»ùÓÚSnortµÄÈëÇÖ¼ì²âϵͳ

phiazat

1 #!/bin/sh\r\n2 #\r\n3 ###############################################################\r\n4 # You are free to copy and distribute this script under #\r\n5 # GNU Public License until this part is not removed #\r\n6 # from the script. #\r\n7 ###############################################################\r\n8 # HOW TO USE #\r\n9 # #\r\n10 # Right after installation of Snort, run this script. #\r\n11 # It will generate alerts in /var/log/snort/alert file similar#\r\n12 # to the following: #\r\n13 # #\r\n14 # Note that Snort must be running at the time you run this #\r\n15 # script. #\r\n16 # #\r\n17 # [**] [1:498:3] ATTACK RESPONSES id check returned root [**] #\r\n18 # [Classification: Potentially Bad Traffic] [Priority: 2] #\r\n19 # 08/31-15:56:48.188882 255.255.255.255 -> 192.168.1.111 #\r\n20 # ICMP TTL:150 TOS:0x0 ID:0 IpLen:20 DgmLen:84 #\r\n21 # Type:0 Code:0 ID:45596 Seq:1024 ECHO REPLY #\r\n22 # #\r\n23 # These alerts are displayed at the end of the script. #\r\n24 ###############################################################\r\n25 #\r\n26 clear\r\n27 echo \"###############################################################\"\r\n28 echo \"# Script to test Snort Installation #\"\r\n29 echo \"# Written By #\"\r\n30 echo \"# #\"\r\n31 echo \"# Rafeeq Rehman #\"\r\n32 echo \"# rr@argusnetsec.com #\"\r\n33 echo \"# Argus Network Security Services Inc. #\"\r\n34 echo \"# http://www.argusnetsec.com #\"\r\n35 echo \"###############################################################\"\r\n36 echo\r\n37\r\n38 echo\r\n39 echo \"###############################################################\"\r\n40 echo \"The script generates three alerts in file /var/log/snort/alert\"\r\n41 echo \"Each alert should start with message like the following:\"\r\n42 echo\r\n43 echo \" \\\"ATTACK RESPONSES id check returned root\\\" \"\r\n44 echo \"###############################################################\"\r\n45 echo\r\n46 echo \"Enter IP address of any other host on this network. If you\"\r\n47 echo \"don\'t know any IP address, just hit Enter key. By default\"\r\n48 echo -n \"broacast packets are used [255.255.255.255] : \"\r\n49\r\n50 read ADDRESS\r\n51\r\n52 if [ -z $ADDRESS ]\r\n53 then\r\n54 ADDRESS=\"255.255.255.255\"\r\n55 fi\r\n56\r\n57 echo\r\n58 echo \"Now generating alerts. If it takes more than 5 seconds, break\"\r\n59 echo \"the script by pressing Ctrl-C. Probably you entered wrong IP\"\r\n60 echo \"address. Run the script again and don\'t enter any IP address\"\r\n61\r\n62 ping -i 0.3 -n -r -b $ADDRESS -p \"7569643d3028726f6f74290a\" -c3 2>/dev/\r\nnull >/dev/null\r\n63\r\n64 if [ $? -ne 0 ]\r\n65 then\r\n66 echo \"Alerting generation failed.\"\r\n67 echo \"Aborting ...\"\r\n68 exit 1\r\n69 else\r\n70 echo\r\n71 echo \"Alert generation complete\"\r\n72 echo\r\n73 fi\r\n74\r\n75 sleep 2\r\n76\r\n77\r\n78 echo\r\n79 echo \"################################################################\"\r\n80 echo \"Last 18 lines of /var/log/snort/alert file will be displayed now\"\r\n81 echo \"If snort is working properly, you will see recently generated\"\r\n82 echo \"alerts with current time\"\r\n83 echo \"################################################################\"\r\n84 echo\r\n85 echo \"Hit Enter key to continue ...\"\r\n86 read ENTER\r\n87\r\n88 if [ ! -f /var/log/snort/alert ]\r\n89 then\r\n90 echo \"The log file does not exist.\"\r\n91 echo \"Aborting ...\"\r\n92 exit 1\r\n93 fi\r\n94\r\n95 tail -n18 /var/log/snort/alert\r\n96\r\n97 echo\r\n98 echo \"Done\"\r\n99 echo

phiazat

¸Ã½Å±¾½«²úÉúһЩ¸æ¾¯£¬Èç¹ûÄãÓÃÊØ»¤½ø³ÌģʽÔËÐÐSnort,Äã¿ÉÒÔÔÚ/var/log/snort/alertÎļþÖп´µ½,»òÕßÄã¿ÉÒÔÔÚÄãÔËÐÐSnortµÄÖÕ¶ËÆÁÄ»ÉÏ¿´µ½¡£µ¼Ö¸澯µÄÔ­ÒòÊÇ·¢ËÍÁ˶¨ÖƵÄICMP echo°ü£¬¶¨ÖƵÄÌØÕ÷½«´¥·¢ÏÂÁÐSnort¹æÔò£¬²¢²úÉúÒ»¸ö¸æ¾¯¡£\r\nalert ip any any -> any any (msg:\"ATTACK RESPONSES id check\r\nreturned root\"; content: \"uid=0(root)\"; classtype:bad-unknown;\r\nsid:498; rev:3\r\n¸æ¾¯²úÉúºó£¬½Å±¾½«ÏÔʾ/var/log/snort/alertÎļþµÄ×îºó18ÐÐÐÅÏ¢¡£\r\nÏÖÔÚÈÃÎÒÃÇÀ´¿´¿´½Å±¾µÄ¸÷¸ö²¿ÃÅÒÔ¼°ËüÊÇÈçºÎÔË×÷µÄ¡£µÚ52µ½55ÐеÄ×÷ÓÃÊÇÌáʾÓû§ÊäÈëping°ü·¢ËÍÄ¿±êµÄµØÖ·£¬Èç¹ûÓû§Ã»ÓÐÊäÈ룬½Å±¾¾Í»á²ÉÓÃ255.255.255.255Õâ¸öµØÖ·£¬ping°ü¾Í»á×÷Ϊ¹ã²¥°ü·¢ËÍ¡£\r\nµÚ62ÐеÄ×÷ÓÃÊDzúÉú´¥·¢¹æÔòµÄICMP°ü¡£×¢ÒâÔÚÕâÀï¡°7569643d3028726f6f74290a¡±\r\nÊÂʵÉÏÓë¡°uid=0(root)¡±Êǵȼ۵ģ¬ÕâÑùµÄÌØÕ÷¿ÉÒÔ²úÉú¸æ¾¯¡£\r\n        ÃüÁîÐвÎÊý-c3µÄ×÷ÓÃÊDzúÉú3¸ö°ü¡£²¢ÇÒ±ê×¼ÊäÈëºÍ´íÎ󶼱»Öض¨Ïòµ½/dev/nullÖÐÈ¥ÁË£¬Òò´Ë²»»á²úÉúÆÁÄ»Êä³ö¡£Äã¿ÉÒÔÓá°man ping¡±ÃüÁîÀ´²ì¿´pingÃüÁîµÄman pageÒÔ»ñµÃ¸ü¶àµÄÐÅÏ¢¡£\r\n        µÚ64Ðе½µÚ73ÐеÄ×÷ÓÃÊǼì²épingÃüÁîµÄÊä³ö½á¹û¡£Êä³öµÄÐÅÏ¢½«ÏÔʾpingÃüÁîÖ´Ðнá¹ûµÄ³É¹¦»òÕßʧ°Ü¡£Èç¹ûÃüÁîʧ°Ü£¬½Å±¾¾ÍÔÚÕâÀïÍ˳ö£¬²»ÔÙÖ´ÐÐÏÂÃæµÄ¹ý³Ì¡£\r\n        Èç¹û¸æ¾¯³É¹¦²úÉú£¬ËüÃÇÒ»¶¨»á³öÏÖÔÚ/var/log/snort/alertÎļþÖС£½Å±¾88µ½93ÐÐÓÃÀ´¼ì²âÕâ¸öÎļþÊÇ·ñ´æÔÚ£¬Èç¹û²»´æÔÚ£¬½Å±¾¾ÍÍ˳öÔËÐС£\r\n        Èç¹ûÒ»ÇÐÕý³££¬µÚ95ÐеÄ×÷ÓþÍÊÇÏÔʾ/var/log/snort/alertÎļþµÄ×îºó18ÐÐÄÚÈÝ¡£\r\n        2£®2£®4£®2 ×Ô¶¯Æô¶¯Snort²¢²úÉú×Ô¶¯¸æ¾¯µÄ½Å±¾\r\n        Èç¹ûÄ㽫Snort°²×°µ½/opt/snortĿ¼Ï£¬ÄãÒ²¿ÉÒÔÓÃÏÂÃæµÄ½Å±¾À´×Ô¶¯Æô¶¯ºÍÍ£Ö¹Snort²¢¼ìÑéÆ乤×÷ÊÇ·ñÕý³£¡£ÔÚÔËÐÐÕâ¸ö½Å±¾Ö®Ç°ÒªÈ·¶¨Snort»¹Ã»ÓÐÆô¶¯£¬ÒòΪÕâ¸ö½Å±¾½«×Ô¼ºÆô¶¯Snort¡£Õâ¸öÃûΪsnort-test-auto.shµÄ½Å±¾Îļþ¿ÉÒÔÔÚ±¾ÊéµÄÏà¹ØÍøÕ¾http://authors.phptr.com/rehmanÖÐÕÒµ½¡£\r\n1 #!/bin/sh\r\n2 #\r\n3 ###############################################################\r\n4 # You are free to copy and distribute this script under #\r\n5 # GNU Public License until this part is not removed #\r\n6 # from the script. #\r\n7 ###############################################################\r\n8 # HOW TO USE #\r\n9 # #\r\n10 # Right after installation of Snort, run this script. #\r\n11 # It is assumed that snort executable is present in the #\r\n12 # /opt/argus/bin directory and all rules and configuration #\r\n13 # files are present under /opt/argus/etc/snort directory. #\r\n14 # If files are in other locations, edit the following location#\r\n15 # of variables. If you used the installation script provided #\r\n16 # along with this script, the files will be automatically #\r\n17 # located in appropriate directories. #\r\n18 # #\r\n19 # Note that the script starts and stops Snort by itself and #\r\n20 # you should make sure that Snort is not running at the time #\r\n21 # you run this script. #\r\n22 # #\r\n23 # It will generate alerts in /tmp/alert file similar #\r\n24 # to the following: #\r\n25 # #\r\n26 # [**] [1:498:3] ATTACK RESPONSES id check returned root [**] #\r\n27 # [Classification: Potentially Bad Traffic] [Priority: 2] #\r\n28 # 08/31-15:56:48.188882 255.255.255.255 -> 192.168.1.111 #\r\n29 # ICMP TTL:150 TOS:0x0 ID:0 IpLen:20 DgmLen:84 #\r\n30 # Type:0 Code:0 ID:45596 Seq:1024 ECHO REPLY #\r\n31 # #\r\n32 # These alerts are displayed at the end of the script. #\r\n33 ###############################################################\r\n34 #\r\n35\r\n36 PREFIX=/opt/snort\r\n37 SNORT=$PREFIX/bin/snort\r\n38 SNORT_CONFIG=$PREFIX/etc/snort.conf\r\n39 LOG_DIR=/tmp\r\n40 ALERT_FILE=$LOG_DIR/alert\r\n41 ALERT_FILE_OLD=$LOG_DIR/alert.old\r\n42 ADDRESS=\"255.255.255.255\"\r\n43\r\n44 clear\r\n45\r\n46 echo \"###############################################################\"\r\n47 echo \"# Script to test Snort Installation #\"\r\n48 echo \"# Written By #\"\r\n49 echo \"# #\"\r\n50 echo \"# Rafeeq Rehman #\"\r\n51 echo \"# rr@argusnetsec.com #\"\r\n52 echo \"# Argus Network Security Services Inc. #\"\r\n53 echo \"# http://www.argusnetsec.com #\"\r\n54 echo \"###############################################################\"\r\n55 echo\r\n56\r\n57 echo\r\n58 echo \"###############################################################\"\r\n59 echo \"The script generates three alerts in file /tmp/alert\"\r\n60 echo \"Each alert should start with message like the following:\"\r\n61 echo\r\n62 echo \" \\\"ATTACK RESPONSES id check returned root\\\" \"\r\n63 echo \"###############################################################\"\r\n64 echo\r\n65\r\n66 if [ ! -d $LOG_DIR ]\r\n67 then\r\n68 echo \"Creating log directory ...\"\r\n69 mkdir $LOG_DIR\r\n70\r\n71 if [ $? -ne 0 ]\r\n72 then\r\n73 echo \"Directory $LOGDIR creation failed\"\r\n74 echo \"Aborting ...\"\r\n75 exit 1\r\n76 fi\r\n77 fi\r\n78\r\n79 if [ -f $ALERT_FILE ]\r\n80 then\r\n81 mv -f $ALERT_FILE $ALERT_FILE_OLD\r\n82\r\n83 if [ $? -ne 0 ]\r\n84 then\r\n85 echo \"Can\'t rename old alerts file.\"\r\n86 echo \"Aborting ...\"\r\n87 exit 1\r\n88 fi\r\n89 fi\r\n90\r\n91 if [ ! -f $SNORT ]\r\n92 then\r\n93 echo \"Snort executable file $SNORT does not exist.\"\r\n94 echo \"Aborting ...\"\r\n95 exit 1\r\n96 fi\r\n97\r\n98 if [ ! -f $SNORT_CONFIG ]\r\n99 then\r\n100 echo \"Snort configuration file $SNORT_CONFIG does not exist.\"\r\n101 echo \"Aborting ...\"\r\n102 exit 1\r\n103 fi\r\n104\r\n105 if [ ! -x $SNORT ]\r\n106 then\r\n107 echo \"Snort file $SNORT is not executable.\"\r\n108 echo \"Aborting ...\"\r\n109 exit 1\r\n110 fi\r\n111\r\n112 echo \"Starting Snort ...\"\r\n113 $SNORT -c $SNORT_CONFIG -D -l /tmp 2>/dev/null\r\n114\r\n115 if [ $? -ne 0 ]\r\n116 then\r\n117 echo \"Snort startup failed.\"\r\n118 echo \"Aborting ...\"\r\n119 exit 1\r\n120 fi\r\n121\r\n122 echo\r\n123 echo \"Now generating alerts.\"\r\n124\r\n125 ping -i 0.3 -n -r -b $ADDRESS -p \"7569643d3028726f6f74290a\" -c3 2>/dev/\r\nnull >/dev/null\r\n126\r\n127 if [ $? -ne 0 ]\r\n128 then\r\n129 echo \"Alerting generation failed.\"\r\n130 echo \"Aborting ...\"\r\n131 exit 1\r\n132 else\r\n133 echo\r\n134 echo \"Alert generation complete\"\r\n135 echo\r\n136 fi\r\n137\r\n138 sleep 2\r\n139\r\n140 tail -n18 $ALERT_FILE 2>/dev/null | grep \"ATTACK RESPONSES id check\" >/\r\ndev/null\r\n141\r\n142 if [ $? -ne 0 ]\r\n143 then\r\n144 echo \"Snort test failed.\"\r\n145 echo \"Aborting ...\"\r\n146 exit 1\r\n147 fi\r\n148\r\n149 echo \"Stopping Snort ...\"\r\n150 pkill snort >/dev/null 2>&1\r\n151\r\n152 if [ $? -ne 0 ]\r\n153 then\r\n154 echo \"Snort stopping failed.\"\r\n155 echo \"Aborting ...\"\r\n156 exit 1\r\n157 fi\r\n158\r\n159 echo\r\n160 echo \"Done. Snort installation is working properly\"\r\n161 echo\r\n        Ò²ÐíÄã»á×¢Òâµ½£¬Èç¹û½Å±¾³É¹¦²úÉú£¬Õâ¸ö½Å±¾½«ÔÚ/tmpĿ¼Öд´½¨¸æ¾¯Îļþ¡£Èç¹ûÄãÔËÐнű¾Ò»ÇÐÕý³££¬Ä㽫¿´µ½ÏÂÃæµÄÊä³öÐÅÏ¢£º\r\n###########################################################\r\n# Script to test Snort Installation                                                 #\r\n#                 Written By                                                                                         #\r\n#                                                                                                                         #\r\n#                 Rafeeq Rehman                                                                                 #\r\n# rr@argusnetsec.com                                                                                 #\r\n# Argus Network Security Services Inc.                                                 #\r\n# http://www.argusnetsec.com                                                                #\r\n###########################################################\r\n###########################################################\r\nThe script generates three alerts in file /tmp/alert\r\nEach alert should start with message like the following:\r\n\"ATTACK RESPONSES id check returned root\"\r\n##########################################################\r\nStarting Snort ...\r\nNow generating alerts.\r\nAlert generation complete\r\nStopping Snort ...\r\nDone. Snort installation is working properly

phiazat

ÔÚÄãÔËÐÐÕâ¸ö½Å±¾µÄʱºò£¬Ëü½«»á×öһϵÁеÄÊÂÇé¡£Ê×ÏÈÔÚ36Ðе½42ÐÐËü¶¨ÒåÁËһЩ±äÁ¿¡£\r\n        ÔÚ¶¨Òå±äÁ¿Ö®ºó£¬½Å±¾½«×öÒÔϵÄÊÂÇ飺\r\n        µÚ66µ½67ÐÐÓÃÀ´¼ì²â$LOG_DIRĿ¼ÊÇ·ñ´æÔÚ¡£µÚ39ÐÐÖж¨ÒåÁËÕâ¸öĿ¼Ϊ/tmp¡£Èç¹ûÕâ¸öĿ¼²»´æÔÚ£¬½Å±¾½«´´½¨Ëü¡£\r\n        µÚ78µ½79ÐÐÓÃÀ´¼ì²â$ALERT_FILEÎļþÊÇ·ñ´æÔÚ£¬Ò²¾ÍÊÇ/tem/alert£¬Èç¹ûÒѾ­´æÔÚ£¬ÄÇô½Å±¾½«Æä¸üÃûΪ/tmp/alert.old¡£\r\n        µÚ91µ½96ÐÐÓÃÀ´¼ì²âSnortµÄ¶þ½øÖÆÎļþÊÇ·ñ´æÔÚ£¬ÔÚÕâÀïÒ²¾ÍÊÇ/opt/snort/bin/snort¡£Èç¹ûÕâ¸öÎļþ²»´æÔÚ£¬½Å±¾¾ÍÖÕÖ¹Ö´ÐС£\r\n        µÚ98µ½103ÐÐÓÃÀ´¼ì²â$SNORT_CONFIGÎļþ£¬ÔÚÕâÀïÒ²¾ÍÊÇ/opt/snort/etc/snort.confÎļþÊÇ·ñ´æÔÚ£¬Èç¹û²»´æÔÚ£¬½Å±¾¾ÍÖÕÖ¹Ö´ÐС£\r\n        µÚ105µ½110ÐÐÓÃÀ´È·¶¨SnortµÄ¶þ½øÖÆÎļþ¿ÉÒÔÕý³£Ö´ÐС£\r\n        µÚ113ÐÐÓÃÀ´Æô¶¯Snort.\r\n        µÚ115µ½120ÐÐÓÃÀ´¼ì²âSnortÆô¶¯ÊÇ·ñÕý³£¡£\r\n        µÚ125ÐÐÓÃÀ´²úÉúÇ°ÃæÌáµ½µÄ¸æ¾¯£¬ÕâЩ¸æ¾¯½«±»·¢Ë͵½¹ã²¥µØÖ·¡£\r\n        µÚ127µ½136ÐÐÓÃÀ´È·¶¨¸æ¾¯²úÉú¹ý³ÌÊÇ·ñÕý³£¡£\r\n        µÚ140ÐÐÓÃÀ´¼ì²âalertÎļþÖеÄ×îºó18ÐÐÒÑÈ·¶¨¸æ¾¯ÊÇ·ñ³É¹¦²úÉúÒÔ¼°ÊÇ·ñÕý³£¼Ç¼ÈÕÖ¾¡£\r\n        µÚ142µ½147ÐеÄ×÷ÓÃÊÇÈç¹ûµÚ140ÐвâÊԵĽá¹ûʧ°Ü£¬¾ÍÏÔʾһ¸ö´íÎóÐÅÏ¢¡£\r\n        µÚ150ÐÐÓÃÀ´Í£Ö¹Snort¡£\r\n        µÚ160ÐÐÏÔʾÐÅÏ¢±íʾ²âÊÔ¹ý³Ì³É¹¦¡£\r\n2£®2£®5 ÔÚ·ÇĬÈ϶˿ÚÔËÐÐSnort\r\n        ÔÚLinuxϵͳÖУ¬SnortÆô¶¯µÄʱºò¾Í¿ªÊ¼¼àÌýÍøÂçeth0¡£µ«ÊǺܶàÈËÔÚÓжà¸ö½Ó¿ÚµÄ»úÆ÷ÉÏÔËÐÐSnort¡£Èç¹ûÄãÏëÈÃSnort¼àÌýÆäËüµÄ½Ó¿Ú£¬ÄãÒªÓõ½ÃüÁîÐÐÑ¡Ïî-I¡£ÏÂÃæµÄÃüÁî¿ÉÒÔÆô¶¯SnortʹÆä¼àÌýÍøÂç½Ó¿Úeth1¡£\r\nsnort -c /opt/snort/etc/snort.conf ¨Ci eth1\r\n        ÔÚ×Ô¶¯ºÍ¹Ø±ÕSnortµÄÇé¿öÏ£¬ÄãÐèÒªÐ޸Ľű¾/etc/init.d/snortdÒÔʹSnortÆô¶¯µÄʱºò¼àÌýÄãËùÏ£ÍûµÄ¶Ë¿Ú¡£¹ØÓÚSnortµÄ×Ô¶¯×Ô¶¯ºÍ¹Ø±ÕÔÚÏÂÒ»²¿·Ö½âÊÍ¡£\r\n        2£®2£®6 SnortµÄ×Ô¶¯Æô¶¯ºÍ¹Ø±Õ\r\n        Äã¿ÉÒÔÅäÖÃSnortʹÆäÔÚϵͳÆô¶¯ºÍ¹Ø±ÕµÄʱºò×Ô¶¯Æô¶¯ºÍ¹Ø±Õ¡£ÔÚUNIXÀàµÄ»úÆ÷ÉÏ£¬Äã¿ÉÒÔÓýű¾À´Íê³ÉÕâÏ×÷£¬ÔÚLinuxÖУ¬¿ÉÒÔÔÚ/etc/init.d/Ŀ¼Ï´´½¨ÕâÑùµÄ½Å±¾¡£Æô¶¯½Å±¾¿ÉÒÔÁ´½Óµ½/etc/rc3.dĿ¼Ï£¬¹Ø±Õ½Å±¾¿ÉÒÔÁ´½Óµ½/etc/rc2.d¡¢/etc/rc1.dºÍ/etc/rc0.dĿ¼Ï¡£SnortµÄRPM·¢²¼°æÖÐÀ¦°óµÄ/etc/init.d/snortd½Å±¾Îļþ´óÌåÈçÏÂËùʾ£º\r\n[root@conformix]# cat /etc/init.d/snortd\r\n#!/bin/sh\r\n#\r\n# snortd Start/Stop the snort IDS daemon.\r\n#\r\n# chkconfig: 2345 40 60\r\n# description: snort is a lightweight network intrusion\r\n# detection tool that\r\n# currently detects more than 1100 host and network\r\n# vulnerabilities, portscans, backdoors, and more.\r\n#\r\n# June 10, 2000 -- Dave Wreski <dave@linuxsecurity.com>\r\n# - initial version\r\n#\r\n# July 08, 2000 Dave Wreski <dave@guardiandigital.com>\r\n# - added snort user/group\r\n# - support for 1.6.2\r\n# July 31, 2000 Wim Vandersmissen <wim@bofh.st>\r\n# - added chroot support\r\n# Source function library.\r\n. /etc/rc.d/init.d/functions\r\n# Specify your network interface here\r\nINTERFACE=eth0\r\n# See how we were called.\r\ncase \"$1\" in\r\nstart)\r\necho -n \"Starting snort: \"\r\ncd /var/log/snort\r\ndaemon /usr/sbin/snort -A fast -b -l /var/log/snort \\\r\n¨Cd -D -i $INTERFACE -c /etc/snort/snort.conf\r\ntouch /var/lock/subsys/snort\r\necho\r\n;;\r\nstop)\r\necho -n \"Stopping snort: \"\r\nkillproc snort\r\nrm -f /var/lock/subsys/snort\r\necho\r\n;;\r\nrestart)\r\n$0 stop\r\n$0 start\r\n;;\r\nstatus)\r\nstatus snort\r\n;;\r\n*)\r\necho \"Usage: $0 {start|stop|restart|status}\"\r\nexit 1\r\nesac\r\nexit 0

phiazat

[root@conformix /root]#\r\nҪעÒâµÄÊÇ£¬Æô¶¯ºÍ¹Ø±ÕSnort¶¼»áÓÃÕâͬһ¸öÎļþ¡£ÔÚijһÔËÐ춱ð£¬Á´½ÓÎļþÃûµÄµÚÒ»¸ö×Ö·ûÓÃÀ´È·¶¨Õâ¸ö½Å±¾ÊÇÓÃÀ´Æô¶¯»¹ÊÇÓÃÀ´¹Ø±ÕSnort¡£Æô¶¯Á´½ÓÒÔS¿ªÍ·£¬ÈçÔËÐ춱ð3ÖеÄÆô¶¯Îļþ/etc/rc3.d/S50snort£¬Êµ¼ÊÉÏËüÊÇÁ´½Óµ½/etc/init.d/snortdÎļþµÄ¡£ÓëÖ®ÀàËÆ£¬ÓÃÀ´¹Ø±ÕµÄ½Å±¾Á´½ÓÎļþÒÔK¿ªÍ·£¬ÀýÈç/etc/rc2.d/K50snort£¬ÕâÑù½«ÔÚÔËÐ춱ð2¹Ø±ÕSnort¡£\r\nͬʱ£¬ÄãÒ²¿ÉÒÔÓýű¾À´ÊÖ¹¤Æô¶¯ºÍ¹Ø±ÕSnort,ÏÂÃæµÄÁ½¸öÃüÁî·Ö±ðÓÃÀ´Æô¶¯ºÍ¹Ø±ÕSnort:\r\n/etc/init.d/snortd start\r\n/etc/init.d/snortd stop\r\n        ×¢Òâ½Å±¾ÔÚͬÔËÐ춱ðĿ¼ÖеÄÁ´½Ó¿ÉÄÜ»áÓв»Í¬µÄÃû³Æ¡£½Å±¾Á´½ÓÎļþµÄÃû×ÖÒÀÀµÓÚÔÚϵͳÆô¶¯¹Ø±Õ¹ý³ÌÖÐSnortËù´¦µÄλÖá£Èç¹ûÄãÓÃRPM°²×°µÄSnort,ÄÇôÕâЩÁ´½Ú½«ÔÚ°²×°RPM°üµÄ¹ý³ÌÖб»´´½¨¡£\r\n2£®3 ÔÚ¶à¸öÍøÂç½Ó¿ÚÉÏÔËÐÐSnort\r\n        µ±SnortÆô¶¯µÄʱºò£¬½«ÔÚij¸ö¶Ë¿ÚÉϼàÌýÍøÂçͨÐÅ¡£Äã¿ÉÒÔÓÃÃüÁîÐÐÑ¡Ïî-I <interface_name>À´Ö¸¶¨ÄãÏë¼àÌýµÄ½Ó¿Ú¡£Èç¹ûÄãÏëͬʱ¼àÌý¶à¸öÍøÂç½Ó¿Ú£¬ÄÇôÄãÐèҪͬʱÔËÐжà¸öSnortµÄ¸±±¾¡£ÀýÈ磬ÏÂÃæÁ½¸öÃüÁîÓÃÀ´ÔÚLinux»úÆ÷ÉϼàÌýeth0½Ó¿ÚºÍeth1½Ó¿Ú¡£\r\n/opt/snort/bin/snort -c /opt/snort/etc/snort.conf -i eth0 -l /\r\nvar/log/snort0\r\n/opt/snort/bin/snort -c /opt/snort/etc/snort.conf -i eth1 -l /\r\nvar/log/snort1\r\n        ÎÒÃÇ¿´µ½ÕâÁ½¸öÃüÁîÓõ½ÁËÁ½¸öÈÕ־Ŀ¼£º/var/log/snort0ºÍ/var/log/snort1£¬Òò´ËÕâÁ½¸öSnort½ø³Ì½«·Ö±ð±£´æ×Ô¼ºµÄÈÕÖ¾¡£ÔÚÄãÆô¶¯SnortµÄʱºò£¬ÕâÁ½¸öĿ¼±ØÐëÒѾ­´æÔÚ¡£\r\n        Èç¹û¸ù¾Ýsnort.confÎļþµÄÅäÖã¬Snort½«ÈÕÖ¾¼Ç¼µ½MySQLÊý¾Ý¿âÖУ¬ÄÇôÈÕÖ¾½«±»¼Ç¼µ½Í¬Ò»¸öÊý¾Ý¿âÖС£\r\n        ÄãÐèÒªÁ˽⣬ÄãÒ²¿ÉÒÔ¸ø²»Í¬µÄSnort½ø³ÌʹÓò»Í¬µÄÅäÖÃÎļþ£¬ÕâÑù×öµÄÄ¿µÄÓкܶà¸ö¡£Ö÷ÒªÔ­ÒòÊÇÄãµÄ²»Í¬ÍøÂç½Ó¿ÚËùÁ¬½ÓµÄÍøÂçÊDz»Í¬µÄ£¬ÁíÒ»¸öÔ­ÒòÊÇÄã¿ÉÒÔÈÃÒ»¸ö½Ó¿ÚµÄSnort½«ÈÕÖ¾¼Ç¼µ½Êý¾Ý¿âÖУ¬¶øÁíÍâÒ»¸ö¼Ç¼µ½ÏµÍ³ÈÕÖ¾ÖС£¼ûͼ2-2£º\r\n2£®4 SnortÃüÁîÐÐÑ¡Ïî\r\n        SnortÓкܶàÃüÁîÐÐÑ¡Ï¿ÉÒÔÈÃÄãÔÚÆô¶¯SnortµÄʱºò¸ù¾ÝÇé¿öÑ¡Ôñ¡£ÕýÈçÄãÔÚÇ°Ãæ¿´µ½µÄ£¬Äã¿ÉÒÔÔÚÒ»¸öϵͳÉÏÔËÐжà¸öSnort¡£Äã¿ÉÒÔÓÃÃüÁî¡°Snort -?¡±À´ÏÔʾÃüÁîÐÐÑ¡Ïî¡£×î³£ÓõÄһЩÃüÁîÐÐÑ¡ÏîÈç±í2-2Ëùʾ¡£\r\n \r\nÑ¡Ïî        ÃèÊö           \r\n-A        ÓÃÀ´ÉèÖø澯ģʽ¡£¸æ¾¯Ä£Ê½ÓÃÀ´ÉèÖø澯Êý¾ÝµÄÏêϸ³Ì¶È¡£¿ÉÓõÄģʽÓÐfast,full,consoleºÍnone¡£ÄãÔÚÇ°ÃæÒѾ­¿´µ½consoleģʽÊÇÔÚÆÁÄ»ÉÏÏÔʾ¸æ¾¯¶ø²»¼Ç¼µ½Îļþ¡£FastģʽÔÚSnortÔËÐÐÔÚ¸ßËÙÍøÂç»·¾³ÖÐÄܹ»Óõõ½¡£           \r\n-b        Õâ¸öÑ¡ÏîÓÃÀ´½«ÈÕÖ¾¼Ç¼Ϊtcpdump¸ñʽ£¬ÕâÑù¼Ç¼ÈÕÖ¾µÄËٶȷdz£¿ì£¬È»ºóÄã¿ÉÒÔÓÃtcpdump³ÌÐòÀ´²ì¿´Êý¾Ý¡£           \r\n-c        ÕâÊÇ×î³£ÓõÄÑ¡ÏÓÃÀ´Ö¸¶¨snort.confÎļþµÄλÖá£Èç¹ûÄãÓÃÕâ¸öÑ¡ÏîÖ¸¶¨£¬Snort¾Í²»»áÔÚĬÈÏλÖÃÕÒsnort.confÎļþ¡£ÀýÈ磬Èç¹ûsnort.confÎļþÔÚ/etcĿ¼ÖУ¬ÄãÒªÓÃÃüÁîÐÐÑ¡Ï-c /etc/snort.conf¡±À´Æô¶¯Snort¡£           \r\n-D        Õâ¸öÑ¡ÏîÓÃÀ´Ê¹SnortÔÚºǫ́ÔËÐУ¬ÔÚ¶àÊýʵÓÃÇé¿ö£¬»áÓõ½Õâ¸öÑ¡Ïî¡£ÔÚ°²×°Íê²âÊÔµÄʱºò£¬²»ÒªÓÃÕâ¸öÑ¡Ïî¡£           \r\n-i        Õâ¸öÑ¡ÏîÓÃÀ´Ö¸¶¨Snort¼àÌýµÄÍøÂç½Ó¿Ú¡£µ±ÄãÓжà¸öÍøÂç½Ó¿Ú²¢Ïë¼àÌýÆäÖÐÒ»¸öµÄʱºò£¬Õâ¸öÑ¡Ïîʹ·Ç³£ÓÐÓõġ£¶øÇÒÔÚÄãÔËÐжà¸öSnortÀ´¼àÌý¶à¸ö½Ó¿ÚµÄʱºò£¬Ò²»áÓõ½Õâ¸öÑ¡Ïî¡£ÀýÈçÄãÖ»Ïë¼àÌýeth1½Ó¿Ú£¬ÄÇôÔÚÆô¶¯SnortµÄʱºòÓá°-i eth1¡±Ñ¡Ïî¡£           \r\n-l         Õâ¸öÑ¡ÏîÓÃÀ´Ö¸¶¨Snort¼Ç¼ÈÕÖ¾µÄĿ¼£¬Ä¬ÈÏĿ¼ÊÇ/var/log/snort¡£ÀýÈ磬ÄãÏ뽫ËùÓеÄÈÕÖ¾Îļþ¼Ç¼µ½/snortĿ¼Ï£¬ÄãÓ¦µ±ÓÃÃüÁîÐÐÑ¡Ïî¡°-l /snort¡±¡£           \r\n-M        ΪʹÓÃÕâ¸öÑ¡ÏÄãÓ¦µ±Ö¸¶¨Ò»¸öÎı¾Îļþ¡£Õâ¸öÎı¾ÎļþÖаüº¬ÁËһЩÄãÏë·¢ËÍÐÅÏ¢µÄWindowsÖ÷»úµÄÁÐ±í£¬Ã¿ÐÐÖ»°üÀ¨Ò»¸öIPµØÖ·¡£×¢ÒâÄã¿ÉÒÔÓÃsnort.confÎļþ´ïµ½Í¬ÑùµÄÄ¿µÄ£¬Õ⽫ÔÚºóÃæ½âÊÍ¡£           \r\n-T        Õâ¸öÑ¡ÏîÔÚÄã×ö²âÊԺͱ¨¸æµÄʱºòÊǷdz£ÓÐÓõġ£Äã¿ÉÒÔÓÃÕâ¸öÑ¡ÏîÀ´ÕÒ³öÅäÖÃÎļþÖеĴíÎó¡£         \r\n\r\n\r\n\r\n³ýÁ˱íÖÐÁоٵģ¬»¹ÓÐһЩ²»Ì«³£ÓõÄÑ¡ÏÕâЩѡÏÔÚºóÃæµÄÏà¹Ø²¿·Öµ½ÂÛ¡£Ò»Ð©ÃüÁîÐÐÑ¡ÏîµÄ¹¦ÄÜÒ²¿ÉÒÔͨ¹ýsnort.confÀ´ÊµÏÖ¡£\r\n\r\n2£®5 ÓÃÔ´´úÂë±àÒë²¢°²×°SnortµÄ²½Öè×ܽá\r\n        ÓÉRPM°ü°²×°SnortÊǷdz£¼òµ¥µÄ£¬ÄãÖ»ÐèÒªÔËÐÐÒ»¸öÃüÁî¾Í¿ÉÒÔÁË£º¡°rpm -install <snort_file_name.rpm>¡±¡£µ«ÕýÈçÒѾ­¿´µ½µÄ£¬Èç¹ûÄãÒªÓÃÔ´´úÂëÀ´°²×°£¬¾ÍÒª¶à×öºÜ¶à¹¤×÷ÁË¡£ÏÂÃæÊǶÔÔ´´úÂë°²×°²½ÖèµÄ×ܽ᣺\r\n´Óhttp://www.snort.orgÏÂÔØÔ´´úÂëÎļþ¡£\r\nÓá°tar zxvf <filename.tar.gz>¡±ÃüÁî½â°ütarÎļþ¡£\r\nÔËÐÐconfigure½Å±¾£¬µäÐ͵ÄÃüÁîÈ磺¡°configure --prefix=/opt/snort --with-mysql ¨Cwith-snmp --with-opnssl¡±\r\nÔËÐÐmakeÃüÁî¡£\r\nÔËÐС°make install¡±¡£\r\n´´½¨Ä¿Â¼/var/log/snort¡£\r\n´´½¨Ä¿Â¼/opt/snort/etc¡£\r\n´´½¨Ä¿Â¼/opt/snort/rules¡£\r\n½«snort.conf¸´ÖƵ½/opt/snort/etcĿ¼ÖС£\r\n½«classifacation.configÎļþ¸´ÖƵ½/opt/snort/etcĿ¼ÖС£\r\n½«reference.configÎļþ¸´ÖƵ½/opt/snort/etcĿ¼ÖС£\r\n½«ËùÓеÄrulesÎļþ¸´ÖƵ½/opt/snort/rulesĿ¼ÖС£\r\n´´½¨snortd½Å±¾Îļþ²¢¸´ÖƵ½/etc/init.dĿ¼ÖУ¬²¢ÔÚ/etc/rcxÖд´½¨Á´½Ó¡£ÕâÀïxÊÇÔËÐ춱ðµÄÊý×Ö¡£ÕâÑùSnort¿ÉÒÔÔÚϵͳÆô¶¯µÄʱºòÔËÐС£\r\nÈç¹ûÄãÒªÓÃMySQLÓëSnortÒ»Æð¹¤×÷£¬ÄÇôÔÚÆô¶¯SnortÇ°ÒªÆô¶¯MySQL¡£

phiazat

2.6 SnortÎļþµÄλÖÃ\r\nSnortÎļþ·ÖΪÏÂÁÐÀà±ð£º\r\nn        SnortµÄ¶þ½øÖÆÎļþ£¬n        Ò²¾ÍÊÇ¿ÉÖ´ÐÐÎļþ¡£\r\nn        SnortµÄÖ÷ÅäÖÃÎļþ£¬n        ͨ³£ÊÇsnort.conf¡£\r\nn        SnortµÄÆäËüÅäÖÃÎļþ£¬n        Èçclassification.configºÍreference.config¡£\r\nn        ¹æÔòÎļþ¡£\r\nn        ÈÕÖ¾Îļþ¡£\r\nÈç¹ûÄãÓÃRPM°ü°²×°Snort£¬ËüµÄ¶þ½øÖÆÎļþͨ³£»á°²×°ÔÚ/usr/sbinĿ¼Ï¡£Èç¹ûÊDZàÒë°²×°£¬°²×°Ä¿Â¼ÓСªprefixÃüÁîÐÐÑ¡ÏîÖ¸¶¨¡£\r\nÈç¹ûÄãÓÃRPM°ü°²×°Snort£¬Ö÷ÅäÖÃÎļþsnort.conf½«±»°²×°ÔÚ/etc/snortĿ¼ÖС£µ±È»£¬Äã¿ÉÒÔ½«Õâ¸öÎļþ±£´æÔÚÈκÎÒ»¸öĿ¼ÖУ¬ÒòΪÔÚÆô¶¯SnortµÄʱºòÄã¿ÉÒÔÓÃÃüÁîÐÐÑ¡ÏîÀ´Ö¸¶¨¡£ÔÚ±¾ÊéµÄÀý×ÓÖУ¬Õâ¸öÎļþÊÇ´æ·ÅÔÚ/opt/snort/etcĿ¼Ïµġ£\r\nÆäËüÅäÖÃÎļþÈçclassification.configºÍreference.configͨ³£´æ·ÅÔÚÓësnort.confÏàͬµÄĿ¼ÖС£ÔÚsnort.confÎļþÖн«Ö¸¶¨ÕâЩÎļþµÄĿ¼£¬Äã¿ÉÒԸıäËü¡£\r\n¹æÔòÎļþÔÚsnort.confÖÐÒýÓá£Èç¹ûÄãÓÃRPM°ü°²×°Snort£¬ÄÇôrulesÎļþÒ²±»°²×°ÔÚ/etc/snortĿ¼ÖС£ÔÚ±¾ÊéµÄÀý×ÓÖУ¬ÓÃÔ´´úÂë°²×°£¬ÕâЩÎļþ±»°²×°ÔÚ/opt/snort/rules\r\nĿ¼ÖС£Í¨¹ýÐÞ¸Äsnort.confÎļþ£¬Äã¿ÉÒԸıäÕâЩ¹æÔòÎļþµÄλÖá£\r\n        SnortÈÕÖ¾ÎļþµÄλÖÿÉÒÔͨ¹ýsnort.confÎļþÖ¸¶¨»òÕßÓÃÃüÁîÐÐÑ¡ÏîÖ¸¶¨¡£Í¨³£ÈÕÖ¾Îļþ´æ·ÅÔÚ/var/log/snortĿ¼ÖС£Èç¹ûÕâ¸öĿ¼²»´æÔÚ£¬Äã±ØÐëÊÖ¹¤´´½¨¡£Èç¹ûSnort´Ó²»Í¬µÄÖ÷»ú¼Ç¼ÈÕÖ¾£¬Ëü¿ÉÒÔÔÚ/var/log/snortĿ¼ÖÐΪÿ¸öÖ÷»ú´´½¨Ä¿Â¼¡£\r\n        ÀýÈ磬Äã¿ÉÒÔÔÚsnort.confÖеÄÈçÏÂÒ»ÐÐÐÞ¸ÄÈÕÖ¾ÎļþµÄĬÈÏ·¾¶µ½/snortlog£º\r\n                config logdir: /snortlog\r\n        ÄãÒ²¿ÉÒÔÔÚÆô¶¯SnortµÄʱºòÓÃÃüÁîÐÐÑ¡Ïî-lÀ´¸Ä±äÈÕÖ¾ÎļþµÄĿ¼¡£µÚÈýÕÂÖаüÀ¨¹ØÓÚsnort.confÎļþµÄÏêϸÌÖÂÛ¡£

phiazat

2£®7 SnortµÄ²Ù×÷ģʽ\r\n        SnortÓÐÁ½ÖÖ»ù±¾²Ù×÷ģʽ£º°üÐá̽Æ÷ģʽºÍNIDSģʽ¡£Snort¿ÉÒÔÓÃ×÷ÀàËÆÓÚtcpdumpºÍsnoopµÄÐá̽Æ÷¡£ÔÚÐá̽Æ÷ģʽ£¬SnortÒ²¿ÉÒÔ½«ÕâЩ°üµÄÐÅÏ¢¼Ç¼µ½ÈÕÖ¾ÎļþÖС£ÕâЩÎļþËæºó¿ÉÒÔÓÃSnort»òÕßtcpdump²ì¿´¡£ÔÚÕâÖÖģʽÖУ¬Snort²»»á×öÈκÎÈëÇÖ¼ì²â»î¶¯¡£ÕâÖÖģʽµÄÓô¦²¢·ÇºÜ´ó£¬ÒòΪÏÖÔÚÓкܶà¿ÉÒԼǼ°üµÄ¹¤¾ßÁË¡£±ÈÈ磬ËæͬLinux·¢ÐеÄtcpdump¾ÍÊÇÒ»¸öЧÂʺܸߵÄÐá̽Æ÷¡£\r\n        Èç¹ûÄ㽫SnortÓÃÔÚÍøÂçÈëÇÖ¼ì²â(NIDS)ģʽ£¬Ëü»áÓùæÔòÀ´ÕÒ³öÊÇ·ñ´æÔÚÈëÇֻ¡£\r\n        2.7.1ÍøÂçÐá̽Æ÷ģʽ\r\n        SnortÔÚÍøÂçÐá̽Æ÷ģʽÏ£¬Óë³£ÓõÄtcpdumpÀàËÆ¡£Ëü¿ÉÒÔ²¶»ñÍøÂçÖеİü²¢ÒÔ²»Í¬µÄÏêϸ³Ì¶È½«°üµÄÐÅÏ¢ÏÔʾÔÚÖÕ¶ËÉÏ¡£ÔÚÕâÖÖģʽÏÂÔËÐÐSnort²¢²»ÐèÒªÅäÖÃÎļþ¡£ÏÂÃæµÄÃüÁÏÔʾÍø¶ÎÖÐͨÐеÄÿ¸ö°üµÄÐÅÏ¢£º\r\n[root@conformix snort]# /opt/snort/bin/snort -v\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\n--== Initialization Complete ==--\r\n-*> Snort! <*-\r\nVersion 1.9.0 (Build 209)\r\nBy Martin Roesch (roesch@sourcefire.com, www.snort.org)\r\n11/20-15:56:14.632067 192.168.1.100:2474 -> 192.168.1.2:22\r\nTCP TTL:128 TOS:0x0 ID:4206 IpLen:20 DgmLen:40 DF\r\n***A**** Seq: 0x9DAEEE9C Ack: 0xF5683C3A Win: 0x43E0 TcpLen: 20\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\n11/20-15:56:14.632188 192.168.1.2:22 -> 192.168.1.100:2474\r\nTCP TTL:64 TOS:0x10 ID:57042 IpLen:20 DgmLen:200 DF\r\n***AP*** Seq: 0xF5683C8A Ack: 0x9DAEEE9C Win: 0x6330 TcpLen: 20\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\n11/20-15:56:14.632519 192.168.1.2:22 -> 192.168.1.100:2474\r\nTCP TTL:64 TOS:0x10 ID:57043 IpLen:20 DgmLen:120 DF\r\n***AP*** Seq: 0xF5683D2A Ack: 0x9DAEEE9C Win: 0x6330 TcpLen: 20\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\n11/20-15:56:14.633891 192.168.1.2:22 -> 192.168.1.100:2474\r\nTCP TTL:64 TOS:0x10 ID:57044 IpLen:20 DgmLen:184 DF\r\n***AP*** Seq: 0xF5683D7A Ack: 0x9DAEEE9C Win: 0x6330 TcpLen: 20\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\n\r\nSnort½«²»¶ÏµØÔÚÆÁÄ»ÉÏÏÔʾËù²¶»ñµÄ°üµÄÐÅÏ¢Ö±µ½ÄãÓÃCrtl-CÖÕÖ¹Snort,ÕâʱËü½«ÏÔʾͳ¼ÆÐÅÏ¢¡£\r\n        ÏÖÔÚÈÃÎÒÃÇÀ´·ÖÎöSnortµÄÐá̽Æ÷ģʽÔÚÆÁÄ»ÉÏÏÔʾµÄÐÅÏ¢¡£ÏÂÃæÊÇÒ»¸ö²¶»ñµÄµäÐ͵ÄTCP°üµÄÊä³öÐÅÏ¢¡£\r\n11/20-15:56:14.633891 192.168.1.2:22 -> 192.168.1.100:2474\r\nTCP TTL:64 TOS:0x10 ID:57044 IpLen:20 DgmLen:184 DF\r\n***AP*** Seq: 0xF5683D7A Ack: 0x9DAEEE9C Win: 0x6330 TcpLen: 20\r\n        Èç¹û·ÖÎöÕâ¸öÊä³öÐÅÏ¢£¬Äã¿ÉÒԵõ½ÒÔϹØÓÚÕâ¸ö°üµÄÐÅÏ¢£º\r\nÕâ¸ö°ü±»²¶»ñµÄʱ¼äºÍÈÕÆÚ¡£\r\nÔ´IPµØÖ·ÊÇ192.168.1.2\r\nÔ´¶Ë¿ÚÊÇ22¡£\r\nÄ¿µÄµØÖ·ÊÇ192.168.1.100\r\nÄ¿µÄ¶Ë¿ÚÊÇ2474\r\nÕâ¸ö°üµÄ´«Êä²ãЭÒéÊÇTCP¡£\r\nIPÍ·ÖеÄTTLÖµÊÇ64¡£\r\nTOSÖµÊÇ0x10¡£\r\nIPÍ·µÄ³¤¶ÈÊÇ20¡£\r\nIPÔغÉÊÇ184¸ö×Ö½Ú¡£\r\nIPÍ·²¿ÖеÄDFλÒѱ»ÉèÖ㨲»Òª·ÖƬ£©¡£\r\nÁ½¸öTCP flag±»ÉèÖóÉon¡£\r\nTCPÍ·µÄsequence numberÊÇ0xF5683D7A¡£\r\nTCPÍ·µÄAck numberÊÇ0xDAEEE9C¡£\r\nTCPµÄ´°¿Ú×Ö¶ÎÖµÊÇ0x6330¡£\r\nTCPÍ·²¿³¤¶ÈÊÇ20¡£\r\nÄã¿ÉÒÔÓøü¶àµÄÃüÁîÐÐÑ¡ÏîÀ´ÏÔʾ¸ü¶à¹ØÓÚËù²¶»ñµÄ°üµÄÐÅÏ¢¡£ÏÂÃæµÄÃüÁî³ýÁËÄܹ»ÏÔʾ°üµÄTCP¡¢UDP¡¢ºÍICMPÐÅÏ¢ÒÔÍ⣬»¹Äܹ»ÏÔʾһЩӦÓòãÐÅÏ¢¡£×¢Ò⣬Õâ¸öÃüÁî²¢²»ÄÜÏÔʾ°üµÄËùÓÐÐÅÏ¢¡£

phiazat

[root@conformix snort]# /opt/snort/bin/snort -dv\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\n--== Initialization Complete ==--\r\n-*> Snort! <*-\r\nVersion 1.9.0 (Build 209)\r\nBy Martin Roesch (roesch@sourcefire.com, www.snort.org)\r\n11/20-16:18:11.129548 192.168.1.100:2474 -> 192.168.1.2:22\r\nTCP TTL:128 TOS:0x0 ID:4387 IpLen:20 DgmLen:40 DF\r\n***A**** Seq: 0x9DAEF2FC Ack: 0xF5688CDA Win: 0x4190 TcpLen: 20\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\n11/20-16:18:11.129723 192.168.1.2:22 -> 192.168.1.100:2474\r\nTCP TTL:64 TOS:0x10 ID:57171 IpLen:20 DgmLen:120 DF\r\n***AP*** Seq: 0xF5688D2A Ack: 0x9DAEF2FC Win: 0x6330 TcpLen: 20\r\nC5 1D 81 8F 70 B7 12 0B C1 1B 8F 6D A9 8F 1D 05 ....p......m....\r\n40 7D F9 BD 84 21 11 59 05 01 E4 A1 01 20 AC 92 @}...!.Y..... ..\r\n58 50 73 8D 17 EA E2 17 AD 3A AD 54 E2 50 80 CB XPs......:.T.P..\r\nDA E1 40 30 7B 63 0D 79 5A D8 51 07 93 95 2B A8 ..@0{c.yZ.Q...+.\r\nF8 D4 F5 FA 76 D6 27 35 E8 6E E2 ED 41 2B 01 2D ....v.\'5.n..A+.-\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\n11/20-16:18:11.130802 192.168.1.2:22 -> 192.168.1.100:2474\r\nTCP TTL:64 TOS:0x10 ID:57172 IpLen:20 DgmLen:120 DF\r\n***AP*** Seq: 0xF5688D7A Ack: 0x9DAEF2FC Win: 0x6330 TcpLen: 20\r\nE9 7C 09 E0 E0 5C 3E 17 1C BE 93 1F B0 DA 92 40 .|...\\>........@\r\nD1 18 71 52 80 F3 B2 F7 59 CE F7 7C D4 8F FD B4 ..qR....Y..|....\r\n98 08 A9 63 63 23 0D C8 9D A4 4F 68 87 06 0D 16 ...cc#....Oh....\r\n44 61 09 CD FF FE 8B 1A 5B D8 42 43 1D 1A 6F A8 Da......[.BC..o.\r\n14 90 C6 63 4C EE 9D 64 1B 90 CC 3A FB BD 7E E4 ...cL..d...:..~.\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\n11/20-16:18:11.131701 192.168.1.2:22 -> 192.168.1.100:2474\r\nTCP TTL:64 TOS:0x10 ID:57173 IpLen:20 DgmLen:120 DF\r\n***AP*** Seq: 0xF5688DCA Ack: 0x9DAEF2FC Win: 0x6330 TcpLen: 20\r\nAF CE 60 CB 79 06 BB 3D 58 72 76 F2 51 0F C1 9A ..`.y..=Xrv.Q...\r\n22 5A E3 27 49 F8 A5 00 1B 5A 4F 24 12 0F BF 70 \"Z.\'I....ZO$...p\r\nB7 81 A0 0C F9 EB 83 D1 33 EB C1 5A 2A E6 2E 4B ........3..Z*..K\r\nF1 98 FB 5A A9 C7 C3 92 78 B1 35 FF F7 59 CF B3 ...Z....x.5..Y..\r\n83 D2 E7 FF 37 F8 34 56 CD 0F 61 62 A9 16 A4 9F ....7.4V..ab....\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\n11/20-16:18:11.133935 192.168.1.100:2474 -> 192.168.1.2:22\r\nTCP TTL:128 TOS:0x0 ID:4388 IpLen:20 DgmLen:40 DF\r\n***A**** Seq: 0x9DAEF2FC Ack: 0xF5688D7A Win: 0x40F0 TcpLen: 20\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\n11/20-16:18:11.134057 192.168.1.2:22 -> 192.168.1.100:2474\r\nTCP TTL:64 TOS:0x10 ID:57174 IpLen:20 DgmLen:280 DF\r\n***AP*** Seq: 0xF5688E1A Ack: 0x9DAEF2FC Win: 0x6330 TcpLen: 20\r\nA6 CF F9 B5 EA 24 E0 48 34 45 4B 57 5D FF CB B5 .....$.H4EKW]...\r\nD6 C9 B3 26 3C 59 66 2C 55 EE C1 CF 09 AD 3A C2 ...&<Yf,U.....:.\r\n74 B6 61 D3 C5 63 ED BD 6F 51 0D 5E 18 44 07 AF t.a..c..oQ.^.D..\r\n86 D2 8A 3F 82 F0 D2 84 5C A6 7F CC D5 7B 90 56 ...?....\\....{.V\r\n93 CF CF 4D DE 03 00 4D E4 4B AD 75 3E 03 71 DC ...M...M.K.u>.q.\r\nA6 3D 78 DA 01 BF F0 33 46 7D E1 53 B5 62 94 9A .=x....3F}.S.b..\r\n29 46 56 78 B1 73 C0 3E BB C0 EC 5C 6E D0 E6 BE )FVx.s.>...\\n...\r\nF9 5C 02 90 40 B1 BA 07 F1 96 2F A0 0F 9D E1 3E .\\..@...../....>\r\n8C 3C 40 07 B2 21 28 CA 2D 41 AC 5C 77 C6 D0 3F .<@..!(.-A.\\w..?\r\n73 0B 15 32 47 B5 CE E3 FB 83 B3 72 1A B4 64 9F s..2G......r..d.\r\n6D C7 55 B8 6B DB FC AF 94 8F F3 58 B0 79 CF 14 m.U.k......X.y..\r\n3F 9A FC 32 1D B6 21 B0 4D C3 64 82 C0 62 A8 8C ?..2..!.M.d..b..\r\n80 C7 4A C8 BA D9 C3 0D 74 86 76 B8 49 8A 94 D1 ..J.....t.v.I...\r\n4C F3 BF AF 55 3B 57 2B EA C7 48 B7 A4 BD B2 20 L...U;W+..H....\r\n4A 66 B4 4E F3 2A 7E B6 F8 63 A8 61 42 F3 85 3B Jf.N.*~..c.aB..;\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\nÄã¿ÉÒÔÓÃÏÂÃæµÄÃüÁîÀ´ÏÔʾ°üµÄËùÓÐÐÅÏ¢¡£.\r\nÕâ¸öÃüÁî¿ÉÒÔͬʱÒÔASCII·½Ê½ºÍ¶þ½øÖÆ·½Ê½ÏÔʾ°üµÄÐÅÏ¢¡£\r\n[root@conformix snort]# /opt/snort/bin/snort -dev\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\n--== Initialization Complete ==--\r\n-*> Snort! <*-\r\nVersion 1.9.0 (Build 209)\r\nBy Martin Roesch (roesch@sourcefire.com, www.snort.org)\r\n05/27-12:11:10.063820 00:59:6C:9:8B -> FF:FF:FF:FF:FF:FF type:0x800\r\nlen:0xFC\r\n192.168.1.100:138 -> 192.168.1.255:138 UDP TTL:128 TOS:0x0 ID:48572\r\nIpLen:20 DgmLen:238\r\nLen: 218\r\n11 0E 82 D5 C0 A8 01 64 00 8A 00 C4 00 00 20 46 .......d...... F\r\n43 46 43 43 4E 45 4D 45 42 46 41 46 45 45 50 46 CFCCNEMEBFAFEEPF\r\n41 43 41 43 41 43 41 43 41 43 41 43 41 41 41 00 ACACACACACACAAA.\r\n20 41 42 41 43 46 50 46 50 45 4E 46 44 45 43 46 ABACFPFPENFDECF\r\n43 45 50 46 48 46 44 45 46 46 50 46 50 41 43 41 CEPFHFDEFFPFPACA\r\n42 00 FF 53 4D 42 25 00 00 00 00 00 00 00 00 00 B..SMB%.........\r\n00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\r\n00 00 11 00 00 2A 00 00 00 00 00 00 00 00 00 E8 .....*..........\r\n03 00 00 00 00 00 00 00 00 2A 00 56 00 03 00 01 .........*.V....\r\n00 01 00 02 00 3B 00 5C 4D 41 49 4C 53 4C 4F 54 .....;.\\MAILSLOT\r\n5C 42 52 4F 57 53 45 00 0C 00 A0 BB 0D 00 42 41 \\BROWSE.......BA\r\n54 54 4C 45 43 4F 57 53 00 00 00 00 01 00 03 0A TTLECOWS........\r\n00 10 00 80 D4 FE 50 03 52 52 2D 4C 41 50 54 4F ......P.RR-LAPTO\r\n50 00 P.\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\n11/20-16:20:38.459702 00:59:6C:9:8B -> 0:50:BA:5E:EC:25 type:0x800\r\nlen:0x3C\r\n192.168.1.100:2474 -> 192.168.1.2:22 TCP TTL:128 TOS:0x0 ID:4506\r\nIpLen:20 DgmLen:40 DF\r\n***A**** Seq: 0x9DAEFD9C Ack: 0xF568E2FA Win: 0x3F20 TcpLen: 20\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+\r\n11/20-16:20:38.460728 0:50:BA:5E:EC:25 -> 00:59:6C:9:8B type:0x800\r\nlen:0x86\r\n192.168.1.2:22 -> 192.168.1.100:2474 TCP TTL:64 TOS:0x10 ID:57303\r\nIpLen:20 DgmLen:120 DF\r\n***AP*** Seq: 0xF568E34A Ack: 0x9DAEFD9C Win: 0x6BD0 TcpLen: 20\r\nF9 7B 4B 96 3F C8 0A BC DF 9E EE 4F DA 27 6F B4 .{K.?......O.\'o.\r\n92 BD A7 C5 1D E4 35 AB DB BF 7B 56 B9 F8 BA A1 ......5...{V....\r\n86 BB FE 6E FD 41 55 FF D0 51 04 AF 73 80 13 29 ...n.AU..Q..s..)\r\nD7 62 67 A4 B5 0C 5F 32 30 36 81 C2 9C 31 53 AD .bg..._206...1S.\r\n3A 65 46 EE F1 52 59 ED 57 C7 6A 85 88 5A 3E D8 :eF..RY.W.j..Z>.\r\n=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+

phiazat

2.7.1.1ÓÃÎı¾¸ñʽ¼Ç¼SnortÊý¾Ý\r\nÄã¿ÉÒÔÔÚÃüÁîÐÐÓÃ-l <directory name>½«SnortÊý¾Ý¼Í¼ΪÎı¾Ä£Ê½¡£ÏÂÃæµÄÃüÁî»á½«ËùÓеÄSnortÊý¾Ý¼Ç¼µ½/var/log/snortĿ¼ÏÂͬʱÏÔʾÔÚÖնˡ£\r\n                snort ¨Cdev ¨Cl /var/log/snort\r\n        È»ºóÄã»á·¢ÏÖ/var/log/snortĿ¼ÏÂÃæ³öÏÖһЩ×ÓĿ¼£¬Ã¿¸ö¶ÔÓ¦Ò»¸öÖ÷»ú£¬ÆäÖаüº¬Ò»Ð©Îļþ¡£×ÓĿ¼µÄÃû³Æͨ³£ÓëÖ÷»úµÄIPµØÖ·Ïàͬ¡£ÆäÖеÄÎļþÊÇÓÚ²»Í¬µÄÁ¬½ÓºÍ²»Í¬ÀàÐ͵ÄÍøÂçÊý¾Ý¡£ÀýÈ磬°üº¬ÒÔTCP´òÍ·µÄTCPÊý¾Ý£¬ÈçÎļþÃû£º2489-23¡£Ò»¸ö°üº¬ICMPÊý¾ÝµÄÎļþÈ磺ICMP_ECHO¡£µ±ÄãÔËÐÐSnortÐá̽Æ÷µÄʱºò£¬ÈÕÖ¾ÖеÄÄÚÈÝÓëÏÔʾÆ÷ÉÏÏÔʾµÄÊÇÏàͬµÄ¡£\r\n2.7.1.2 ÒÔ¶þ½øÖƸñʽ¼Ç¼SnortÊý¾Ý\r\nÔÚÒ»¸ö¸ßËÙÍøÂç»·¾³ÖУ¬½«Ðí¶àÎļþ¼Ç¼³ÉASCII¸ñʽ»áµ¼Ö¹ý¸ßµÄ¿ªÏú¡£SnortÔÊÐíÄ㽫Êý¾Ý¼Ç¼Ϊtcpdump¸ñʽµÄ¶þ½øÖÆÎļþÒÔ¹©Ëæºó²ì¿´¡£Õâʱ£¬Snort½«ËùÓеÄÊý¾Ý¼Ç¼³É¶þ½øÖƵÄraw¸ñʽ¡£µäÐ͵ÄÃüÁîÈçÏ£º\r\n        snort ¨Cl /tmp ¨Cb\r\nSnort½«»áÔÚ/tmpĿ¼Ï´´½¨Îļþ£¬µäÐ͵ÄÎļþÃûÀàËÆÓÚ£ºsnort.log.1037840339¡£ÎļþÃûµÄ×îºóÒ»²¿·ÖÒÀÀµÓÚÄãµÄϵͳʱÖÓ¡£Ã¿´ÎÄãÔÚÕâÖÖģʽÏÂÔËÐÐSnort,ÔÚÈÕ־Ŀ¼¾Í»áÓÐÒ»¸öÐÂÎļþ²úÉú¡£ÓÐʱ°ÑÕâÖּǼģʽ³ÆΪquickģʽ¡£\r\nÄã¿ÉÒÔÓÃSnort²é¿´raw¸ñʽµÄ¶þ½øÖÆÎļþ£¬ÓÃÃüÁîÐпª¹Ø-rÀ´Ö¸¶¨ÎļþÃû¡£ÏÂÃæµÄÃüÁÏÔʾsnort.log.1037840339ÖÐËù²¿»ñµÃÊý¾Ý¡£\r\nsnort -dev -r /tmp/snort.log.1037840339| more\r\nÕâ¸öÃüÁîµÄÊä³öÓëÄãÔÚ¿ØÖÆ̨ÉÏʵʱ¿´µ½µÄÊÇÏàͬµÄ¡£Äã¿ÉÒÔÓò»Í¬µÄÃüÁîÐпª¹ØÀ´ÒÔ²»Í¬µÄÏêϸ³Ì¶ÈÀ´ÏÔʾÕâЩÊý¾Ý¡£\r\nÄãÒ²¿ÉÒÔÓÃÃüÁîÏÔʾÌض¨ÀàÐ͵ÄÊý¾Ý¡£ÏÂÃæµÄÃüÁî»áÏÔʾÈÕÖ¾ÎļþÖеÄËùÓÐTCPÊý¾Ý¡£\r\nsnort -dev -r / tmp/snort.log.1037840339 tcp\r\nÏÔʾICMPÊý¾ÝºÍUDPÊý¾ÝÓëÖ®ÀàËÆ¡£\r\n        ÄãÒ²¿ÉÒÔÓÃtcpdumpÀ´¶ÁÈ¡Snort²úÉúµÄ¶þ½øÖÆÊý¾Ý¡£ÏÂÃæµÄÃüÁ¶ÁÈ¡²¢ÏÔʾSnort²¶»ñµÄÊý¾Ý£º\r\n[root@conformix snort]# tcpdump -r /tmp/snort.log.1037840514\r\n20:01:54.984286 192.168.1.100.2474 > 192.168.1.2.ssh: . ack 4119588794\r\nwin 16960 (DF)\r\n20:01:54.984407 192.168.1.2.ssh > 192.168.1.100.2474: P 81:161(80) ack\r\n0 win 32016 (DF) [tos 0x10]\r\n20:01:54.985428 192.168.1.2.ssh > 192.168.1.100.2474: P 161:241(80) ack\r\n0 win 32016 (DF) [tos 0x10]\r\n20:01:54.986325 192.168.1.2.ssh > 192.168.1.100.2474: P 241:321(80) ack\r\n0 win 32016 (DF) [tos 0x10]\r\n20:01:54.988508 192.168.1.100.2474 > 192.168.1.2.ssh: . ack 161 win\r\n16800 (DF)\r\n20:01:54.988627 192.168.1.2.ssh > 192.168.1.100.2474: P 321:465(144)\r\nack 0 win 32016 (DF) [tos 0x10]\r\n20:01:54.990771 192.168.1.100.2474 > 192.168.1.2.ssh: . ack 321 win\r\n16640 (DF)\r\n20:01:55.117890 192.168.1.100.2474 > 192.168.1.2.ssh: . ack 465 win\r\n16496 (DF)\r\n20:01:55.746665 192.168.1.1.1901 > 239.255.255.250.1900: udp 269\r\n20:01:55.749466 192.168.1.1.1901 > 239.255.255.250.1900: udp 325\r\n20:01:55.751968 192.168.1.1.1901 > 239.255.255.250.1900: udp 253\r\n20:01:55.754145 192.168.1.1.1901 > 239.255.255.250.1900: udp 245\r\n20:01:55.756781 192.168.1.1.1901 > 239.255.255.250.1900: udp 289\r\n20:01:55.759258 192.168.1.1.1901 > 239.255.255.250.1900: udp 265\r\n20:01:55.761763 192.168.1.1.1901 > 239.255.255.250.1900: udp 319\r\n20:01:55.764365 192.168.1.1.1901 > 239.255.255.250.1900: udp 317\r\n20:01:55.767103 192.168.1.1.1901 > 239.255.255.250.1900: udp 321\r\n20:01:55.769557 192.168.1.1.1901 > 239.255.255.250.1900: udp 313\r\n20:01:56.336697 192.168.1.100.2474 > 192.168.1.2.ssh: P 0:80(80) ack\r\n465 win 16496 (DF)\r\n[root@conformix snort]#\r\n        Äã¿ÉÒÔÓÃtcpdumpµÄ²»Í¬ÃüÁîÐÐÑ¡ÏîÀ´¿ØÖÆÏÔʾ¡£Óá°man tcpdump¡±ÃüÁî»òÕ߲鿴¸½Â¼A»ñÈ¡¸ü¶àtcpdumpµÄÐÅÏ¢¡£\r\n\r\n2.7.2 ÍøÂçÈëÇÖ¼à²âģʽ\r\n        ÔÚÈëÇÖ¼ì²âģʽÏ£¬Snort²¢²»¼Ç¼ËùÓⶻñµÄ°ü£¬¶øÊǽ«°üÓë¹æÔò±È¶Ô£¬½öµ±°üÓëij¸ö¹æÔòÆ¥ÅäµÄʱºò£¬²Å»á¼Ç¼ÈÕÖ¾»ò²úÉú¸æ¾¯¡£Èç¹û°ü²¢²»ÓÚÈκÎÒ»¸ö¹æÔòÆ¥Å䣬ÄÇôËü½«±»ÇÄÇĵĶªÆú£¬²¢²»×öÈκμͼ¡£ÄãÔÚÔËÐÐSnortµÄÈëÇÖ¼à²âģʽµÄʱºò£¬Í¨³£»áÔÚÃüÁîÐÐÖ¸¶¨Ò»¸öÅäÖÃÎļþ£¬Õâ¸öÎļþ°üº¬Ò»Ð©¹æÔòºÍ¶ÔÆäËû°üº¬¹æÔòµÄÎļþµÄÒýÓ㬳ý´ËÖ®Í⣬»¹ÓÐһЩ¹ØÓÚÊäÈëºÍÊä³ö²å¼þµÄÐÅÏ¢£¬ÕâЩ½«ÔÚµÚ4ÕÂÌÖÂÛ¡£ÅäÖÃÎļþµÄÃûͨ³£ÊÇsnort.conf,ÔÚÇ°ÃæµÄ°²×°¹ý³ÌÖÐÎÒÃÇÒѾ­½«ÅäÖÃÎļþsnort.confºÍÆäËûһЩÎļþ±£´æÔÚ/opt/snort/etcĿ¼ÏÂÁË¡£ÏÂÃæµÄÃüÁÓÃÀ´Æô¶¯SnortµÄÍøÂçÈëÇÖ¼ì²â(NID)ģʽ£º\r\nsnort -c /opt/snort/etc/snort.conf\r\n        µ±ÄãÆô¶¯Õâ¸öÃüÁîºó£¬Snort½«¶ÁÈ¡ÅäÖÃÎļþ/opt/snort/etc/snort.confÒÔ¼°±»ÆäÒýÓõÄËùÓйæÔòÎļþ¡£Í¨³£ÕâЩÎļþ°üº¬Snort¹æÔòºÍÅäÖÃÊý¾Ý¡£¶ÁÈ¡ÕâЩÊý¾Ýºó£¬Snort½«½¨Á¢ÄÚ²¿Êý¾Ý½á¹¹ºÍ¹æÔòÁ´¡£ËùÓб»²¶»ñµÄÊý¾Ý½«ÓÚÕâЩ¹æÔò±È¶Ô£¬²¢¸ù¾Ý¹æÔòµÄÒªÇó×ö³öÏàÓ¦µÄ¶¯×÷¡£Èç¹ûÄãÐÞ¸Äsnort.confÎļþ£¬»òÕßÒýÓÃÁíÍâµÄÎļþ£¬Äã±ØÐëÖØÆôSnortʹÆäÉúЧ¡£\r\n        ÔÚIDSģʽ£¬»¹ÓÐһЩÆäËüµÄÃüÁîÐÐÑ¡ÏîÓ뿪¹Ø¿ÉÓá£ÀýÈ磬Äã¿ÉÒÔ½«ÈÕÖ¾¼Ç¼µ½Îļþ£¬Ò²¿ÉÒÔÓÃÃüÁîÏÔʾ¡£Èç¹û½«SnortÓÃ×÷³¤ÆÚ¼à²â£¬ÄÇôÈÕÖ¾Ô½¶à£¬ÄãÐèÒªµÄ´ÅÅÌ¿Õ¼ä¾ÍÔ½´ó£¬½«ÈÕÖ¾ÏÔʾÔÚÖÕ¶ËÉÏÒ²»áÏûºÄһЩÖ÷»úµÄ´¦ÀíÄÜÁ¦£¬Òò´Ë£¬Ôںδ¦ÔËÐÐSnortÒ²ÊÇÐèÒª¿¼Âǵġ£ÏÂÃæµÄÃüÁʹSnort¹¤×÷ÔÚIDSģʽ£¬²¢Í¬Ê±×÷ΪÐá̽Æ÷½«ÈÕÖ¾¼Ç¼µ½/var/log/snortĿ¼Ï¡£\r\nsnort -dev -l /var/log/snort -c /etc/snort/snort.conf\r\n        µ«Ôںܶàʵ¼ÊÓ¦ÓÃÇé¿öÏ£¬Äã»áʹÓÃÃüÁîÐпª¹Ø-DʹSnortÒÔÊØ»¤½ø³ÌµÄ·½Ê½ÔËÐУ¬¶ø²»ÔÙÖÕ¶ËÉϼͼ¡£\r\n        ͨ³£µÄÇé¿ö£¬Äã»áÏ£Íû½«SnortÈÕÖ¾Êý¾Ý¼Ç¼µ½Êý¾Ý¿â£¬ÎÒÃǽ«ÔÚµÚ5ÕÂÌÖÂÛ½«SnortÈÕÖ¾ÐÅÏ¢¼Ç¼µ½MySQLÊý¾Ý¿âµÄÇé¿ö¡£

phiazat

2£®8 SnortµÄ¸æ¾¯Ä£Ê½\r\n        µ±SnortÔËÐÐÔÚNIDģʽÏ£¬Èç¹û²¶»ñµÄ°üÓë¹æÔòÆ¥Å䣬Snort¿ÉÒÔÒÔ¶àÖÖģʽ²úÉú¸æ¾¯¡£ÕâЩģʽ¿ÉÒÔͨ¹ýsnort.confÀ´ÅäÖã¬Ò²¿ÉÒÔÓÃÃüÁîÐÐÅäÖá£ÕâÒ»²¿·Ö½«½éÉܳ£Óõĸ澯ģʽ¡£Îª·½±ã½éÉÜ£¬ÎÒ»áÓÃÒ»¸öÔÚSnort¼ì²âµ½TTLֵΪ100µÄICMP°üʱ»á²úÉú¸æ¾¯µÄ¹æÔò£¬ÈçÏ£º\r\n                alert icmp any any -> any any (msg: \"ing with TTL=100\"; \\\r\nttl:100\r\n        ¹æÔò½«ÔÚÏÂÒ»ÕÂÏêϸÌÖÂÛ£¬¶Ô±¾´ÎÌÖÂÛÀ´Ëµ£¬ÄãÖ»ÒªÖªµÀÕâ¸ö¹æÔò½«ÔÚÓöµ½TTLΪ100µÄICMP°üµÄʱºò²úÉúÒ»¸ö°üº¬¡°Ping with TTL=100¡±ÎÄ×ÖÐÅÏ¢µÄ¸æ¾¯¾Í¿ÉÒÔÁË¡£Õâ¸ö¹æÔò²¢²»¹ØÐÄ°üÖеÄÔ´µØÖ·»òÄ¿µÄµØÖ·¡£ÎÒÔÚÎÒµÄWindows»úÆ÷ÉÏÓÃÏÂÃæµÄÃüÁîÀ´·¢ËÍÒ»¸öTTL=100µÄICMP echo°ü¡£\r\nC:\\rrehman>ping -n 1 -i 100 192.168.1.3\r\nPinging 192.168.1.3 with 32 bytes of data:\r\nReply from 192.168.1.3: bytes=32 time=3ms TTL=255\r\nPing statistics for 192.168.1.3:\r\nPackets: Sent = 1, Received = 1, Lost = 0 (0% loss),\r\nApproximate round trip times in milli-seconds:\r\nMinimum = 3ms, Maximum = 3ms, Average = 3ms\r\nC:\\rrehman>\r\n        ÃüÁîÐÐÑ¡Ïî¡°-n 1¡±ÓÃÀ´Ö¸¶¨½ö½ö·¢ËÍÒ»¸öICMP°ü¡£¡°-i 100¡±ÓÃÀ´Ê¹ICMP°üÖеÄTTLÖµµÈÓÚ100¡£¿ÉÒÔÔÚftp://ftp.isi.edu/in-notes/rfc79 ... ·²¿¸ñʽµÄÏêϸÐÅÏ¢¡£\r\n        µ±ÔËÐÐÉÏÃæµÄÃüÁîµÄʱºò£¬Snort½«²¶»ñµ½Õâ¸öÊý¾Ý°ü²¢²úÉúÒ»¸ö¸æ¾¯¡£¸æ¾¯Ëù¼Í¼µÄÐÅÏ¢µÄ¶àÉÙ½«ÒÀÀµÓÚÌض¨µÄ¸æ¾¯Ä£Ê½¡£ÏÂÃæÎÒÃÇÀ´¿´ÔÚ¶ÔÒ»¸ö°ü¼Í¼µÄʱºò²»Í¬µÄ¸æ¾¯Ä£Ê½µÄ²îÒ죺\r\n        2.8.1 Faseģʽ\r\n        Fast¸ß¾²Ä¬Ê¹½«¼Ç¼ÒÔϸ澯ÐÅÏ¢£º\r\n                ʱ¼ä´Á\r\n                ¸æ¾¯ÏûÏ¢£¨Í¨¹ý¹æÔòÅäÖã©\r\n                Ô´µØÖ·ºÍÄ¿µÄµØÖ·\r\n                Ô´¶Ë¿ÚºÍÄ¿µÄ¶Ë¿Ú\r\n        Ó¦µ±ÓÃÃüÁîÐÐÑ¡Ïî¡°-A fast¡±À´ÅäÖÃfase¸æ¾¯Ä£Ê½£¬ÕâÖָ澯ģʽµÄϵͳ¿ªÏú±È½ÏС¡£ÏÂÃæµÄÃüÁîÓÃfast¸æ¾¯Ä£Ê½Æô¶¯Snort:\r\n                /opt/snort/bin/snort -c /opt/snort/etc/snort.conf -q -A fast\r\n        Ñ¡Ïî-qÓÃÀ´Í£Ö¹ÔÚÆÁÄ»ÏÔʾ³õʼ»¯ÐÅÏ¢ºÍ×îºóµÄ»ã×Üͳ¼Æ¡£ÏÖÔÚ£¬Èç¹û²úÉúÒ»¸ö¸æ¾¯£¬Ëü½«±»¼Ç¼µ½/var/log/snort/alertÎļþÖУ¬µ±È»£¬Äã¿ÉÒÔÓÃÃüÁîÐÐÑ¡Ïî-lÀ´¸Ä±äËüµÄλÖ᣸澯ÐÅÏ¢ÀàËÆÈçÏÂËùʾ£º\r\n                05/28-22:16:25.126150 [**] [1:0:0] Ping with TTL=100 [**]\r\n{ICMP} 192.168.1.100 -> 192.168.1.3\r\n        Õâ¸ö¸æ¾¯°üº¬ÏÂÃæµÄÐÅÏ¢£º\r\n                ¸æ¾¯²úÉúµÄÈÕÆÚºÍʱ¼ä¡£\r\n                ±íʾÔÚ¹æÔòÖеĸ澯ÏûÏ¢£¬ÔÚÕâ¸öÀý×ÓÖУ¬Õâ¸öÏûÏ¢¾ÍÊÇ£º¡°Ping with TTL=100¡±.\r\n                Ô´µØÖ·ÊÇ192.168.1.100¡£\r\n                Ä¿µÄµØÖ·ÊÇ192.168.1.3\r\n                °üµÄÀàÐÍ£¬ÔÚÉÏÃæµÄÀý×ÓÖУ¬°üµÄÀàÐÍÊÇICMP¡£\r\n        2.8.2 Fullģʽ\r\n        ÕâÊÇĬÈϵĸ澯ģʽ£¬³ýÁËÊä³ö¸æ¾¯ÐÅÏ¢Ö®Í⣬»¹ÓаüµÄÍ·²¿ÐÅÏ¢¡£ÎÒÃÇ¿ÉÒÔÓÃÏÂÃæµÄÃüÁîʹSnort¾ßÓÐfull¸æ¾¯Ä£Ê½¡£\r\n                        /opt/snort/bin/snort -c /opt/snort/etc/snort.conf -q -A full\r\n        µ±Snort¹¤×÷ÔÚÕâÖָ澯ģʽϵÄʱºò£¬ÔÚ/var/log/snort/alertÖмǼµÄÐÅÏ¢ÀàËÆÓÚÈçÏ£º\r\n[**] [1:0:0] Ping with TTL=100 [**]\r\n05/28-22:14:37.766150 192.168.1.100 -> 192.168.1.3\r\nICMP TTL:100 TOS:0x0 ID:40172 IpLen:20 DgmLen:60\r\nType:8 Code:0 ID:768 Seq:20224 ECHO\r\n        ÕýÈçÄã¿´µ½µÄ£¬ÈÕÖ¾ÖмǼÁ˸½¼ÓµÄÐÅÏ¢£¬ÕâЩÐÅÏ¢ÏÔʾ°üÍ·ÖеIJ»Í¬µÄÖµ£¬°üÀ¨:\r\nIP°üÍ·²¿µÄTTLÖµ¡£ÔÚftp://ftp.isi.edu/in-notes/rfc79 ... È¡¹ØÓÚTTLµÄÏêϸÐÅÏ¢\r\nIP°üÍ·²¿µÄTOSÖµ£¬²Î¿¼RFC791»ò±¾Ê鸽¼A»ñÈ¡TOSµÄÏêϸÐÅÏ¢¡£\r\nIPÍ·³¤¶È£¬ÏÔʾΪ£ºIpLen:20¡£\r\nIP°ü×ܳ¤£¬ÏÔʾΪ£ºDgmLen:60¡£\r\nICMPÀàÐͶΣ¬²Î¿¼RFC792»ñÈ¡ICMPÀàÐͶεÄÏêϸÐÅÏ¢¡£\r\nICMP´úÂë¶Î£¬²Î¿¼RFC792»ñÈ¡ICMP´úÂë¶ÎµÄÏêϸÐÅÏ¢¡£\r\nIP°üµÄID¡£\r\nÐòÁкš£\r\nICMP°üµÄÀàÐÍ£ºECHO¡£\r\n2.8.3 UNIXÌ×½Ó×Öģʽ\r\nÄã¿ÉÒÔÓÃÃüÁîÐÐÑ¡Ïî¡°-a unsock¡±Ê¹Snort½«Í¨¹ýUNIXÌ×½Ó×Ö½«¸æ¾¯·¢Ë͵½ÆäËûµÄ³ÌÐò¡£Èç¹ûÄãÏë½øÒ»²½´¦ÀíSnort¸æ¾¯£¬Õ⽫·Ç³£ÓÐÓá£Äã¿ÉÒÔÓá°man socket¡±ÃüÁîÀ´²é¿´Ì×½Ó×ֵĸü¶àÐÅÏ¢¡£\r\n2£®8£®4Î޸澯ģʽ\r\nÄã¿ÉÒÔÓÃÃüÁîÐÐÑ¡Ïî¡°-A none¡±½«Snort¸æ¾¯ÍêÈ«¹Ø±Õ¡£ÕâÔÚ¸ßËÙÍøÂç»·¾³Ó¦ÓÃͳһÈÕÖ¾µÄÇé¿öÏÂÊǷdz£ÓÐÓõġ£Äã¿ÉÒÔÔÚÓÃͳһÈÕÖ¾µÄʱºò¹Ø±ÕÆÕͨÈÕ־ѡÏͳһÈÕÖ¾Êä³ö²å¼þ½«ÔÚµÚ4ÕÂÖÐÌÖÂÛ¡£\r\n2.8.5 ½«¸æ¾¯·¢Ë͵½Syslog\r\nÏÂÃæµÄÃüÁîÔÊÐíSnort½«¸æ¾¯·¢Ë͵½SyslogÊØ»¤½ø³Ì¡£SyslogÊDzúÉúϵͳʼþÈÕÖ¾µÄÊØ»¤½ø³Ì£¬Ëü½«¶ÁÈ¡ÅäÖÃÎļþ/etc/syslog.confÈ¡µÃ¼Ç¼ÈÕÖ¾ÎļþµÄλÖã¬Õâ¸öλÖÃͨ³£ÊÇ/var/logĿ¼£¬ÔÚLinuxϵͳÖУ¬Ö÷ÈÕÖ¾ÎļþÊÇ/var/log/messages¡£Óá°man syslog¡±ÃüÁîÀ´»ñµÃ¸ü¶àµÄÐÅÏ¢£¬Õâ¸öÃüÁî»áÏÔʾsyslog.confÎļþµÄ¸ñʽÐÅÏ¢¡£\r\n¸ù¾Ý/etc/syslog.confÎļþÖеÄÅäÖ㬸澯½±±­¼Ç¼µ½Ò»¸öÌض¨ÎļþÖС£ÏÂÃæµÄÃüÁî¿ÉÒÔʹSnort½«ÈÕÖ¾¼Ç¼µ½SyslogÊØ»¤½ø³Ì£º\r\n/opt/snort/bin/snort -c /opt/snort/etc/snort.conf -s\r\nÔÚÎÒµÄRedHat 7.1¼ÆËã»úÉÏ£¬Ê¹ÓõÄÊÇĬÈÏÅäÖã¬ÐÅÏ¢»á±»¼Ç¼µ½/var/log/messagesÎļþÖС£µ±ÄãÓÃTTL=100µÄICMP²úÉú¸æ¾¯Ê±£¬/var/log/messagesÎļþÖн«¼Ç¼ÏÂÃæµÄÐÅÏ¢£º\r\nMay 28 22:21:02 snort snort[1750]: [1:0:0] Ping with TTL=100\r\n{ICMP} 192.168.1.100 -> 192.168.1.3\r\n±¾ÊéµÄµÚ4Õ½«ÌÖÂÛʹÓÃSyslog¹¤¾ß£¬Í¬Ê±£¬Ä㽫Á˽âÈçºÎÓÃÊä³ö²å¼þ¼Ç¼ÈÕÖ¾µ½Syslog¡£

phiazat

2.8.6 ÏòSNMP·¢Ë͸澯\r\nSnortµÄÒ»¸ö·Ç³£ÓÐÓõÄÌØÐÔÊÇSNMP trap¡£Äã¿ÉÒÔÅäÖÃÒ»¸öÊä³ö²å¼þ£¬¿ÉÒÔ½«ÐÅÏ¢ÒÔSNMP trapµÄÐÎʽ·¢Ë͵½ÍøÂç¹ÜÀíϵͳ¡£Í¨¹ýÕâ¸öÌØÐÔ£¬Äã¿ÉÒÔ½«ÄãµÄÈëÇÖ¼ì²â̽²âÆ÷ÕûºÏµ½ÀàËÆÓÚHP OpenView,OpenNMS£¬MRTGµÈ¼¯ÖеÄÍø¹ÜϵͳÖС£SnortÅäÖÃSNMP trapµÄÅäÖùý³Ì½«ÔÚºóÃæÏêϸÌÖÂÛ¡£\r\n2.8.7ÏòWindows·¢Ë͸澯\r\nSnort¿ÉÒÔÒÔµ¯³ö´°¿ÚµÄÐÎʽÏòWindows¼°Æä·¢³ö¸æ¾¯£¬ÔÚwindowsÖУ¬µ¯³ö´°¿ÚÓÉWindowsÐÅʹ·þÎñ¿ØÖÆ¡£ÎªÊ¹µ¯³ö´°¿Ú¹¤×÷£¬Windows±ØÐëÒªÔËÐÐÐÅʹ·þÎñ¡£Äã¿ÉÒÔµ½¿ØÖÆÃæ°åµÄ·þÎñ³ÌÐòÀ´¿´WindowÐÅʹ·þÎñÊÇ·ñÔÚÔËÐС£·þÎñÑ¡ÏîÔÚÄãµÄ¹ÜÀí¹¤¾ß²Ëµ¥ÖУ¬¸ù¾ÝÄãµÄWindows°æ±¾µÄ²»Í¬£¬Ò²¿ÉÄÜÔÚ¿ØÖÆÃæ°å»òÆäËûµÄλÖá£\r\nÔÚÄãµÄUnix»úÆ÷ÉÏ£¬±ØÐëÒª°²×°SAMBA¿Í»§¶ËÈí¼þ°ü¡£SAMBAÊÇÔÚUNIXÏ¿ÉÒÔÓëWindows¹²ÏíÎļþºÍ´òÓ¡»úµÄ¿ª·ÅÔ´ÂëÈí¼þ°ü¡£ËüÒ²¿ÉÒÔÓëÆäËüÔËÐÐCIFSºÍSMBЭÒéµÄ²Ù×÷ϵͳ¹²Í¬¹¤×÷¡£Äã¿ÉÒÔÔÚhttp://www.samba.orgÈ¡µÃ¹ØÓÚSAMBAµÄ¸ü¶àÐÅÏ¢¡£\r\nSnort¸æ¾¯»úÖÆÀûÓÃUNIXµÄsmb¿Í»§¶Ë³ÌÐòÀ´Á¬½ÓWindowsÐÅÏ¢²¢·¢Ë͸澯¡£µ±ÄãʹÓÃÕâÏî·þÎñ֮ǰ£¬ÏÈÈ·¶¨SAMBA¿Í»§¶ËÊÇ·ñÕý³£¹¤×÷¡£ÔÚRedHatϵͳÖУ¬SAMBAµÄ²Ù×÷ÒÀÀµÓÚÅäÖÃÎļþ/etc/samba/smb.conf£¬ÔÚÆäËûµÄUnixϵͳÖУ¬Õâ¸öÎļþÒ²Ðí»áÔÚ²»Í¬µÄλÖ᣾¡¹ÜSAMBAµÄÏêϸÌÖÂÛÒѾ­³¬¹ýÁ˱¾ÊéÉæ¼°µÄ·¶Î§£¬»¹ÊÇÔÚÏÂÃæÁоÙÒ»¸öSAMBAÅäÖõÄÑù±¾Îļþ¡£Õâ¸öÎļþ¿ÉÒÔÓÃÀ´ÅäÖÃsmbʹ֮ÉúЧ£¬Ëü´´½¨Ò»¸ö¿ÉÒÔÔÚWindows»úÆ÷ÉÏ¿´µ½µÄREHMAN¹¤×÷×é¡£\r\n2.8.7.1 SambaÅäÖÃÎļþÑù±¾\r\n/etc/smba/smb.confµÄÑù±¾ÎļþÈçÏ£º\r\n[global]\r\nworkgroup = REHMAN\r\nserver string = REHMAN file server\r\nlog file = /var/log/samba/log.%m\r\nmax log size = 50\r\nsecurity = user\r\nencrypt passwords = yes\r\nsocket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192\r\ndns proxy = no\r\ndomain logons = no\r\nunix password sync = no\r\nmap to guest = never\r\npassword level = 0\r\nnull passwords = no\r\nos level = 0\r\npreferred master = yes\r\ndomain master = yes\r\nwins support = yes\r\ndead time = 0\r\ndebug level = 0\r\nload printers = yes\r\n[homes]\r\ncomment = Home Directories\r\nbrowseable = yes\r\nwritable = yes\r\navailable = yes\r\npublic = yes\r\nonly user = no\r\n[htmldir]\r\ncomment = html stuff\r\npath = /home/httpd/html\r\npublic = yes\r\nwritable = yes\r\nprintable = no\r\nwrite list = rehman\r\n[virtualhosting]\r\ncomment = html stuff\r\npath = /usr/virt_web\r\npublic = yes\r\nwritable = yes\r\nprintable = no\r\nwrite list = rehman\r\n[printers]\r\n[netlogon]\r\navailable = no\r\n        ¹ØÓÚSMB¸æ¾¯µÄ¸ü¶àÐÅÏ¢½«ÔÚºóÃæµÄÕ½ÚÖгöÏÖ¡£×¢Ò⣬Èç¹ûÄãÏëÓÃÕâ¸ö¹¦ÄÜ£¬ÄãÓ¦¸ÃÔÚ±àÒëSnortµÄʱºòÓáªwith-sabalertsµÄÑ¡Ï·ñÔòSnort¾Í²»ÄÜÓÃSAMBA·þÎñÀ´¹¤×÷¡£\r\n\r\n2.9 ÔÚÒþÃØģʽÏÂÔËÐÐSnort\r\n        ÔÚijЩÇé¿öÏ£¬Äã»áÏ£ÍûÔÚÒþÃØģʽÏÂÔËÐÐSnort,ÕâÑùÆäËûµÄÖ÷»ú²»»á̽²âµ½Snort»úÆ÷µÄ´æÔÚ£¬»»¾ä»°Ëµ£¬Snort¶ÔÓÚÈëÇÖÕß»òÆäËûÈËÊDz»¿É¼ûµÄ¡£ÓжàÖÖ·½·¨¿ÉÒÔʹSnortÔÚÒþÃØģʽÏÂÔËÐС£ÆäÖÐÖ®Ò»ÊÇÔÚûÓÐÅäÖÃIPµØÖ·µÄ½Ó¿ÚÉÏÔËÐÐSnort£¬ÕâÊʺÏÓÚÏÂÁÐÁ½ÖÖÇé¿ö£º\r\nÖ»ÓÐÒ»¸öÍøÂçÊÊÅäÆ÷µÄ¶ÀÁ¢Snort̽²âÆ÷¡£\r\nÒ»¸ö°²×°ÁËÁ½¸öÍøÂçÊÊÅäÆ÷µÄSnort̽²âÆ÷£ºÒ»¸öÓÃÀ´ÔÚ¹ÂÁ¢µÄÍøÂçÉÏÓÃÀ´·ÃÎÊ̽²âÆ÷£¬ÁíÍâÒ»¸öÁ¬½Óµ½¹«ÖÚÍøÂç²¢ÔÚÒþÃØģʽÔËÐÐSnort¡£ÕâÖÖ·½·¨Èçͼ2-3Ëùʾ£ºÍøÂç½Ó¿Úeth1Á¬½Óµ½¹ÂÁ¢µÄ˽ÓÐÍøÂ磬eth0Á¬½Óµ½¹«ÖÚÍøÂç¡£\r\nµ±ÄãÏë·ÃÎÊ̽²âÆ÷µÄʱºò£¬ÒªÍ¨¹ý¾ßÓÐIPµØÖ·µÄÍøÂç½Ó¿Úeth1¡£Í¼ÖÐËùʾµÄ¹ÜÀí¹¤×÷Õ¾¿ÉÒÔÓÃÀ´Á¬½Óµ½Ì½²âÆ÷£¬ÒÔÊÕ¼¯Êý¾Ý£¬»ò½«ÐÅÏ¢¼Í¼µ½ÔËÐÐÔÚ±¾»ú»òÆäËûÁ¬½Óµ½±¾»úµÄÊý¾Ý¿â·þÎñÆ÷µÄÖÐÑëÊý¾Ý¿â¡£\r\n        Á¬½Óµ½InternetµÄÍøÂç½Ó¿Úeth0ÉÏûÓÐÅäÖÃIPµØÖ·£¬ËüÔËÐÐÔÚÒþÃØģʽÏ£¬µ«ÊÇÈÔÈ»¿ÉÒÔ¼àÌý´Ë¶ÎÍøÂçµÄÊý¾ÝÁ÷¡£\r\n        ÔÚeth0ÉÏÔËÐÐSnort֮ǰ£¬Äã±ØÐ뽫Ëü¼¤»î£¬ÔÚLinuxϵͳÖУ¬Äã¿ÉÒÔÓÃÏÂÃæµÄÃüÁîÀ´ÊµÏÖ£º\r\n                        ifconfig eth0 up\r\n        Õâ¸öÃüÁî¿ÉÒÔʹ½Ó¿ÚÔÚûÓÐIPµØÖ·µÄÇé¿öÏ¿ÉÓã¬È»ºó£¬Äã¿ÉÒÔÓá°-i eth0¡±µÄÃüÁîÐÐÑ¡ÏîÔÚÕâ¸ö½Ó¿ÚÆô¶¯Snort:\r\n                        snort -c /opt/snort/etc/snort.conf -i eth0 -D