If you can’t install and use an external AAA … It designed to enable secure user and host access to enterprise networks. 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. This security checklist is awesome. As an example, we all know that sharing passwords is bad, but until we can point to the company policy that says it is bad, we cannot hold our users to account should they share a password with another. You probably will assign IP addresses using DHCP, but you will want to make sure your scopes are correct, and use a GPO to assign any internal DNS zones that should be searched when resolving flat names. The default permissions are usually a little too permissive. If a server doesn’t need to run a particular service, disable it. All of these groups offer Configuration Hardening Checklists for most Windows Operating Systems, Linux variants (Debian, Ubuntu, CentOS, RedHat Enterprise Linux aka RHEL, SUSE Linux), Unix variants (such as Solaris, AIX and HPUX), and firewalls and network appliances, (such as … 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. Backup backup backup. If you must use a domain account to remote into a machine, use one that ONLY has permissions to workstations so that no attacker can run a Pass The Hash attack on you and use those creds to get onto servers. Quite an exhaustive list, but that’s the kind of thorough attention to detail that is necessary when reviewing network security. Assign static IP addresses to all management interfaces, add A records to DNS, and track everything in an IP Address Management (IPAM) solution. We specialize in computer/network security, digital forensics, application security and IT audit. Secure Sockets Layer (SSL/TLS) is essential for … GFI Software has a patch management solution which is loved by many sysadmins. Keep the data current in your system. NTP can keep all systems in sync, and will make correlating logs much easier since the timestamps will all agree. Network hardening is fundamental to IT security. read-only, Define strong, non-trivial community strings where SNMP required, Restrict SNMP views per community where possible, Enable only operationally important traps, Block queries that may impact device performance, Enforce strong encryption of locally stored information, Configure NTP across all devices (see NTP section for details), Log all successful interactive device management access using centralized AAA or an alternative, e.g. Great places to hide and launch an attack. You probably won’t perform regular full backups of your workstations, but consider folder redirection or Internet based backups to protect critical user data. An MFD is sometimes called a multifunction printer (MFP) or all-in-one (AIO) device, and typically incorporates printing, copying, scanning, and faxing capabilities. for configuration changes and environmental monitor threshold exceptions, Commonly Used Protocols in the Infrastructure, Security Baseline Checklist�Infrastructure Device Access. If their new role does not require access to resources that their old role gave them, remove that access. And naturally, thanks for your sweat! When a tape has reached its end of life, destroy it to ensure no data can be recovered from it. 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. Mistakes to avoid. Subtitle files are sometimes encoded with malicious codes. Given least privilege, it needs to be standard operating procedure to review and revise group memberships and other access privileges when a user changes jobs. 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. Computer security training, certification and free resources. Deny all should be the default posture on all access lists, inbound and outbound. In a business, one of the things to be considered should be the network security, the company or business should have networking technologies that can do that. Getting access to a hardening checklist or server hardening policy is easy enough. 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. Have another run at least once a month that identifies accounts that have been disabled for 90 days, and deletes them. 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. Naming conventions may seem like a strange thing to tie to security, but being able to quickly identify a server is critical when you spot some strange traffic, and if an incident is in progress, every second saved counts. Policies need to be created, socialized, approved by management, and made official to hold any weight in the environment, and should be used as the ultimate reference when making security decisions. Create a “Bring Your Own Device” policy now, even if that policy is just to prohibit users from bringing their personal laptops, tablets, etc. At a minimum it should include all the name, purpose, ip.addr, date of service, service tag (if physical,) rack location or default host, operating system, and responsible person. 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: brett.weninger@adurant.com P Use two network interfaces in the server: one for admin and one for the network… This goes more for the sysadmins reading this than end users, so do as we say and not as you do…make sure you log on with a regular account, and only authenticate with your privileged account when you need to do admin work. Much like servers, pick one remote access method and stick with it, banning all others. For a PDF version of The ultimate network security checklist click here. Even reputable courier services have lost tapes, so ensure that any tape transported offsite, whether through a service or by an employee, is encrypted to protect data against accidental loss. Make sure all your VM hosts, your Active Directory PDC emulator, all of your network gear, your SEM, your video camera system, and your other physical security systems are all configured to use this same time source so that you know correlation between events will be accurate. Make sure contact details, job titles, managers, etc. You should not do or apply only one. Remove the Everyone group from legacy shares, and the authenticated users group from newer shares, and set more restrictive permissions, even if that is only to “domain users.” This will save you a ton of time should you ever have to set up a share with another entity. 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. Take the necessary steps to fix all issues. Don’t just audit failures, or changes. Perform regular reviews of your remote access audit logs and spot check with users if you see any unusual patters, like logons in the middle of the night, or during the day when the user is already in the office. Thanks. Don’t be a victim. Make sure to disable any interfaces that aren’t being used so they don’t grab an ip.addr or register their APIPA address in DNS if they do get connected to a live Ethernet port by mistake. As an experienced senior network administrator for more than eight years, I’ve encountered some of the toughest network security risks there is. Only resort to local groups when there is no other choice, and avoid local accounts. This list can really help business owners prevent improve their network security. Protect newly installed machines from hostile network traffic until the … Rename the local administrator account and set a strong password on that account that is unique per machine. This Sharing Peripherals Across the Network (SPAN) Security Technical Implementation Guide (STIG) provides the technical security policies, requirements, and implementation details for applying security concepts to Commercial-Off-The-Shelf (COTS) hardware peripheral devices. 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. If you have a file system that tempts you to use “Deny Access” to fix a “problem” you are probably doing something wrong. into the office or connecting over the VPN. If you answered yes, you’re doing it wrong. Turn on your firewall. A security configuration checklist (also called a lockdown, hardening guide, or benchmark) is a series of instructions or procedures for configuring an IT product to a particular … That person is also the second pair of eyes, so you are much less likely to find that something got missed. If you have multiple environments it may be very tempting to share credential specifics between them. Roger Willson February 27, 2012 at 9:15 am. For most, that should be SSH version 2. 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. Network hardware runs an operating system too, we just call it firmware. This checklist can be used for all Windows installations. Windows Server Preparation. 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 … If you have bar code readers or other legacy devices that can only use WEP, set up a dedicated SSID for only those devices, and use a firewall so they can only connect to the central software over the required port, and nothing else on your internal network. While you don’t want servers to hibernate, consider spinning down disks during periods of low activity (like after hours) to save electricity. To provide increased flexibility for the future, DISA has updated the systems that produce STIGs and SRGs. Hardening refers to providing various means of protection in a computer system. Include all your network gear in your regular vulnerability scans to catch any holes that crop up over time. 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. The security configuration framework is designed to help simplify security configuration while still allowing enough flexibility to allow you to balance security, productivity, and user experience. The hardening checklists are based on the comprehensive checklists produced by CIS. But since … Ensure that only authorized users can access the workstation remotely, and that they must use their unique credential, instead of some common admin/password combination. Before a user ever gets a network account, they need training on what to do, what not to do, and how to go about protecting themselves and the network. Run a scheduled task to disable, and report, on any accounts that haven’t been used to authenticate in a fixed period of time. Scanning exceptions need to be documented in the server list so that if an outbreak is suspected, those directories can be manually checked. Create a server deployment checklist, and make sure all of the following are on the list, and that each server you deploy complies 100% before it goes into production. Multifunction Device Hardening Checklist. 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. Your network infrastructure is easy to overlook, but also critical to secure and maintain. Use filter lists that support your company’s acceptable use policy. Each server must have a responsible party; the person or team who knows what the server is for, and is responsible for ensuring it is kept up to date, and can investigate any anomalies associated with that server. 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. Remember, not every browser will honor GPO settings and not every app will process what’s in a PAC or WPAD. In addition to the items in the network equipment list above, you want to ensure the following for your wireless networking. P Place the server in a physically secure location. Implement one hardening aspect at a time and then test all server and application functionality. In recent versions of Windows operating systems, including Windows 10, your … Wonderful website. I also would like to add that vulnerability scan and patch management should go hand in hand. Please could you explain how this can be a threat? A great list indeed! Especially when the torrent client is sharing files to others. Everyone has their own method; the most common approach is probably keeping a cheat sheet (which is just a concise list of the items you think apply to you). Ensure that all network configurations are done properly, including static ip.addr assignments, DNS servers, WINS servers, whether or not to register a particular interface, binding order, and disabling services on DMZ, OOB management, or backup networks. According to the PCI DSS, to comply with Requirement 2.2, merchants must “address all known security vulnerabilities and [be] consistent with industry-accepted system hardening standards.” Common industry-accepted standards that include specific weakness-correcting guidelines are published by the following organizations: Cloudera Hadoop Status Updated: September 24, 2013 Versions. Configure your vulnerability scanning application to scan all of your external address space weekly. Chapter Title. This checklist contains multifunction device (MFD) hardening requirements. Validate that each workstation reports to your antivirus, patch management, and any other consoles before you turn it over to the user, and then audit frequently to ensure all workstations report in. 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. But don’t just disable something because you don’t know what it does. Use VLANs to segregate traffic types, like workstations, servers, out of band management, backups, etc. Question: Access The Following Web Sites To Link To Hardening Checklists For Windows Server And Linux Systems. If there’s one GREAT thing I learned way back in college – that is to backup all network programs and systems. Make sure you have a tape rotation established that tracks the location, purpose, and age of all tapes. I think two weeks is good, but most would say 30 days. Use a script to create random passwords, and store them securely where they can be retrieved in an emergency. Whether you use Bitlocker, third party software, or hardware encryption, make it mandatory that all drives are encrypted. Use your wireless network to establish a guest network for visiting customers, vendors, etc. Make sure they know the penalty for revealing their credentials to another is death by tickling. 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. Willie Sutton, a notorious American criminal, when asked why he robbed banks, answered “because that’s where the money is.” If you could ask a hacker why s/he breaks into servers they would probably reply with a similar answer “because that’s where the data is.” In today’s society, data is a fungible commodity that is easy to sell or trade, and your servers are where most of your company’s most valuable data resides. 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. How about VoIP phones, IP cams, mobile phones, etc? 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. Network hardening is the process of securing a network by reducing its potential vulnerabilities through configuration changes, and taking specific steps. 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. 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. Every server deployed needs to be fully patched as soon as the operating system is installed, and added to your patch management application immediately. And no backup should be trusted until you confirm it can be restored. 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. This can really help businesses for their network security. No shared accounts…ever! If you have more servers than you can count without taking off your shoes, you have too many to manually check each one’s logs by hand. Download GFI LanGuard free for 30 days today. Application hardening is the process of securing applications against local and Internet-based attacks. Checklist Summary: . Let’s face it. Kevin, I understood that a .srt file is just text. It enables enterprise policy enforcement of all users and hosts. Network Security Baseline. 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. System hardening is the practice of securing a computer system to reduce its attack surface by removing unnecessary services and unused software, closing open network ports, changing default settings, and so on. Pop quiz…is your username and password for Facebook the same as for Twitter? Thomas Macadams February 28, 2012 at 2:51 am. Any additional documentation can be linked to or attached. Keep up to date on patches and security updates for your hardware. Users are the weakest link in any network security scenario. Rename the local administrator account, and make sure you set (and document) a strong password. It’s not a foolproof approach, but nothing in security is. No production data should ever get onto a server until it is being backed up. Organize your workstations in Organizational Units and manage them with Group Policy as much as possible to ensure consistent management and configuration. syslog, Log all successful privileged EXEC level device management access using centralized AAA or an alternative, e.g. If it’s worth building, it’s worth backing up. Never repurpose tapes that were used to backup highly sensitive data for less secure purposes. Important: Do not run Tableau Server, or any components of Tableau Server on the internet or in a DMZ. SCP, where possible, Block insecure file transfer, e.g. Make sure to update this when people change roles. FTP, TFTP, unless required, Device software image verification, e.g. 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. P Do not install a printer. It’s no secret that attackers traditionally go after low-hanging fruit when hacking a system. Make any appropriate assignments using domain groups when possible, and set permissions using domain groups too. 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. Create separate local accounts for User Authentication. © 2020 Cisco and/or its affiliates. It is really a concise representation of all the points that need to be secured. The importance of hardening firmware security. Use only secure routing protocols that use authentication, and only accept updates from known peers on your borders. The most annoying of all these is that OPM was supposed to already be using 2FA, but wasn’t. ... Tableau Server was designed to operate inside a protected internal network. The built-in Remote Desktop service that comes with Windows is my preference, but if you prefer another, disable RDP. 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. This needs to be done first, and repeatedly, with at least an annual review and update. Chistian Oliver February 24, 2012 at 3:39 pm, Xerxes Cumming February 25, 2012 at 9:11 am. I’ve been a white hacker for several years now and these two network security methodologies are a must for both the server and the workstations. User Accounts. Backup tapes contain all data, and the backup operators can bypass file level security in Windows so they can actually back up all data. Ensure that your edge devices will reject directory harvest attempts. Configure SSL/TLS with a valid, trusted certificate. If you have used this form and would like a copy of the information held about you on this website, Unless there’s a really good reason not to, such as application issues or because it’s in the DMZ, all Windows servers should be domain joined, and all non-Windows servers should use LDAP to authenticate users against Active Directory. This is a document to provide you with the areas of information security you should focus on, along with specific settings or recommended practices that will help you to secure your environment against threats from within and without. 100% coverage of all workstations. Two factor authentication. Run a full vulnerability scan against each server before it goes into production to make sure nothing has been missed, and then ensure it is added to your regularly scheduled scans. Designing a network is not just about placing routers, firewalls, intrusion detection system, etc in a network but it is about having good reasons for placing such hardware in its place. Thanks Remco! Application Hardening. Hardening Network Devices Don’t forget those service tags! These files can be used to infect your computers and spread viruses. Download GFI LanGuard free for 30 days today! are all updated whenever there is a change so that if you do need to look something up on a user, you have what you need, and not their phone number from seven years ago when they were first hired. Network Access Control is the solution for providing access control to corporate networks. [ulp id=”cbiKoDdv59CzTKSA”] Submitted for your approval, the Ultimate Network Security Checklist-Redux version. Every one of those hacks started with compromised credentials which were simply username and password. Log all violations and investigate alerts promptly. It’s very helpful when looking at logs if a workstation is named for the user who has it. After Reviewing The Two Checklists, What Similarities Are There And What Differences Are There Between The Two Checklists? Here’s where most of the good stuff sits, so making sure your secure your fileshares is extremely important. One hole in any one of these spots can effectively bring most of the others down. Provide your users with secure Internet access by implement an Internet monitoring solution. All workstations should be domain joined so you can centrally administer them with unique credentials. And with Cloud Computing on the steady rise, automatic backups of your workstations and server will be both practical and easier to do. Harden your Windows Server 2019 servers or server templates incrementally. I am sending it to some pals ans also sharing in delicious. This has resulted in a … Software firewalls need to be configured to permit the required traffic for your network, including remote access, logging and monitoring, and other services. Here’s some tips for securing those servers against all enemies, both foreign and domestic. Use the most secure remote access method your platform offers. 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. But since they are also the reason we have IT and more to the point…a job…we need to make sure we take care of them and they take care of us. If you are going to do split tunneling, enforce internal name resolution only to further protect users when on insecure networks. A great resource for policy starter files and templates is the SANS Institute at http://www.sans.org. Hi can someone provide the checklist for windows server 2012 and windows 8,10 . That makes it much easier to track down when something looks strange in the logs. The database server is located behind a firewall with default rules to … Here’s how to handle workstation antivirus. Validate any differences from one week to the next against your change control procedures to make sure no one has enabled an unapproved service or connected a rogue host. Disable telnet and SSH 1, and make sure you set strong passwords on both the remote and local (serial or console) connections. 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. Get immediate results. It’s a text file, it could contain code that executes when it is open. Never let this be one of the things you forget to get back to. Whichever one you choose, choose one and make it the standard. Application hardening can be implemented by removing the functions or components that you don’t require. Identify where you’re vulnerable with your first scan on your first day of a 30-day trial. It’s a bad idea to download files (mp3s, videos, games, etc) from websites that host torrents. 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. syslog, Log all failed interactive device management access using centralized AAA or an alternative, e.g. 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. Create as many OUs as you need to accommodate the different servers, and set as much as possible using a GPO instead of the local security policy. Organizations and enterprises with more than 50 employees and a hundred computer units should have these two in place. 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