CentOS 6.5snort installation
yum install pcre*
yum install gcc-c++
wget https://libdnet.googlecode.com/files/libdnet-1.12.tgz
tar -xzvf libdnet-1.12.tgz
./ configure;make;make install
wget https://www.snort.org/downloads/snort/daq-2.0.4.tar.gz
wget https://www.snort.org/downloads/snort/snort-2.9.7.2.tar.gz
tar xvfz daq-2.0.4.tar.gz
cd daq-2.0.4
./ configure
make
make install
tar xvfz snort-2.9.7.2.tar.gz
cd snort-2.9.7.2
./ configure --enable-sourcefire
make
make install
cp ./ snort-2.9.7.2/etc/snort.conf /etc/snort/
cp ./ snort-2.9.7.2/etc/threshold.conf /etc/snort/
https://www.snort.org/downloads/community/community-rules.tar.gz
tar -zxvf community-rules.tar.gz
cp community-rules/community.rules /etc/snort/rules/
#Start
snort -d -l /var/log/snort -c /etc/snort/snort.conf -D
The relevant settings will be continuously updated [to avoid false positives and omissions in the opening process, is the focus]