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сервис_snort
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сервис_snort [2017/07/05 12:21] val [FreBSD/Debian/Ubuntu] |
сервис_snort [2022/03/15 13:01] val [Debian/Ubuntu] |
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| Line 6: | Line 6: | ||
| * [[http://www.openinfosecfoundation.org//Альтернативное решение]] | * [[http://www.openinfosecfoundation.org//Альтернативное решение]] | ||
| ===== Установка, настройка, запуск сервиса ===== | ===== Установка, настройка, запуск сервиса ===== | ||
| - | |||
| - | ==== FreeBSD ==== | ||
| - | |||
| - | <code> | ||
| - | [server:~] # pkg install snort | ||
| - | |||
| - | [server:~] # cat /usr/local/etc/snort/snort.conf | ||
| - | </code><code> | ||
| - | ... | ||
| - | ipvar HOME_NET [192.168.X.0/24] | ||
| - | ... | ||
| - | #################################################################### | ||
| - | # Step #6: Configure output plugins | ||
| - | ... | ||
| - | # syslog | ||
| - | output alert_syslog: LOG_AUTH LOG_ALERT | ||
| - | ... | ||
| - | ################################################### | ||
| - | # Step #7: Customize your rule set | ||
| - | ... | ||
| - | # site specific rules | ||
| - | include $RULE_PATH/local.rules | ||
| - | include $RULE_PATH/community.rules | ||
| - | ... | ||
| - | # закомментируйте все правила ниже | ||
| - | ... | ||
| - | </code><code> | ||
| - | [server:~] # fetch --no-verify-peer https://www.snort.org/downloads/community/community-rules.tar.gz | ||
| - | |||
| - | [server:~] # tar -xvf community-rules.tar.gz | ||
| - | |||
| - | [server:~] # cp community-rules/community.rules /usr/local/etc/snort/rules/ | ||
| - | [server:~] # touch /usr/local/etc/snort/rules/local.rules | ||
| - | [server:~] # cp community-rules/sid-msg.map /usr/local/etc/snort/sid-msg.map | ||
| - | |||
| - | [server:~] # mkdir /usr/local/etc/rules/ | ||
| - | [server:~] # touch /usr/local/etc/rules/black_list.rules | ||
| - | [server:~] # touch /usr/local/etc/rules/white_list.rules | ||
| - | |||
| - | !!! Раскомментировать правило | ||
| - | [server:~] # cat /usr/local/etc/snort/rules/community.rules | ||
| - | </code><code> | ||
| - | ... | ||
| - | alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"WEB-IIS CodeRed v2 root.exe access"; flow:to_server,established; uricontent:"/root.exe"; nocase; metadata:service http; reference:url,www.cert.org/advisories/CA-2001-19.html; classtype:web-application-attack; sid:1256; rev:11;) | ||
| - | ... | ||
| - | </code> | ||
| - | <code> | ||
| - | [server:~] # # cd /usr/local/etc/snort/preproc_rules/ | ||
| - | [server:~] # # cp sensitive-data.rules-sample sensitive-data.rules | ||
| - | [server:~] # # cp decoder.rules-sample decoder.rules | ||
| - | [server:~] # # cp preprocessor.rules-sample preprocessor.rules | ||
| - | </code> | ||
| - | |||
| - | <code> | ||
| - | [server:~] # snort -T -c /usr/local/etc/snort/snort.conf | ||
| - | |||
| - | [server:~] # snort -A console -i em2 -c /usr/local/etc/snort/snort.conf | ||
| - | |||
| - | [server:~] # service snort rcvar | ||
| - | |||
| - | [server:~] # cat /etc/rc.conf | ||
| - | </code><code> | ||
| - | ... | ||
| - | snort_enable=YES | ||
| - | snort_interface=em2 | ||
| - | </code><code> | ||
| - | [server:~] # service snort start | ||
| - | </code> | ||
| ==== Debian/Ubuntu ==== | ==== Debian/Ubuntu ==== | ||
| <code> | <code> | ||
| root@server:~# apt install snort | root@server:~# apt install snort | ||
| + | |||
| + | !!! В визарде все по умолчанию ("не понимает" интерфейс bond1) | ||
| root@server:~# cat /etc/snort/snort.debian.conf | root@server:~# cat /etc/snort/snort.debian.conf | ||
| Line 83: | Line 17: | ||
| ... | ... | ||
| DEBIAN_SNORT_INTERFACE="eth2" | DEBIAN_SNORT_INTERFACE="eth2" | ||
| + | #DEBIAN_SNORT_INTERFACE="eth1" | ||
| + | #DEBIAN_SNORT_INTERFACE="bond1" | ||
| DEBIAN_SNORT_HOME_NET="192.168.0.0/16" | DEBIAN_SNORT_HOME_NET="192.168.0.0/16" | ||
| + | #DEBIAN_SNORT_HOME_NET="any" | ||
| ... | ... | ||
| </code><code> | </code><code> | ||
| Line 97: | Line 34: | ||
| root@server:~# snort -T -S HOME_NET=[192.168.0.0/16] -c /etc/snort/snort.conf | root@server:~# snort -T -S HOME_NET=[192.168.0.0/16] -c /etc/snort/snort.conf | ||
| - | root@server:~# service snort stop | + | root@server:~# service snort restart |
| - | + | ||
| - | root@server:~# snort -A console -i eth2 -S HOME_NET=[192.168.0.0/16] -c /etc/snort/snort.conf | + | |
| - | + | ||
| - | root@server:~# service snort start | + | |
| </code> | </code> | ||
| ===== Тестирование ===== | ===== Тестирование ===== | ||
| - | ==== FreeBSD/Debian/Ubuntu ==== | + | ==== Debian/Ubuntu ==== |
| <code> | <code> | ||
| - | # tail -f /var/log/auth.log | + | # tail -f /var/log/auth.log | grep Red |
| </code> | </code> | ||
| - | ==== Пример атаки с server.isp.un ==== | + | ==== Пример атаки с isp.un ==== |
| <code> | <code> | ||
| - | server.isp.un$ wget http://server.corpX.un/root.exe | + | isp.un$ wget http://192.168.X.10/root.exe |
| </code> | </code> | ||
| - | |||
| - | |||
| ===== Создание собственных правил snort ===== | ===== Создание собственных правил snort ===== | ||
| - | [[http://oreilly.com/pub/h/1393]] | + | * [[http://oreilly.com/pub/h/1393|Write Your Own Snort Rules ]] |
| - | ==== FreBSD/Debian/Ubuntu ==== | + | ==== Debian/Ubuntu ==== |
| <code> | <code> | ||
| # cat rules/local.rules | # cat rules/local.rules | ||
| Line 189: | Line 120: | ||
| ===== Дополнительные материалы ===== | ===== Дополнительные материалы ===== | ||
| + | |||
| + | ==== FreeBSD ==== | ||
| + | |||
| + | <code> | ||
| + | [server:~] # pkg install snort | ||
| + | |||
| + | [server:~] # cat /usr/local/etc/snort/snort.conf | ||
| + | </code><code> | ||
| + | ... | ||
| + | ipvar HOME_NET [192.168.X.0/24] | ||
| + | ... | ||
| + | #################################################################### | ||
| + | # Step #6: Configure output plugins | ||
| + | ... | ||
| + | # syslog | ||
| + | output alert_syslog: LOG_AUTH LOG_ALERT | ||
| + | ... | ||
| + | ################################################### | ||
| + | # Step #7: Customize your rule set | ||
| + | ... | ||
| + | # site specific rules | ||
| + | include $RULE_PATH/local.rules | ||
| + | include $RULE_PATH/community.rules | ||
| + | ... | ||
| + | # закомментируйте все правила ниже | ||
| + | ... | ||
| + | </code><code> | ||
| + | [server:~] # fetch --no-verify-peer https://www.snort.org/downloads/community/community-rules.tar.gz | ||
| + | |||
| + | [server:~] # tar -xvf community-rules.tar.gz | ||
| + | |||
| + | [server:~] # cp community-rules/community.rules /usr/local/etc/snort/rules/ | ||
| + | [server:~] # touch /usr/local/etc/snort/rules/local.rules | ||
| + | [server:~] # cp community-rules/sid-msg.map /usr/local/etc/snort/sid-msg.map | ||
| + | |||
| + | [server:~] # mkdir /usr/local/etc/rules/ | ||
| + | [server:~] # touch /usr/local/etc/rules/black_list.rules | ||
| + | [server:~] # touch /usr/local/etc/rules/white_list.rules | ||
| + | |||
| + | !!! Раскомментировать правило | ||
| + | [server:~] # cat /usr/local/etc/snort/rules/community.rules | ||
| + | </code><code> | ||
| + | ... | ||
| + | alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"WEB-IIS CodeRed v2 root.exe access"; flow:to_server,established; uricontent:"/root.exe"; nocase; metadata:service http; reference:url,www.cert.org/advisories/CA-2001-19.html; classtype:web-application-attack; sid:1256; rev:11;) | ||
| + | ... | ||
| + | </code> | ||
| + | <code> | ||
| + | [server:~] # # cd /usr/local/etc/snort/preproc_rules/ | ||
| + | [server:~] # # cp sensitive-data.rules-sample sensitive-data.rules | ||
| + | [server:~] # # cp decoder.rules-sample decoder.rules | ||
| + | [server:~] # # cp preprocessor.rules-sample preprocessor.rules | ||
| + | </code> | ||
| + | |||
| + | <code> | ||
| + | [server:~] # snort -T -c /usr/local/etc/snort/snort.conf | ||
| + | |||
| + | [server:~] # snort -A console -i em2 -c /usr/local/etc/snort/snort.conf | ||
| + | |||
| + | [server:~] # service snort rcvar | ||
| + | |||
| + | [server:~] # cat /etc/rc.conf | ||
| + | </code><code> | ||
| + | ... | ||
| + | snort_enable=YES | ||
| + | snort_interface=em2 | ||
| + | </code><code> | ||
| + | [server:~] # service snort start | ||
| + | </code> | ||
| ==== Windows ==== | ==== Windows ==== | ||
сервис_snort.txt · Last modified: 2022/03/30 12:43 by val
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