¸ðµå¶õ ¼ÒÈ£ ¶Ç´Â °³ÀÎÀÌ ¾²´Â ¾ÏÈ£È ¸ðµå¶ø´Ï´Ù.
±×·³ ÀÌÁ¦ ¾ÏÈ£È ¹æ½Ä¿¡ ´ëÇØ µé¿©´Ù º¼±î¿ä?
802.11iÀÇ WPA ¹öÁ¯ 1ÀÇ ¾ÏÈ£È ¹æ½ÄÀº TKIP(Temporal Key Integrity Protocol)À» »ç¿ëÇÕ´Ï´Ù.
TKIPÀº ±×³É ´Ü¼øÈ÷ Ãë¾àÇÑ ¾ÏÈ£È ¹æ½ÄÀ̶ó°í »ý°¢ÇϽʽÿÀ.
ÇÏÁö¸¸ WPA ¹öÁ¯ 2¿¡¼´Â ´Ù¸¥¹æ½ÄÀÎ CCMP(Counter mode with CBC-MAC Protocol)¾ÏÈ£È ¹æ½ÄÀ» »ç¿ëÇϴµ¥¿ä
´ç¿¬È÷ ¹öÁ¯ÀÌ ¿Ã¶ó°¬À¸´Ï ÀÌÀüÀÇ Ãë¾àÁ¡À» º¸¿ÏÇß°ÚÁÒ?
±×·¡¼ CCMP´Â º¸´Ù °·ÂÇÑ ±¸Á¶¸¦ Áö´Ï°í ÀÖ½À´Ï´Ù.
°á·ÐÀûÀ¸·Î ¸»¾¸µå¸®ÀÚ¸é ±â¾÷¸ðµå WPA¹öÁ¯1Àº ÀÎÁõ°úÁ¤¿¡¼ 802.1x/EAPÀÇ ÀÎÁõ°È·Î ÀÎÇؼ ±úÁöÁú ¾Ê½À´Ï´Ù.
ÇÏÁö¸¸ °³ÀθðµåÀÇ WPA-1¿¡¼´Â TKIPÀ» ÀÌ¿ëÇϱ⶧¹®¿¡ ±úÁú ¼ö ¹Û¿¡ ¾ø½À´Ï´Ù.
WPA2´Â¾î¶³±î¿ä?
WPA2¶ÇÇÑ ±â¾÷¸ðµå´Â ÀÎÁõ°úÁ¤¿¡¼ 802.1xºÎÅÍ °É¸®±â ¶§¹®¿¡ ±úÁöÁú ¾Ê°í..
°³ÀοëÀº ÀÎÁõÀýÂ÷´Â ±úÁ®¹ö¸³´Ï´Ù. PSK¸¦ »ç¿ëÇϱ⠶§¹®¿¡.. Ç㳪, ¾ÏÈ£È ¹æ½ÄÀÌ CCMPÀ̱⿡ ÀÌ°Ô °É·Á¹ö¸³´Ï´Ù.
ÀÌ ¹æ½ÄÀº ¸Å¿ì °·ÂÇÕ´Ï´Ù.
±×·¡¼ °á·ÐÀº WPA2°¡ ÈξÀ °ÈµÈ º¸¾È ¹æ¹ýÀÌ´õ¶ó°í ÇÒ ¼ö ÀÖ½À´Ï´Ù.
Ãß°¡ÀûÀ¸·Î ÇÑ °¡Áö ´õ ¾Ë¾Æº¸µµ·Ï ÇÏ°Ú½À´Ï´Ù.
WEPÅ©·¢..¾Æ½ÃÁÒ?
±âÁ¸ WEP´Â Å° °ªÀÌ °íÁ¤µÇ¾îÀÖ¾î¼ ½±°Ô ÃßÃøÇØ ³¾ ¼ö ÀÖ¾ú½À´Ï´Ù.
ÇÏÁö¸¸ 802.11i¿¡´Â ¶Ç´Ù¸¥ WEP°¡ ÀÖ½À´Ï´Ù.
±×°Ç ¹Ù·Î Dynamic WEP(µ¿Àû WEP)Àä.
ÀÌ´Â ±âÁ¸ÀÇ WEPÀÇ Ãë¾àÇÑ ºÎºÐÀÎ static Key¸¦ dynamicÀ¸·Î ¹Ù²ã
ªÀº ³¼öÀÇ ½Ã°£µ¿¾È WEP¸¦ »ý¼ºÇÏ´Â °Ì´Ï´Ù.
ÀÌ·¸°Ô µÇ¸é crackÇÏ´Â °Í ÀÚü°¡ Á¤¸» ºÒ°¡´ÉÇØÁý´Ï´Ù.
Å©·¢ÇÒ ½Ã°£µ¿¾È Å°°¡ ¸î ¹øÀÌ°í ¹Ù²î¾î ÀÖÀ»Å״ϱî¿ä..crack ÀÚü°¡ ¹«ÀǹÌÇØÁý´Ï´Ù.
802.11i¸¦ Á¤¸®Çغ¸ÀÚ¸é ÀÌ·¸½À´Ï´Ù.
802.11i¶õ, µ¥ÀÌÅÍ ¾ÏÈ£È ¹æ½ÄÀÎ IEEE 802.11ÀÇ Ç¥ÁØÀ̶ø´Ï´Ù.
802.11i¿¡´Â ±â¾÷¿ë°ú °³ÀοëÀÌ Àִµ¥ ±â¾÷¿ëÀÇ ÀÎÁõ¹æ½ÄÀº 802.1x,°³ÀοëÀº PSK·Î °³ÀοëÀº ÀÎÁõÀýÂ÷°¡ Ãë¾àÇÏ´Ù´Â °Í.
±×¸®°í ±× ³»ºÎ¿¡´Â µ¿Àû WEP(Dynamic WEP) WPA ±×¸®°í WPA 2°¡ ÀÖ¾ú½À´Ï´Ù
Dynamic WEP¶õ, µ¿ÀûÀ¸·Î WEP¸¦ °è¼ÓÇؼ »ý¼ºÇØÁÖ¾î Å©·¢À» ¸·À» ¼ö ÀÖ½À´Ï´Ù.
WPA¶õ TKIPÀ̶ó´Â Ãë¾àÇÑ ¾ÏÈ£È ¹æ½Ä¶§¹®¿¡ Å©·¢µÉ ¼ö ÀÖ½À´Ï´Ù.
ÇÏÁö¸¸ WPA2´Â CCMP¶ó´Â ¾ÏÈ£È ¹æ½ÄÀ¸·Î ´õ¿í °ÈµÇ¾î ¿Ïº®¿¡ °¡±î¿î º¸¾ÈÀ̶ó°í ÇÒ ¼ö ÀÖ½À´Ï´Ù.
ÀÌ»óÀÔ´Ï´Ù.
PS. ÀÌ ±Û¿¡´Â ½½Ç Àü¼³ÀÌ ÀÖ½À´Ï´Ù
|
Hit : 7272 Date : 2011/02/19 05:50
|