How to Install Security Onion 1. Did you know Security Onion It is a Linux distro specialized on network security monitoring and intrusion prevention, simplify the whole network management with a Ubuntu based distro that you can start using with just few steps. It comes with many valuable security software to monitor your network in realtime or perform analysis on pcap files andor system logs. Today I will drive you through the installation proccess on a step by step basis. At the end of this article you have it installed on your machine and will be able to start to monitor your network traffic and host activity using its tools. Here are tools you will find on Security Onion Reassemblertcpdump. OSSEChunt. Squert. Xplicotshark. Brodsniff. ELSAtcpxtractngrep. Snortsslsniff. Snorbytcpstat. Wireshark. Suricatamergecapsguiltcpslicessldumpbarnyard. Network. Mineru. 2boatnetsniff ng. Sniffitscapy. Argusu. Top 100 of the Best Useful OpenSource Applications 022808. The following is a list of about 100 of the best OpenSource Applications, that. Daemonloggernetsedlabreahping. Download Security Onion. Download the Security Onion ISO from Github. In fact Security Onion can even be installed on distros based on Ubuntu, however this will not be covered here,  here is how to install Security Onion on Ubuntu. Boot. As you start the system with the Security Onion media you will be presented with the following screen, just hit the install option. How To Install Adobe Flash Player Ubuntu Terminal Command List' title='How To Install Adobe Flash Player Ubuntu Terminal Command List' />We have flash player on our windows servers and I was assigned to uninstall them, but the catch here is that I cant use any external software therefore I cant. On Monday, we learned that Microsoft was killing off the iconic Microsoft Paint program after 32 years and replacing it with Paint 3D in its upcoming Windows 10 update. Explains how to play MP3s, play DVDs, install Flash, see PDFs and other useful tips for Fedora users. How To Install Adobe Flash Player Ubuntu Terminal Command TutorialBoot screen. Install Security Onion. Once you select the install option the system will start to boot and then show the setup screen. Part I Operating System. First thing to set is the Operating System language. Select language. Now decide either to use or not 3rd party technology, such as Flash player or MP3 codecs. Third party software. Select how the system will be installed on your hard disk, the disk encryption and LVM setups dig not worked out of the box, so if you are no familiarized with it just click install and then continue when asked. Setup HD install. Now select the location, this will set the locale datetime options, click on your country then continue. Select your keyboard layout, use the detection tool if in doubt. In this article we will explain how to install Adobe Flash Player 11. RHELCentOS 76 and Fedora 2520 using Adobes own repository. Keyboard layout. Then set your credentials, you will have to answer the following Your name. Computer  name. Username. Password. Confirm password. Antivirus For Linux Mint Maya more. Set it to ask for a password during systems startup. Your credentials. Note Do not select the encrypt me home  folder option, despite I did not tried it myself but people complain about that on forums. At the end of this process restart the system to boot from hard disk. Part II Network. Once system restarts you can run the setup script from the desktop, then give the password you set on the last step when asked. Then it asks if you want to set up your network interfaces, choose Yes to setup network. Setup network interfaces. Choose network configuration method to use, we are going to use static configuration. Network configuration mode. Set the IP Address of this machine. Set IP address. Set the network mask. Set network mask. Set  IP of the gateway. Set gateway. Set the DNS servers IP. Set DNS servers. Set the local domain. Set local domain. Set any special network settings if needed, then reboot the system again. Reboot. Part III Sensors and servers. Run the setup script from the desktop again when system restarts and follow the next steps. First you choose which mode of the install script to run, We are going to run the Production mode here to show you details. Setup mode. Select which mode Sguil will be installed sensor Install agents for monitoring. Install service to manage the monitoring. Install both, sensors and server, we are going to use this one. Sguil mode. Set a username for Sguil, ELSA and Squert interfaces. Sguil username. Define a password and confirm. Sguil password. Set how many days to keep the log. Days to keep. Set the numbers of days to repair My. SQL tables. Days to repair. Select IDS engine to use, either Snort or Suricata. Select IDS engine. Select the IDS ruleset to use. Select IDS ruleset. Set the minimum number of PFRING slots. Enable the use of IDS engine. Enable IDS engine. Enable Bro network analysis framework. Enable Bro. Enable the executable file extraction feature of Bro. This feature helps a lot to identify malware. Enable exe extraction. Disable bro httpagent to save resources if your are goingto use ELSA. Disable httpagent. Enable argus session management. Enable Argus. Disable  Prads asset management aas we are using Bros conn. Disable Pradis. Enable full packet capture, this is strongly recommended unless denied by disk limitations. Enable full packet capture. Specify the maximum pcap file size in megabytes. This will dpend on  your needs and disk availability but something between 1. Set pcap file size. Enable mmap IO for pcap files on netsniff ng for best performance if you have a reasonable amount of memory. Enable mmap on netsniff ng. Set the minimum space available on the disk to start purging  pcap files. Disk free space. Disable Salt configuration management system unless you are going to run more nodes. Disable Salt. Enable ELSA log framework. Enable ELSAConclusion. You are done, Security Onion must be working at this point. You can start using the tools to inspect your environment now. Here are some screenshots. Sguil on alert generated by a request to testmyids. Network Miner. Sguil and Network. Miner. Squert view on the same event. Squert GPL attack. ELSA search relative to the event. ELSA GPL attack event. The event above can be analyzed in many other ways on different Security Onion tools, we can go from a simple alert to the very instructions within some malware, it will depend on the incident. This is not the case here, maybe on posts to come we dig deeper on malware forensics or other uses for the security onion tools.