×ðÁú¿­Ê±

ÔõÑùʹÓÃÍøÂçÈëÇÖ¼ì²âϵͳ£¨NIDS£©± £»¤CentOSЧÀÍÆ÷

ÔõÑùʹÓÃÍøÂçÈëÇÖ¼ì²âϵͳ£¨nids£©± £»¤centosЧÀÍÆ÷

СÐò:

ÔÚÏÖ´úÍøÂçÇéÐÎÖÐ £¬Ð§ÀÍÆ÷Çå¾²ÐÔÊÇÖÁ¹ØÖ÷ÒªµÄ¡£¹¥»÷ÕßʹÓÃÖÖÖÖÊÖ¶ÎʵÑéÈëÇÖ×ðÁú¿­Ê±Ð§ÀÍÆ÷ £¬²¢ÇÔÈ¡Ãô¸ÐÊý¾Ý»òÕßÆÆËðϵͳ¡£ÎªÁËÈ·±£Ð§ÀÍÆ÷µÄÇå¾²ÐÔ £¬ÎÒÃÇ¿ÉÒÔʹÓÃÍøÂçÈëÇÖ¼ì²âϵͳ£¨NIDS£©¾ÙÐÐʵʱ¼à¿ØºÍ¼ì²âDZÔڵĹ¥»÷¡£

±¾ÎĽ«ÏÈÈÝÔõÑùÔÚCentOSЧÀÍÆ÷ÉÏÉèÖúÍʹÓÃNIDSÀ´± £»¤Ð§ÀÍÆ÷¡£

°ì·¨1£º×°ÖúÍÉèÖÃSNORT

SNORTÊÇÒ»¸ö¿ªÔ´µÄÈëÇÖ¼ì²âϵͳ £¬ÎÒÃÇ¿ÉÒÔʹÓÃËüÀ´¼à¿ØÍøÂçÁ÷Á¿²¢¼ì²â¿ÉÄܵĹ¥»÷¡£Ê×ÏÈ £¬ÎÒÃÇÐèҪװÖÃSNORT¡£

·­¿ªÖն˲¢Ê¹ÓÃrootȨÏ޵ǼЧÀÍÆ÷¡£

ʹÓÃÒÔÏÂÏÂÁîÀ´×°ÖÃSNORT£º

yum install epel-release
yum install snort

µÇ¼ºó¸´ÖÆ

×°Öÿ¢Êºó £¬ÎÒÃÇÐèÒªÉèÖÃSNORT¡£Ê×ÏÈ £¬ÎÒÃÇÐèÒª½¨ÉèÒ»¸öеÄÉèÖÃÎļþ¡£Ê¹ÓÃÒÔÏÂÏÂÁÉè²¢·­¿ªÒ»¸öеÄÉèÖÃÎļþ£º

cp /etc/snort/snort.conf /etc/snort/snort.conf.backup
vim /etc/snort/snort.conf

µÇ¼ºó¸´ÖÆ

ÔÚÉèÖÃÎļþÖÐ £¬¿ÉÒÔƾ֤ÐèÒª¶ÔSNORT¾ÙÐÐ×Ô½ç˵ÉèÖá£ÁíÍâ £¬È·±£uncommentÒÔϼ¸ÐÐ £¬ÒÔÆôÓÃÏìÓ¦µÄ¹¦Ð§£º

include $RULE_PATH/local.rules
include $RULE_PATH/snort.rules
include $RULE_PATH/community.rules

µÇ¼ºó¸´ÖÆ

ÉúÑIJ¢¹Ø±ÕÉèÖÃÎļþ¡£

°ì·¨2£ºÉèÖÃNIDS¹æÔò

ÔÚSNORTÖÐ £¬¹æÔòÓÃÓÚ½ç˵ÎÒÃÇÏ£Íû¼ì²âµÄ¹¥»÷ÀàÐÍ¡£ÎÒÃÇ¿ÉÒÔʹÓÃÒÑÓеĹæÔò¼¯»òÕß½¨Éè×Ô½ç˵¹æÔò¡£

·­¿ªÖն˲¢Ê¹ÓÃÒÔÏÂÏÂÁî½øÈëSNORT¹æÔòĿ¼£º

cd /etc/snort/rules/

µÇ¼ºó¸´ÖÆ

ʹÓÃÒÔÏÂÏÂÁîÏÂÔØ×îеĹæÔò¼¯£º

wget https://www.snort.org/downloads/community/community-rules.tar.gz
tar -xvf community-rules.tar.gz

µÇ¼ºó¸´ÖÆ

ÏÂÔغÍÌáÈ¡Íê³Éºó £¬ÎÒÃÇ¿ÉÒÔÔÚrulesĿ¼ÖÐÕÒµ½¹æÔòÎļþ¡£ÕâЩ¹æÔòÎļþ¾ßÓÐÀ©Õ¹ÃûΪ.rules¡£

ÈôÊÇÎÒÃÇÏëÒªÌí¼Ó×Ô½ç˵¹æÔò £¬¿ÉÒÔ½¨ÉèÒ»¸öеĹæÔòÎļþ £¬²¢ÔÚÆäÖÐÌí¼Ó¹æÔò¡£ÀýÈç £¬ÎÒÃÇ¿ÉÒÔʹÓÃÒÔÏÂÏÂÁÉèÒ»¸öÃûΪcustom.rulesµÄ¹æÔòÎļþ£º

vim custom.rules

µÇ¼ºó¸´ÖÆ

ÔÚ¹æÔòÎļþÖÐ £¬ÎÒÃÇ¿ÉÒÔÌí¼Ó×Ô½ç˵¹æÔò¡£ÒÔÏÂÊÇÒ»¸öʾÀý£º

alert tcp any any -> any any (msg:"Possible SSH brute force attack"; 
                         flow:from_client,established; content:"SSH-"; 
                         threshold:type limit, track by_src, count 5, 
                         seconds 60; sid:10001; rev:1;)

µÇ¼ºó¸´ÖÆ

ÉúÑIJ¢¹Ø±Õ¹æÔòÎļþ¡£

°ì·¨3£ºÆô¶¯SNORT²¢¼à¿ØÁ÷Á¿

ÉèÖÃSNORTºÍ¹æÔòºó £¬ÎÒÃÇ¿ÉÒÔÆô¶¯SNORT²¢×îÏȼà¿ØÁ÷Á¿¡£

·­¿ªÖն˲¢Ê¹ÓÃÒÔÏÂÏÂÁîÆô¶¯SNORT£º

snort -A console -c /etc/snort/snort.conf -i eth0

µÇ¼ºó¸´ÖÆ

ÆäÖÐ £¬-A consoleÖ¸¶¨½«¾¯±¨ÐÂÎÅÊä³öµ½¿ØÖÆ̨ £¬-c /etc/snort/snort.confÖ¸¶¨Ê¹ÓÃÎÒÃÇ֮ǰÉèÖõÄSNORTÉèÖÃÎļþ £¬-i eth0Ö¸¶¨Òª¼à¿ØµÄÍøÂç½Ó¿Ú¡£

SNORT½«×îÏȼà¿ØÁ÷Á¿²¢¼ì²âDZÔڵĹ¥»÷¡£ÈôÊÇÓÐÈκοÉÒɵÄÔ˶¯ £¬Ëü½«ÌìÉú¾¯±¨ÐÂÎŲ¢½«ÆäÊä³öµ½¿ØÖÆ̨¡£

°ì·¨4£ºÉèÖÃSNORT¾¯±¨Í¨Öª

ΪÁËÄܹ»ÊµÊ±»ñÈ¡¾¯±¨ÐÂÎÅ £¬ÎÒÃÇ¿ÉÒÔʹÓÃÓʼþ֪ͨ¹¦Ð§À´½«¾¯±¨ÐÂÎÅ·¢Ë͵½×ðÁú¿­Ê±µç×ÓÓʼþµØµã¡£

·­¿ªÖն˲¢Ê¹ÓÃÒÔÏÂÏÂÁî×°ÖÃÓʼþ֪ͨ²å¼þ£º

yum install barnyard2
yum install sendmail

µÇ¼ºó¸´ÖÆ

×°ÖÃÍê³Éºó £¬ÎÒÃÇÐèÒª½¨ÉèÒ»¸öеÄÉèÖÃÎļþ¡£Ê¹ÓÃÒÔÏÂÏÂÁÖÆʾÀýÉèÖÃÎļþ²¢·­¿ªÒ»¸öеÄÉèÖÃÎļþ£º

cp /etc/barnyard2/barnyard2.conf /etc/barnyard2/barnyard2.conf.backup
vim /etc/barnyard2/barnyard2.conf

µÇ¼ºó¸´ÖÆ

ÔÚÉèÖÃÎļþÖÐ £¬ÕÒµ½ÒÔϼ¸Ðв¢×÷·Ï×¢ÊÍ£º

output alert_syslog_full
output database: log, mysql, user=snort password=snort dbname=snort host=localhost
output alert_fast: snort.alert

config reference_file: reference.config
config classification_file:classification.config
config gen_file: gen-msg.map
config sid_file: sid-msg.map

µÇ¼ºó¸´ÖÆ

ÐÞ¸ÄÒÔϼ¸ÐÐ £¬Æ¾Ö¤×ðÁú¿­Ê±SMTPЧÀÍÆ÷ºÍÓʼþÉèÖþÙÐÐÊʵ±Ð޸ģº

output alert_full: alert.full
output log_unified2: filename unified2.log, limit 128
output smtp: email@example.com

µÇ¼ºó¸´ÖÆ

ÉúÑIJ¢¹Ø±ÕÉèÖÃÎļþ¡£

ʹÓÃÒÔÏÂÏÂÁîÆô¶¯barnyard2£º

barnyard2 -c /etc/barnyard2/barnyard2.conf -d /var/log/snort/

µÇ¼ºó¸´ÖÆ

ÉÔºó £¬ÈôÊÇSNORT¼ì²âµ½¿ÉÒÉÔ˶¯ £¬Ëü½«ÌìÉú¾¯±¨ÐÂÎŲ¢½«Æä·¢Ë͵½ÎÒÃÇÖ¸¶¨µÄµç×ÓÓʼþµØµã¡£

½áÂÛ:

ͨ¹ý°²ÅÅÍøÂçÈëÇÖ¼ì²âϵͳ£¨NIDS£©À´± £»¤×ðÁú¿­Ê±CentOSЧÀÍÆ÷ÊǺÜÊÇÖ÷ÒªµÄ¡£ÎÒÃÇ¿ÉÒÔʹÓÃSNORTÀ´¼à¿ØÍøÂçÁ÷Á¿²¢¼ì²âDZÔڵĹ¥»÷¡£Í¨¹ý×ñÕÕ±¾ÎÄÖеİ취 £¬ÎÒÃÇ¿ÉÒÔÉèÖÃSNORT²¢ÉèÖùæÔòÀ´¼à¿ØºÍ± £»¤×ðÁú¿­Ê±Ð§ÀÍÆ÷¡£±ðµÄ £¬ÎÒÃÇ»¹¿ÉÒÔʹÓÃÓʼþ֪ͨ¹¦Ð§ÊµÊ±»ñÈ¡¾¯±¨ÐÂÎÅ¡£

ÒÔÉϾÍÊÇÔõÑùʹÓÃÍøÂçÈëÇÖ¼ì²âϵͳ£¨NIDS£©± £»¤CentOSЧÀÍÆ÷µÄÏêϸÄÚÈÝ £¬¸ü¶àÇë¹Ø×¢±¾ÍøÄÚÆäËüÏà¹ØÎÄÕ£¡

ÃâÔð˵Ã÷£ºÒÔÉÏչʾÄÚÈÝȪԴÓÚÏàÖúýÌå¡¢ÆóÒµ»ú¹¹¡¢ÍøÓÑÌṩ»òÍøÂçÍøÂçÕûÀí £¬°æȨÕùÒéÓë±¾Õ¾ÎÞ¹Ø £¬ÎÄÕÂÉæ¼°¿´·¨Óë¿´·¨²»´ú±í×ðÁú¿­Ê±ÂËÓÍ»úÍø¹Ù·½Ì¬¶È £¬Çë¶ÁÕß½ö×ö²Î¿¼¡£±¾ÎĽӴýתÔØ £¬×ªÔØÇë˵Ã÷À´ÓÉ¡£ÈôÄúÒÔΪ±¾ÎÄÇÖÕ¼ÁËÄúµÄ°æȨÐÅÏ¢ £¬»òÄú·¢Ã÷¸ÃÄÚÈÝÓÐÈκÎÉæ¼°ÓÐÎ¥¹«µÂ¡¢Ã°·¸Ö´·¨µÈÎ¥·¨ÐÅÏ¢ £¬ÇëÄúÁ¬Ã¦ÁªÏµ×ðÁú¿­Ê±ÊµÊ±ÐÞÕý»òɾ³ý¡£

Ïà¹ØÐÂÎÅ

ÁªÏµ×ðÁú¿­Ê±

18523999891

¿É΢ÐÅÔÚÏß×Éѯ

ÊÂÇéʱ¼ä£ºÖÜÒ»ÖÁÖÜÎå £¬9:30-18:30 £¬½ÚãåÈÕÐÝÏ¢

QR code
¡¾ÍøÕ¾µØͼ¡¿¡¾sitemap¡¿