入侵检测系统 snort 安装配置

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centos下安装

安装时将apache 和mysql服务安装上

yum -y install mysql-bench mysql-devel php-mysql gcc pcre-devel php-gd gd glib2-devel gcc-c++ libpcap-devel

cd /root

mkdir  snort

cd snort

wget http://www.snort.org/downloads/867(snort-2.9.0.5.tar.gz)

wget http://www.snort.org/downloads/860(daq-0.5.tar.gz)

tar -xzvf snort-2.9.0.5.tar.gz

cd snort-2.9.0.5

./configure --with-mysql --enable-dynamicplugin

(if buliding for CentOs64 bit use the following instead ->./configure --with-mysql-libraries=/usr/lib64/mysql/ --enable-dynamicplugin)

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ERROR!  dnet header not found, go get it from http://code.google.com/p/libdnet/ or use the --with-dnet-* options, if you have
it installed in an unusual place

wget http://libdnet.googlecode.com/files/libdnet-1.12.tgz  

tar -xzvf libdnet-1.12.tgz  

cd libdnet-1.12.tgz  

./configure

make

make install

ERROR!  daq_static library not found, go get it from  http://www.snort.org/.

cd /root/snort/  

tar -xzvf daq-0.5.tar.gz  

cd daq-0.5.tar  ./configure  

make  

make install

如果出现报错ERROR! Libpcap library version >= 1.0.0 not found. Get it from http://www.tcpdump.org

yum erase  libpcap-old

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make

make install

groupadd snort

useradd -g snort snort -s /sbin/nologin

mkdir /etc/snort

mkdir /etc/snort/rules

mkdir /etc/snort/so_rules

mkdir /var/log/snort

chown snort:snort /var/log/snort

cd etc(make sure you do not cd to /etc)

cp * /etc/snort

tar -xzvf snortrules-snapshot-2902.tar.gz

cd ./rules

cp *  /etc/snort/rules

cp  ../so_rules/precompiled/Centos-5-4/i386/2.9.0.2/*  /etc/snort/so_rules

wget https://www.snort.org/downloads/893

vi /etc/snort/snort.conf

修改如下

RULE_PATH ../rules     /etc/snort/rules

SO_RULE_PATH ../so_rules        /etc/snort/so_rules

在output部分添加如下

output unified2:filename snort.log,limit 128



配置数据库

echo "set password for root@localhost=password('123456');"|mysql -uroot -p

echo "create database snort;"|mysql -u root -p

mysql -u root -p -D snort <./schemas/create_mysql

echo "grant create,insert on root.* to snort@localhost;"|mysql -uroot -p

echo "set password for snort@localhost=password('123456');"| mysql -uroot -p

echo "grant create,insert,select,delete,update on snort.* to snort@localhost"|mysql -uroot -p



install and configure base(basic analysis and security engine and adodb)

use the following commmand to install php_pear and some additional supporting files to allow for

graphing within base to function properly:

#yum -y install php-pear_number_roman php-pear_numbers_words php-pear_image_color php-pear_canvas

php-pear_image_graph

wget http://pear.php.net/go-pear.phar

php go-pear.phar
http://pear.php.net/manual/en/installation.php

pear install Numbers_Roman

pear install Numbers_Words

pear install Image_Color

pear install Image_Canvas

pear install Image_Canvas

pear install Image_Graph

wget http://sourceforge.net/projects/adodb/files/adodb-php5-only/adodb-511-for-php5/adodb511.zip/download

wget http://sourceforge.net/projects/secureideas/files/BASE/base-1.4.5/base-1.4.5.tar.gz/download

install adodb

cd /var/www

tar -xzvf  adodb511.tgz

mv   adodb5 adodb

install   and config base

cd /var/www/html/

tar -xzvf base-1.4.5.tar.gz

cd base-1.4.5

cp base_conf.php.dist  base_conf.ph

chown pigg.games base_conf.php

edit "base_config.php" and insert the following parameters

$BASE_urlpath='/base';

$DBlib_path='/var/www/adodb';

$DBtype='mysql';

$alert_dbname='snort';

$alert_host='localhost';

$alert_port='';

$alert_user='snort';

$alert_password='password created in mysql section above for snort user';

/*archive db connnection parameters */

$archive_exists=0;#set this to 1 if you have an archive db/* access your sensor at the following address: */
[url=]https://<ip[/url] address of sensor>/base

click on "setup page" then click on "create base ag".

securing the base directory:

mkdir /var/www/passwords

htpasswd -c /var/www/passwords/passwords base

password:123456

edit the httpd.conf

<Directory "/var/www/html/base">

            AuthType Basic

            AuthName "SnortIDS"

            AuthUserFile /var/www/passwords/passwords

            Require user  base

</Directory>



Installing  Barnyard2

barnyard2 improves the efficicency of snort by reducing the load on the main detection engine by allowing

barnyard2 to handle the inserting of events into the mysql database.

wget https://download.github.com/firnsy-barnyard2-v2-1.9-12-g01f5581.tar.gz

tar -xzvf firnsy-barnyard2-v2-1.9-12-g01f5581.tar.gz

cd firnsy-barnyard2-01f5581

./configure --with-mysql

(if building for centos 64 bit use the following instead -> ./configure --with-mysql-libraries=/usr/lib64/mysql/)

make

make install

cp etc/barnyard2.conf /etc/snort/      

mkdir /var/log/barnyard2

chmod 666  /var/log/barnyard2

touch  /var/log/snort/barnyard2.waldo

chown snort:snort /var/log/snort/barnyard2.waldo

Edit /etc/snort/barnyard2.conf and modify the following lines.

#config hostname:thor

#config interface:eth0

#output database:log,mysql,user=root password=test dbname=db host=localhost

Remove the#sign from the lines above and change to the below:

config hostname:localhost

config interface:eth0(if using multiple interfaces this should be eth1)

output database:log,mysql,user=snort password='password created in mysql section above for snort user' dbname=snort host=localhost
testing snort:

you can lauch snort from the commmand line to make sure that it loads properly. Enter the following command:

/usr/local/bin/snort -u snort -g snort -c /etc/snort/snort.conf -i eth0

(如果出现报错：/usr/local/bin/snort: error while loading shared libraries: libdnet.1: cannot open shared object file: No such file or directory

ln -s   /usr/local/lib/libdnet.1  /usr/lib/libdnet.1
ln -s   /usr/local/lib64/libdnet.1  /usr/lib/libdnet.1）
/usr/local/bin/barnyard2 -c /etc/snort/barnyard2.conf -d /var/log/snort -f snort.log -w /var/log/snort/barnyard2.waldo -D

setting up snort $barnyard2 to start automatically:




ERROR: parser.c(5161) Could not stat dynamic module path "/usr/local/lib/snort_dynamicrules": No such file or directory.Quick solution :

mkdir /usr/local/lib/snort_dynamicrules
cd /usr/local/lib/snort_dynamicrules


copy all .so of rules or the ones that snort wants (depends on your configuration)

ERROR: OpenAlertFile() => fopen() alert file /var/log/snort/alert: No such file or directory

Quick solution:

mkdir /var/log/snort
vim /var/log/snort/alert
OK


edit /etc/rc.loacl

#ifconfig eth0 up

/usr/local/bin/snort -u snort -g snort -c /etc/snort/snort.conf -i eth0

/usr/local/bin/barnyard2 -c /etc/snort/barnyard2.conf -d /var/log/snort -f snort.log -w /var/log/snort/barnyard2.waldo -D
/etc/rc.local start