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ÔÚÏÂÒ»ÕÂÖУ¬Ä㽫Á˽â¸ü¶àµÄ¹ØÓÚSnort¹æÔòµÄÐÅÏ¢£¬Í¬Ê±ÄãÒ²½«Á˽âÈçºÎ¶¨Òå×Ô¼ºµÄ¹æÔò¡£\r\n classification.configÎļþÖаüÀ¨Á˹ØÓÚSnort¹æÔò·ÖÀàµÄÐÅÏ¢£¬Ä㽫ÔÚÏÂÒ»ÕÂÖÐÁ˽â¸ü¶àÐÅÏ¢¡£ÔÚ±¾ÊéµÄÀý×ÓÖУ¬SnortµÄËùÓÐÔ´´úÂëÎļþÔÚ/opt/snort-1.9.0Ŀ¼ÖУ¬Èç¹ûÄãÓõÄÊDz»Í¬°æ±¾µÄSnort,¸ÃĿ¼Ҳ»á²»Í¬¡£\r\n Reference.configÎļþÖÐÂÞÁÐÁËһЩ¹ØÓÚ¸÷Öָ澯ÐÅÏ¢µÄ²Î¿¼ÍøÕ¾µÄURL,ÕâЩ²Î¿¼½«ÔÚSnort¹æÔòÖÐÒýÓã¬Äã»áÔÚÏÂÒ»ÕÂÁ˽â¸ü¶àÐÅÏ¢¡£µäÐ͵Äreference.configÎļþÈçÏÂËùʾ£º\r\n # $Id: reference.config,v 1.3 2002/08/28 14:19:15 chrisgreen\r\nExp $\r\n# The following defines URLs for the references found in the\r\nrules\r\n#\r\n# config reference: system URL\r\nconfig reference: bugtraq http://www.securityfocus.com/bid/\r\nconfig reference: cve http://cve.mitre.org/cgi-bin/\r\ncvename.cgi?name=\r\nconfig reference: arachNIDS http://www.whitehats.com/info/IDS\r\n# Note, this one needs a suffix as well.... lets add that in a\r\nbit.\r\nconfig reference: McAfee http://vil.nai.com/vil/content/v_\r\nconfig reference: nessus http://cgi.nessus.org/plugins/\r\ndump.php3?id=\r\nconfig reference: url http://\r\n ×¢Ò⣺classificationºÍreference.configÎļþ¶¼»á±»Ö÷ÅäÖÃÎļþsnort.confÒýÓá£\r\n ÏÖÔÚÄã¿ÉÒÔÓÃÏÂÃæµÄÃüÁîÔËÐÐSnortÁË£¬Õâ¸öÃüÁî»áÏÔʾÆô¶¯ÐÅÏ¢£¬È»ºó¼àÌýeth0½Ó¿Ú¡£×¢ÒâΪÁ˱ÜÃâһЩÀ§ÈÅ£¬Õâ¸öÃüÁîÓÃÃüÁîÐÐÑ¡ÏîÖ¸¶¨ÁËsnort.confÎļþµÄ¾ø¶ÔĿ¼¡£\r\n[root@conformix snort]# /opt/snort/bin/snort -c /opt/snort/\r\netc/snort.conf\r\nInitializing Output Plugins!\r\nLog directory = /var/log/snort\r\nInitializing Network Interface eth0\r\n--== Initializing Snort ==--\r\nDecoding Ethernet on interface eth0\r\nInitializing Preprocessors!\r\nInitializing Plug-ins!\r\nParsing Rules file /opt/snort/etc/snort.conf\r\n+++++++++++++++++++++++++++++++++++++++++++++++++++\r\nInitializing rule chains...\r\nNo arguments to frag2 directive, setting defaults to:\r\nFragment timeout: 60 seconds\r\nFragment memory cap: 4194304 bytes\r\nFragment min_ttl: 0\r\nFragment ttl_limit: 5\r\nFragment Problems: 0\r\nStream4 config:\r\nStateful inspection: ACTIVE\r\nSession statistics: INACTIVE\r\nSession timeout: 30 seconds\r\nSession memory cap: 8388608 bytes\r\nState alerts: INACTIVE\r\nEvasion alerts: INACTIVE\r\nScan alerts: ACTIVE\r\nLog Flushed Streams: INACTIVE\r\nMinTTL: 1\r\nTTL Limit: 5\r\nAsync Link: 0\r\nNo arguments to stream4_reassemble, setting defaults:\r\nReassemble client: ACTIVE\r\nReassemble server: INACTIVE\r\nReassemble ports: 21 23 25 53 80 143 110 111 513\r\nReassembly alerts: ACTIVE\r\nReassembly method: FAVOR_OLD\r\nhttp_decode arguments:\r\nUnicode decoding\r\nIIS alternate Unicode decoding\r\nIIS double encoding vuln\r\nFlip backslash to slash\r\nInclude additional whitespace separators\r\nPorts to decode http on: 80\r\nrpc_decode arguments:\r\nPorts to decode RPC on: 111 32771\r\ntelnet_decode arguments:\r\nPorts to decode telnet on: 21 23 25 119\r\nConversation Config:\r\nKeepStats: 0\r\nConv Count: 32000\r\nTimeout : 60\r\nAlert Odd?: 0\r\nAllowed IP Protocols: All\r\nPortscan2 config:\r\nlog: /var/log/snort/scan.log\r\nscanners_max: 3200\r\ntargets_max: 5000\r\ntarget_limit: 5\r\nport_limit: 20\r\ntimeout: 60\r\n1273 Snort rules read...\r\n1273 Option Chains linked into 133 Chain Headers\r\n0 Dynamic rules\r\n+++++++++++++++++++++++++++++++++++++++++++++++++++\r\nRule application order: ->activation->dynamic->alert->pass-\r\n>log\r\n--== Initialization Complete ==--\r\n-*> Snort! <*-\r\nVersion 1.9.0 (Build 209)\r\nBy Martin Roesch (roesch@sourcefire.com, www.snort.org)\r\nÕýÈçÄã¿´µ½µÄÕâЩÊä³öÐÅÏ¢£¬SnortÒѾ¿ªÊ¼¼àÌýeth0½Ó¿ÚÁË¡£Èç¹ûÓÐÈκΰüÓë¹æÔòÆ¥Å䣬Snort¾Í»á¸ù¾Ý¹æÔò×ö³öÏàÓ¦µÄ¶¯×÷²¢·¢³ö¸æ¾¯¡£¸æ¾¯¿ÉÒÔÒÔ¶àÖÖÐÎʽ·¢³ö¡£ÔÚÕâÖÖ»ù±¾·½Ê½ÖУ¬¸æ¾¯½«±»¼Ç¼µ½/var/log/snort/alertsÎļþÖС£ºóÃ棬Ä㽫¿´µ½²úÉúÆäËûÐÎʽµÄ¸æ¾¯²¢½«ËüÃǼǼµ½Êý¾Ý¿âÖеķ½·¨£¬Í¬Ê±ÄãÒ²»áÁ˽âSnort¸æ¾¯µÄÊý¾ÝÎļþµÄ¸ñʽ¡£\r\nÄã¿ÉÒÔÔÚÈκÎʱºòͬʱ°´ÏÂctrl¼üºÍc¼üÀ´ÖÕÖ¹Snort½ø³Ì£¬ÕâʱSnort½«ÏÔʾ³ÌÐò»î¶¯µÄ¸ÅҪȻºóÍ˳ö£¬ÈçÏÂËùʾ£º\r\n==========================================================\r\nSnort analyzed 65 out of 65 packets, dropping 0(0.000%)\r\npackets\r\nBreakdown by protocol: Action Stats:\r\nTCP: 55 (84.615%) ALERTS: 10\r\nUDP: 10 (15.385%) LOGGED: 10\r\nICMP: 0 (0.000%) PASSED: 0\r\nARP: 0 (0.000%)\r\nEAPOL: 0 (0.000%)\r\nIPv6: 0 (0.000%)\r\nIPX: 0 (0.000%)\r\nOTHER: 0 (0.000%)\r\nDISCARD: 0 (0.000%)\r\n==========================================================\r\nWireless Stats:\r\nBreakdown by type:\r\nManagement Packets: 0 (0.000%)\r\nControl Packets: 0 (0.000%)\r\nData Packets: 0 (0.000%)\r\n==========================================================\r\nFragmentation Stats:\r\nFragmented IP Packets: 0 (0.000%)\r\nFragment Trackers: 0\r\nRebuilt IP Packets: 0\r\nFrag elements used: 0\r\nDiscarded(incomplete): 0\r\nDiscarded(timeout): 0\r\nFrag2 memory faults: 0\r\n==========================================================\r\nTCP Stream Reassembly Stats:\r\nTCP Packets Used: 55 (84.615%)\r\nStream Trackers: 1\r\nStream flushes: 0\r\nSegments used: 0\r\nStream4 Memory Faults: 0\r\n==========================================================\r\nSnort received signal 2, exiting\r\n[root@conformix snort]#\r\nÇ°ÃæÌáµ½µÄ·½·¨ÊÇÔÚǰ̨ÔËÐÐSnort,ÓÃÕâÖÖ·½Ê½ÔËÐÐSnortÄãÔÚÖն˻áʧȥÌáʾ·û¡£Äã¿ÉÒÔÓÃÃüÁîÐпª¹Ø-DÀ´ÔÚºǫ́ÔËÐÐSnort,ÕâÑùSnortÈÔÈ»½«¸æ¾¯ÐÅÏ¢¼Ç¼µ½/var/log/snort£¬Í¬Ê±ÄãµÃµ½ÁËÌáʾ·û¡£×¢Ò⣬Èç¹ûÄãÊÇÓÃRPM°ü°²×°µÄSnort,ÄÇôÄã¿ÉÒÔÓá°/etc/init.d/snortd start¡±ÃüÁîʹSnortÔÚºǫ́ÔËÐС£\r\n\r\n2£®2£®3 SnortÆô¶¯Ê±µÄ´íÎó\r\n Èç¹ûÄãÊÇ×Ô¼º±àÒëµÄSnort,Æô¶¯SnortµÄʱºò£¬ÓÐʱ»á¿´µ½ÏÂÃæµÄ´íÎóÐÅÏ¢£º\r\n [!] ERROR: Cannot get write access to logging directory \"/var/\r\nlog/snort\".\r\n(directory doesn\'t exist or permissions are set incorrectly\r\nor it is not a directory at all)\r\nFatal Error, Quitting..\r\nÔì³ÉÕâ¸ö´íÎóµÄÔÒòÊÇÄãûÓд´½¨/var/log/snortĿ¼¡£ÔËÐС°mkdir /var/log/snort¡±È»ºóÔÙÆô¶¯SnortÕâ¸ö´íÎó¾ÍÏûʧÁË¡£\r\nÈç¹ûÄã¿´µ½ÏÂÃæµÄ´íÎóÐÅÏ¢£¬ËµÃ÷ÄãÔÚÆô¶¯SnortûÓÐÔÚÃüÁîÐÐÖÐÕýÈ·Ö¸¶¨ÅäÖÃÎļþµÄʱºòûÓÐÖ¸¶¨ÅäÖÃÎļþ¡£\r\nInitializing rule chains...\r\nERROR: Unable to open rules file: /root/.snortrc or /root//\r\nroot/.snortrc\r\nFatal Error, Quitting..\r\n×¢Ò⣺Äã¿ÉÒÔÏÂÁÐÇé¿ö£¬Äã¿ÉÒÔ²»Ö¸¶¨ÅäÖÃÎļþ£º\r\nÄãÔÚÅäÖÃÎļþËùÔÚµÄĿ¼Æô¶¯Snort¡£\r\nÄãÒѾ½«ÅäÖÃÎļþ¸´ÖƵ½ÄãµÄÊôÖ÷Ŀ¼ÖеÄ.snortrcÎļþÖС£\r\n2£®2£®4 ²âÊÔSnort\r\n ÔÚÆô¶¯Snortºó£¬ÄãÐèÒªÖªµÀSnortÊÇ·ñÕæÕý¿ªÊ¼²¶»ñÊý¾Ý²¢¼Í¼ÈëÇÖÐÐΪ¡£Èç¹ûÄãÔÚǰ̨ÓÃÃüÁîÐÐÑ¡Ïî¡°-A console¡±À´Æô¶¯Snort,Ä㽫ÔÚÖÕ¶ËÆÁÄ»ÉÏ¿´µ½¸æ¾¯ÐÅÏ¢¡£Èç¹ûÄãÓÃÊØ»¤½ø³ÌģʽÆô¶¯Snort¶ø²»ÓÃÉÏÃæµÄÃüÁîÐÐÑ¡ÏÄÇô¸æ¾¯¾Í¼Ç¼µ½/var/log/snort/alertÎļþÖС£\r\n ÏÂÃæµÄÃüÁʹÄãÔÚ¿ØÖÆ̨»òÕß/var/log/snort/alertÎļþÖп´µ½Ò»Ð©¸æ¾¯ÐÅÏ¢£¬Äã¿ÉÒÔÅжÏSnortÊÇ·ñÕý³£¹¤×÷£º\r\nping -n -r -b 255.255.255.255 -p \"7569643d3028726f6f74290a\" -c3\r\n Èç¹ûÄãÓá°-A console¡±ÃüÁîÐÐÑ¡ÏÄãÓ¦¸ÃÔÚÆÁÄ»ÉÏÀ´µ½ÀàËÆÓÚÏÂÃæµÄ¸æ¾¯£º\r\n 11/19-18:51:04.560952 [**] [1:498:3] ATTACK RESPONSES id\r\ncheck returned root [**] [Classification: Potentially Bad\r\nTraffic] [Priority: 2] {ICMP} 10.100.1.105 -> 255.255.255.255\r\n2£®2£®4£®1 ²úÉú²âÊԸ澯\r\nÏÂÃæµÄÃûΪsnort-test.shµÄ½Å±¾¿ÉÒÔÔÚhttp://authors.phptr.com/rehman/ ... 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