Snort Installation in CentOS


How to Install Snort Firwall In CentOS:-

  1.   Preparation 

    • Make Sure That your System is updated:-
      • yum update
      • reboot no
    • Some of Snort 3 dependencies will be installed from source.Create a directory that will hold the source code.
      •  mkdir sources && cd source
    • This Package is just for completing the snort installation.And Can be removed later on.
      • yum install  vim git wget  
    • Installing Required Packages for Snort.
      • yum install flex bison gcc gcc-c++ make  
      • Make Sure Operating have Latest version of Cmake
      • yum remove cmake
      • wget
      • tar xf cmake-3.12.0.tar.gz && cd cmake-3.12.0
      • ./configure
      • make –j 8
      • make install
  2. Installing Snort 3 Required Dependencies.

    • Snort 3 required dependencies are installed from both the CentOS base repository and packages source code. 
      •  yum install libdnet-devel hwloc-devel openssl-devel zlib-devel pkgconfig 
    • Installing Luajit 
    •  Installing PCRE 
      • The pcre package(8.32) in the base repository, while compatible with Snort3,is older than the latest version(8.42), and some of Snort 3 optional requirements, Hyperscan, warns that pcre version 8.41 is not installed.
      •  wget
      • tar xf libpcap-1.9.0.tar.gz &&cd libpcap-1.9.0
      • ./configure --libdir=/usr/lib6 --includedir=/usr/include
      • make && make install
    •  Some of the daq modules can be disabled if not used.The example below configures daq for afpacket while disabling other modules and enabling IPv6 support:
      • ./configure --disable-ipfw-module --disable-ipq-module --disable-nfq-module --enable-ipv6
      • make
      • make install
  3.  Installing and Verifying Snort 3 Installation.

    • git clone
    • cd snort 3 
    • export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib:/usr/local/lib
    • ./  --prefix=/usr/local/snort --enable-tcmalloc
    • cd build
    • make -j 8
    • make install
    • ldd /usr/local/snort/bin/snort
    • /usr/local/snort/bin/snort –V

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