Use the strongest encryption type you can, preferable WPA2 Enterprise. One hole in any one of these spots can effectively bring most of the others down. Easy. We’ll break this list down into broad categories for your ease of reference. System hardening is needed throughout the lifecycle of technology, from initial installation, through configuration, maintenance, and support, to end-of-life decommissioning. If you really think the server is ready to go, and everything else on the list has been checked off, there’s one more thing to do; scan it. If there is any sensitive data at all in there, turn on auditing and make sure the data owner reviews the logs regularly for any inappropriate access. Have a standard configuration for each type of device to help maintain consistency and ease management. telnet, HTTP, Deny outgoing access unless explicitly required, Authenticate all terminal and management access using centralized (or local) AAA, Authenticate all EXEC level terminal and management access using centralized (or local) AAA, Authorize all interactive and privileged EXEC level device management access using centralized (or local) AAA, Enforce an idle timeout to detect and close inactive sessions, Enforce an active session timeout to restrict the maximum duration of a session prior to re-authentication, Detect and close hung sessions, e.g. There is a lot of stuff to do to make sure your network is as secure as can be, so tackle this the same way you would eat an elephant…one bite at a time. We’ll start with some recommendations for all network equipment, and then look at some platform specific recommendations. When a tape has reached its end of life, destroy it to ensure no data can be recovered from it. Secure Sockets Layer (SSL/TLS) is essential for … Never assign permissions to individual users; only use domain groups. Using this checklist as a starting point, and working with the rest of your IT team, your management, human resources, and your legal counsel, you will be able to create the ultimate network security checklist for your specific environment. Mistakes to avoid. Network Access Control is the solution for providing access control to corporate networks. Use a logging solution that gathers up the logs from all your servers so you can easily parse the logs for interesting events, and correlate logs when investigating events. You should not do or apply only one. Trust me, one of these days you will have no choice but to give some travelling user the local admin account, and if that is the same across all machines, you will then have to reset them all. Consider using a host intrusion prevention or personal firewall product to provide more defense for your workstations, especially when they are laptops that frequently connect outside the corporate network. That means the company network is now hosting pirated content. Never let this be one of the things you forget to get back to. Every server deployed needs to be fully patched as soon as the operating system is installed, and added to your patch management application immediately. Critical Updates. This needs to be done first, and repeatedly, with at least an annual review and update. Ensure that your edge devices will reject directory harvest attempts. Reconsider your directory structure and the higher level permissions, and move that special case file or directory somewhere else to avoid using Deny Access. You don’t want any holes in your defences. Workstations check a central server for updates at least every six hours, and can download them from the vendor when they cannot reach your central server. P Do not install a printer. This article hit the spot for business owners for their business network security because having a very effective security can prevent data loss that may also result to profit loss. If you answered yes, you’re doing it wrong. Be extra careful about downloading pirated DVD screener movies especially if it contains subtitles (usually it has a .srt file extension). Network hardening is fundamental to IT security. Computer security training, certification and free resources. Include in this list when the physical hardware goes out of warranty, and when the operating system goes into extended support, so you can track and plan for hardware replacement and operating system upgrades or server replacements. [ulp id=”cbiKoDdv59CzTKSA”] Submitted for your approval, the Ultimate Network Security Checklist-Redux version. Network hardening is the process of securing a network by reducing its potential vulnerabilities through configuration changes, and taking specific steps. We specialize in computer/network security, digital forensics, application security and IT audit. Wonderful website. Roger Willson February 27, 2012 at 9:15 am. You get centralized management, and a single user account store for all your users. Set up and maintain an approved method for remote access, and grant permissions to any user who should be able to connect remotely, and then ensure your company policy prohibits other methods. All rights reserved. Use a script to create random passwords, and store them securely where they can be retrieved in an emergency. This checklist is a collection of all the hardening steps that are presented in this guide. Assign static IP addresses to all management interfaces, add A records to DNS, and track everything in an IP Address Management (IPAM) solution. Hardening refers to providing various means of protection in a computer system. Never repurpose tapes that were used to backup highly sensitive data for less secure purposes. NIST maintains the National Checklist Repository, which is a publicly available resource that contains information on a variety of security configuration checklists for specific IT products or categories of IT products. Here’s where most of the good stuff sits, so making sure your secure your fileshares is extremely important. Don’t just audit failures, or changes. It’s a text file, it could contain code that executes when it is open. Good write up. A great list indeed! or would like the information deleted, please email firstname.lastname@example.org from the email address you used when submitting this form. server hardening checklist General P Never connect an IIS server to the internet until it is fully hardened. If you look at every major hack that has hit the news in the past couple of years, from TJ Max to Target to Premera to the Office of Personnel Management…one thing could have prevented them all. Although, a simple password may keep off freeloaders from using up your bandwidth, it may never protect your from aggressive hackers who have no limits. When strange traffic is detected, its vital to have an up to date an authoritative reference for each ip.addr on your network. Have another run at least once a month that identifies accounts that have been disabled for 90 days, and deletes them. The built-in Remote Desktop service that comes with Windows is my preference, but if you prefer another, disable RDP. Checklist Summary: . Make sure you take regular backups of your configurations whenever you make a change, and that you confirm you can restore them. No production data should ever get onto a server until it is being backed up. Name it and I know them down to their source codes. Perform monthly internal scans to help ensure that no rogue or unmanaged devices are on the network, and that everything is up to date on patches. And no backup should be trusted until you confirm it can be restored. P Use two network interfaces in the server: one for admin and one for the network… Every one of those hacks started with compromised credentials which were simply username and password. We can restrict access and make sure the application is kept up-to-date with patches. If you use host intrusion prevention, you need to ensure that it is configured according to your standards, and reports up to the management console. Make 2016 the year you get your security house in order, and you will be well on your way to ensuring you won’t be front page news in 2017. Use TACACS+ or other remote management solution so that authorized users authenticate with unique credentials. It is up to you to then mould it to your environment . AAA, NTP, syslog, SNMP. Perform regular vulnerability scans of a random sample of your workstations to help ensure your workstations are up to date. Backup tapes contain all data, and the backup operators can bypass file level security in Windows so they can actually back up all data. If you aren’t, turn it off. Deny all should be the default posture on all access lists, inbound and outbound. It’s a bad idea to download files (mp3s, videos, games, etc) from websites that host torrents. Protect newly installed machines from hostile network traffic until the … SCP, where possible, Block insecure file transfer, e.g. Here’s a short list of the policies every company with more than two employees should have to help secure their network. So if you’re tasked with network security, either because you work on the IT security team, or perhaps you are the entire IT team by yourself, here is a simple list you can follow, broken down by category, which includes some tips and tricks for getting the job done. You’ll need to tweak this to suit your own environment, but rest assured the heavy lifting is done! Use a central form of time management within your organization for all systems including workstations, servers, and network gear. We’ll talk about some other things that can be stored on this server list down below, but don’t try to put too much onto this list; it’s most effective if it can be used without side to side scrolling. Protecting in layers means to protect at the host level, the application level, the operating system level, the user level, the physical level and all the sublevels in between. Thanks. Any additional documentation can be linked to or attached. Well, a lot can change in the four years since we published that list, and not everyone reads our back catalog, so we wanted to freshen things up and make sure we cover all the bases as we bring this checklist forward for you. Ports that are not assigned to specific devices should be disabled, or set to a default guest network that cannot access the internal network. Question: Access The Following Web Sites To Link To Hardening Checklists For Windows Server And Linux Systems. If you are a competent network administrator or an IT manager, backup / restore should be one of the top in your checklist. Do not permit connectivity from the guest network to the internal network, but allow for authorized users to use the guest network to connect to the Internet, and from there to VPN back into the internal network, if necessary. Application Hardening. Confirm what you are doing and be sure that you double-check when configuring new applications that may need a service. It enables enterprise policy enforcement of all users and hosts. Maintain a network hardware list that is similar to your server list, and includes device name and type, location, serial number, service tag, and responsible party. STAY AWAY FROM TORRENT-BASED WEBSITES. Some of the breakdowns may seem arbitrary, but you have to draw lines and break paragraphs at some point, and this is where we drew ours. Cloudera Security Hardening Checklist 0.2 (XLS) Lead Brett Weninger is the Team Leader for this checklist, if you have comments or questions, please e-mail Brett at: email@example.com If you can’t install and use an external AAA … Organizations and enterprises with more than 50 employees and a hundred computer units should have these two in place. Application hardening is the process of securing applications against local and Internet-based attacks. Especially when the torrent client is sharing files to others. syslog, Log all failed interactive device management access using centralized AAA or an alternative, e.g. In a nutshell, hardening your home wireless network is the first step in ensuring the safety of your family on potentially dangerous web. Don’t overlook the importance of making sure your workstations are as secure as possible. Neither are particularly effective against someone who is seriously interested in your wireless network, but it does keep you off the radar of the casual war driver. No matter what you use to administer and monitor your servers, make sure they all report in (or can be polled by) before putting a server into production. P Place the server in a physically secure location. Backup agents, logging agents, management agents; whatever software you use to manage your network, make sure all appropriate agents are installed before the server is considered complete. Thank you so much for sharing this wonderful knowledge! I am sending it to some pals ans also sharing in delicious. Let’s face it. ... Tableau Server was designed to operate inside a protected internal network. Get immediate results. Download GFI LanGuard free for 30 days today. If the wrong user simply reads a file, bad things could happen. To protect the network from intruders, organizations should deploy a business-grade firewall, customize its configuration, disable any and all unused services, including file and printer sharing and web and mail servers, block … Use filter lists that support your company’s acceptable use policy. I think two weeks is good, but most would say 30 days. Include all your network gear in your regular vulnerability scans to catch any holes that crop up over time. GFI Software has a patch management solution which is loved by many sysadmins. Kevin Fraseir February 29, 2012 at 6:33 am. That person is also the second pair of eyes, so you are much less likely to find that something got missed. I think this list can be used as a basis for security for companies of all sizes. Hardening Network Devices Use 802.1x for authentication to your wireless network so only approved devices can connect. Turn on your firewall. Only resort to local groups when there is no other choice, and avoid local accounts. All servers should be assigned static IP addresses, and that data needs to be maintained in your IP Address Management tool (even if that’s just an Excel spreadsheet.) FTP, TFTP, unless required, Device software image verification, e.g. Keep a list of all workstations, just like the server list, that includes who the workstation was issued to and when its lease is up or it’s reached the end of its depreciation schedule. Otherwise, you never know when you might accidentally click something that runs with those elevated privileges. If a server doesn’t need to run a particular service, disable it. In the next few lessons, we'll do a deep dive on the best practices that an IT support specialist should know for implementing network hardening. If it’s worth building, it’s worth backing up. Make sure every user gets a unique account that can be attributed only to them. The Information Security Office has distilled the CIS lists down to the most critical steps for your systems, with a particular focus on configuration issues that are unique to the computing environment at The University of Texas at Austin. Always assign permissions using the concept of “least privilege.” “Need access” should translate to “read only” and “full control” should only ever be granted to admins. Deploy an email filtering solution that can filter both inbound and outbound messages to protect your users and your customers. Someone other than the person who built the server should spot check it to be sure it’s good to go, before it’s signed into production. How to Comply with PCI Requirement 2.2. Windows Server Preparation. Users are the weakest link in any network security scenario. We are defining discrete prescriptive Windows 10 security configurations (levels 5 through 1) to meet many of the common device scenarios we see today in the enterprise. From these threats, the toughest for me are torrent-based infections and attacks. Hardening approach. Christina Goggi March 5, 2012 at 11:13 am. Rename the local administrator account, and make sure you set (and document) a strong password. The hardening checklists are based on the comprehensive checklists produced by CIS. To provide increased flexibility for the future, DISA has updated the systems that produce STIGs and SRGs. For a small company it can be used verbatim, while for a large one there might need to be some additions but all in all, awesome work, thank you! Administrators can use it as a reminder of all the hardening features used and considered for a Cisco IOS device, even if a feature was not implemented because it did not apply. For me, making sure workstations are in good shape (secured, updated and physically in excellent condition) should be the top-most concern rather than the server itself. Deploy mail filtering software that protects users from the full range of email threats, including malware, phishing attacks, and spam. Protection is provided in various layers and is often referred to as defense in depth. These files can be used to infect your computers and spread viruses. Block outbound traffic that could be used to go around the Internet monitoring solution so that if users are tempted to violate policy, they cannot. If you are going to do split tunneling, enforce internal name resolution only to further protect users when on insecure networks. Make sure to update this when people change roles. Make sure all servers are connected to a UPS, and if you don’t use a generator, make sure they have the agent needed to gracefully shut down before the batteries are depleted. A great list! The more ways to get into a workstation, the more ways an attacker can attempt to exploit the machine. But don’t just disable something because you don’t know what it does. Harden your Windows Server 2019 servers or server templates incrementally. What i really would like to see is a tool or an excel sheet as an example of documenting these information, because i keep strugling wich data is important and how to save them efficient. Keep the data current in your system. By “signing” it, that user is saying they confirmed the server meets your company’s security requirements and is ready for whatever the world can throw at it. Backups are worthless if they cannot be restored. Set appropriate memberships in either local administrators or power users for each workstation. for configuration changes and environmental monitor threshold exceptions, Commonly Used Protocols in the Infrastructure, Security Baseline Checklist�Infrastructure Device Access. Scanning exceptions need to be documented in the server list so that if an outbreak is suspected, those directories can be manually checked. In some cases it’s even more so, since your servers benefit from the physical security of your datacenter, while workstations are frequently laptops sitting on table tops in coffee shops while your users grab another latte. Don’t be a victim. Torrents are bad news for so many reasons.. besides the fact that a user in a corporate environment can infect the entire network just because they wanted to download a song or movie, they could leave the company legally liable for copyright infringement. Take the necessary steps to fix all issues. Network Hardening Defined Vulnerability can be found everywhere throughout your network and server, putting your precious data, business processes and brand reputation at risk. It’s very helpful when looking at logs if a workstation is named for the user who has it. Multifunction Device Hardening Checklist. This checklist can be used for all Windows installations. 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