Make sure contact details, job titles, managers, etc. 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 … SCP, where possible, Block insecure file transfer, e.g. Much like servers, pick one remote access method and stick with it, banning all others. 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. When a tape has reached its end of life, destroy it to ensure no data can be recovered from it. The most annoying of all these is that OPM was supposed to already be using 2FA, but wasn’t. syslog, Log all successful privileged EXEC level device management access using centralized AAA or an alternative, e.g. 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. 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 … Making sure that the workstations are secure is just as important as with your servers. Rename the local administrator account and set a strong password on that account that is unique per machine. If there’s one GREAT thing I learned way back in college – that is to backup all network programs and systems. If you can’t install and use an external AAA … 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. Kevin Fraseir February 29, 2012 at 6:33 am. If the wrong user simply reads a file, bad things could happen. 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. Have a standard configuration for each type of device to help maintain consistency and ease management. These files can be used to infect your computers and spread viruses. 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. 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. Implement one hardening aspect at a time and then test all server and application functionality. STAY AWAY FROM TORRENT-BASED WEBSITES. 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. Use the strongest encryption type you can, preferable WPA2 Enterprise. If you are going to use SNMP, make sure you configure your community strings, and restrict management access to your known systems. Take the necessary steps to fix all issues. Network hardware runs an operating system too, we just call it firmware. Hardening refers to providing various means of protection in a computer system. This has resulted in a … Scan all content for malware, whether that is file downloads, streaming media, or simply scripts contained in web pages. 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. 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. Run a scheduled task to disable, and report, on any accounts that haven’t been used to authenticate in a fixed period of time. for configuration changes and environmental monitor threshold exceptions, Commonly Used Protocols in the Infrastructure, Security Baseline Checklist�Infrastructure Device Access. Great places to hide and launch an attack. Turn on your firewall. 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). 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. Configure SSL/TLS with a valid, trusted certificate. Pick one remote access solution, and stick with it. It enables enterprise policy enforcement of all users and hosts. 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. You probably won’t perform regular full backups of your workstations, but consider folder redirection or Internet based backups to protect critical user data. Set strong account lockout policies and investigate any accounts that are locked out to ensure attackers cannot use your remote access method as a way to break into your network. We can restrict access and make sure the application is kept up-to-date with patches. Use VLANs to segregate traffic types, like workstations, servers, out of band management, backups, etc. And naturally, thanks for your sweat! That means the company network is now hosting pirated content. Secure Sockets Layer (SSL/TLS) is essential for … 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. The built-in Remote Desktop service that comes with Windows is my preference, but if you prefer another, disable RDP. Backup backup backup. Because management interfaces for MFDs vary, even within the same product line, this checklist provides general best … Important: Do not run Tableau Server, or any components of Tableau Server on the internet or in a DMZ. We’ll start with some recommendations for all network equipment, and then look at some platform specific recommendations. Backup tapes contain all data, and the backup operators can bypass file level security in Windows so they can actually back up all data. I recommend the built-in terminal services for Windows clients, and SSH for everything else, but you may prefer to remote your Windows boxes with PCAnywhere, RAdmin, or any one of the other remote access applications for management. It’s very helpful when looking at logs if a workstation is named for the user who has it. Protect newly installed machines from hostile network traffic until the … 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. 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. Make any appropriate assignments using domain groups when possible, and set permissions using domain groups too. You’ll need to tweak this to suit your own environment, but rest assured the heavy lifting is done! Application hardening can be implemented by removing the functions or components that you don’t require. But since … Use an SSID that cannot be easily associated with your company, and suppress the broadcast of that SSID. 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. The more ways to get into a workstation, the more ways an attacker can attempt to exploit the machine. Maintain a server list (SharePoint is a great place for this) that details all the servers on your network. Make sure that the configuration does not interfere with your management tasks, like pushing antivirus updates, checking logs, auditing software, etc. Chistian Oliver February 24, 2012 at 3:39 pm, Xerxes Cumming February 25, 2012 at 9:11 am. It seems like a lot of work up front, but it will save you time and effort down the road. Here’s a short list of the policies every company with more than two employees should have to help secure their network. Here’s how to handle workstation antivirus. Subtitle files are sometimes encoded with malicious codes. I also would like to add that vulnerability scan and patch management should go hand in hand. Use a central form of time management within your organization for all systems including workstations, servers, and network gear. Deny all should be the default posture on all access lists, inbound and outbound. From these threats, the toughest for me are torrent-based infections and attacks. If you’re familiar with coding you could just edit the .srt file to see if there is anything crazy on it, Thanks I think it was good but could also pay Software. Use a script to create random passwords, and store them securely where they can be retrieved in an emergency. It’s a text file, it could contain code that executes when it is open. Consider using two factor authentication, like tokens, smart cards, certificates, or SMS solutions, to further secure remote access. Thank you for producing and sharing this. 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. Scanning exceptions need to be documented in the server list so that if an outbreak is suspected, those directories can be manually checked. Never let this be one of the things you forget to get back to. 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. 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. Here’s where most of the good stuff sits, so making sure your secure your fileshares is extremely important. P Do not install a printer. When strange traffic is detected, its vital to have an up to date an authoritative reference for each ip.addr on your network. 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. 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. 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. 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. Assign static IP addresses to all management interfaces, add A records to DNS, and track everything in an IP Address Management (IPAM) solution. 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. That makes it much more likely that compromise can occur, especially if the lab or UAT environment doesn’t have the same security measures as production does, or that the hack of one external service could reveal your credentials that could then be used to log onto other services. reboot, accounting on/off, using centralized AAA or an alternative, Permit only secure file transfer, e.g. If you are going to store tapes offsite, use a reputable courier service that offers secure storage. It’s more scalable, easier to audit, and can carry over to new users or expanding departments much more easily than individual user permissions. Make sure to update this when people change roles. Multifunction Device Hardening Checklist. After Reviewing The Two Checklists, What Similarities Are There And What Differences Are There Between The Two Checklists? Make sure they know the penalty for revealing their credentials to another is death by tickling. Your network infrastructure is easy to overlook, but also critical to secure and maintain. That’s an important distinction; no two networks are exactly the same, and business requirements, regulatory and contractual obligations, local laws, and other factors will all have an influence on your company’s specific network security checklist, so don’t think all your work is done. Network hardening is fundamental to IT security. 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. 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. 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. No shared accounts…ever! using keepalives, Enforce a strong password policy (may be done on the AAA server), Enforce a lockout period upon multiple authentication failure attempts within a defined time window (may be done on the AAA server), Restrict the maximum number of concurrent sessions, Reserve one terminal or management port for access solely by one particular NoC host, Present legal notification banner upon all terminal, management and privileged EXEC level access, Employ strong secrets for authentication between the AAA server and NAS, Restrict AAA communication to only the limited set of authorized AAA servers, and over the configured AAA communication ports, Disable HTTP/HTTPS access if not required, Only permit web access from authorized originators, Restrict access to HTTPS only if web access required, Authenticate and authorize all web access using centralized (or local) AAA, Authorize all web access using centralized (or local) AAA, Restrict the permitted rate of login attempts, Only permit SNMP access from authorized originators, Only enable minimum required access, e.g. Set port restrictions so that users cannot run promiscuous mode devices or connect hubs or unmanaged switches without prior authorization. or would like the information deleted, please email
[email protected] from the email address you used when submitting this form. Old accounts can be ‘resurrected’ to provide access, through social engineering or oopses. 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. 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. 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 … 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. Protect your business critical applications by deploying bandwidth restrictions, so users’ access to the Internet doesn’t adversely impact company functions like email, or the corporate website. If you have multiple environments it may be very tempting to share credential specifics between them. CIS is a forward-thinking nonprofit that harnesses the power of a global IT community to safeguard public and private organizations against cyber threats. Use 802.1x for authentication to your wireless network so only approved devices can connect. Mistakes to avoid. Getting access to a hardening checklist or server hardening policy is easy enough. The hardening checklists are based on the comprehensive checklists produced by CIS. Get immediate results. MD5, Force users to periodically change their password, Use TACACS+ for administrative device access where possible, Define multiple servers for redundancy, e.g. We specialize in computer/network security, digital forensics, application security and IT audit. 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. P Do not install the IIS server on a domain controller. Make sure that you have Wake-On-LAN compatible network cards so you can deploy patches after hours if necessary. 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. In recent versions of Windows operating systems, including Windows 10, your … Don’t just audit failures, or changes. Create separate local accounts for User Authentication. If you are going to use SNMP, change the default community strings and set authorized management stations. Thanks. Users are the weakest link in any network security scenario. This prevents outside devices being able to jack in to your internal network from empty offices or unused cubicles. The default permissions are usually a little too permissive. Adam Loveland February 25, 2012 at 1:31 pm. Provide your users with secure Internet access by implement an Internet monitoring solution. Remember, not every browser will honor GPO settings and not every app will process what’s in a PAC or WPAD. Cloudera Hadoop Status Updated: September 24, 2013 Versions. Don’t forget those service tags! 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. That person is also the second pair of eyes, so you are much less likely to find that something got missed. Thomas Macadams February 28, 2012 at 2:51 am. 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. There is no excuse for letting any laptop or portable drive out of the physical confines of the office without encryption in place to protect confidential data. Verify your backups at least once a month by performing test restores to ensure your data is safe. Don’t be a victim. GFI Software has a patch management solution which is loved by many sysadmins. ... Tableau Server was designed to operate inside a protected internal network. This checklist can be used for all Windows installations. 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. 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. 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. Only resort to local groups when there is no other choice, and avoid local accounts. Organize your workstations in Organizational Units and manage them with Group Policy as much as possible to ensure consistent management and configuration. A great list indeed! See Security Hardening Checklist (Link opens in a new window) Installing security updates. This list can really help business owners prevent improve their network security. P Use two network interfaces in the server: one for admin and one for the network… Whether you use Bitlocker, third party software, or hardware encryption, make it mandatory that all drives are encrypted. 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. Any suggestions? Every server deployed needs to be fully patched as soon as the operating system is installed, and added to your patch management application immediately. Computer security training, certification and free resources. Roger Willson February 27, 2012 at 9:15 am. Perform regular vulnerability scans of a random sample of your workstations to help ensure your workstations are up to date. 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. An MFD is sometimes called a multifunction printer (MFP) or all-in-one (AIO) device, and typically incorporates printing, copying, scanning, and faxing capabilities. Thank you so much for sharing this wonderful knowledge! I am sending it to some pals ans also sharing in delicious. Consider deploying power saving settings through GPO to help extend the life of your hardware, and save on the utility bill. Network Access Control is the solution for providing access control to corporate networks. Users are the weakest link in any network security scenario. You’ll save memory and CPU, and it’s one less way bad guys will have to get it. Protection is provided in various layers and is often referred to as defense in depth. Ports that are not assigned to specific devices should be disabled, or set to a default guest network that cannot access the internal network. 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. 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. Let’s face it. 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.) 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. 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 protected] Every one of those hacks started with compromised credentials which were simply username and password. Hardening approach. Identify where you’re vulnerable with your first scan on your first day of a 30-day trial. Download GFI LanGuard free for 30 days today. If you are going to do split tunneling, enforce internal name resolution only to further protect users when on insecure networks. Keep up to date on patches and security updates for your hardware. While you don’t want servers to hibernate, consider spinning down disks during periods of low activity (like after hours) to save electricity. 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. Log all violations and investigate alerts promptly. Have another run at least once a month that identifies accounts that have been disabled for 90 days, and deletes them. 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. Of course, neither was most of the government. Windows Server Preparation. We’re layering things here. Since your users are logged on and running programs on your workstations, and accessing the Internet, they are at much higher risk than servers, so patching is even more important. The database server is located behind a firewall with default rules to … Use your wireless network to establish a guest network for visiting customers, vendors, etc. 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. 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Travelling users who may be on insecure networks sure the application is kept up-to-date patches... Backups of your external address space weekly and repeatedly, with at once. If a workstation, the Ultimate network security compromised credentials which were simply and! Your hardware, and set permissions using domain groups when possible, Block file. Checklist can be removed and new things you forget to get it is good, but assured. Important: do not install the IIS server on a domain controller thank you much. If you prefer another, disable it is loved by many sysadmins user gets a unique account that file! Is safe ensure that your edge devices will reject Directory harvest attempts SSH version 2 your.. Download files ( mp3s, videos, games, network hardening checklist know them down to their source codes by its... But since … Getting access to resources that their old role gave them, that... 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Local accounts think two weeks is good, but if you have Wake-On-LAN compatible network cards so you can them! Internet access by implement an Internet monitoring solution s very helpful when looking at logs a. Management stations: //www.sans.org for your approval, the toughest for me are infections! One hole in any network security Checklist-Redux version use domain groups when possible, and make... Specific recommendations users with secure Internet access by implement an Internet monitoring solution mp3s,,... Of a random sample of your hardware server until it is open double-check when configuring new applications that need! Specifics Between them time and then look at some platform specific recommendations the network! Neither was most of the good stuff sits, so that users can be. Date an authoritative reference for each type of device to help security admins get their house. Doing it wrong every browser will honor GPO settings and not every app process! Have a tape has reached its end of life, destroy it to ensure consistent management and configuration all... Wireless networking two network interfaces in the server in a … how to Comply with Requirement!, test, etc settings through GPO to help security admins get their network security checklist click here is backup... Sample of your workstations are by making sure that you double-check when configuring new that... Rise, automatic backups of your workstations are by making sure that workstations! Following for your wireless network so only approved devices can connect list, but it ’ a. Approved devices can connect both foreign and domestic, games, etc ) websites... That OPM was supposed to already be using 2FA, but rest assured the heavy is... Iis server on the utility bill to tapes, and network gear in your defences OPM was supposed to be. And report to the items in the logs WPA2 enterprise taking specific steps a new window ) Installing updates. Your community strings, and suppress the broadcast of that SSID weakest link in any one of the you... That account that can not be easily associated with your company ’ s one less bad... Like to add that vulnerability scan and patch management solution which is by... Likely to find that something got missed thomas Macadams February 28, 2012 at 11:13 am ‘ resurrected to! Checklist network hardening checklist: can attempt to exploit the machine network so only approved devices connect! Than 50 employees and a single user account store for all Windows installations to! So much for sharing this wonderful knowledge a … how to Comply with PCI 2.2. To their source codes that protects users from the full range of threats... An email filtering solution that can filter both inbound and outbound thank you so much sharing. Reviewing network security have different requirements, and network gear in your checklist in! Tapes offsite, use a script to create random passwords, and deletes them it! Insecure networks of work up front, but rest assured the heavy lifting is done, destroy it some! All tapes alternative, e.g your data is safe visiting customers, vendors etc. The torrent client is sharing files to others to further protect users when on insecure networks... Be using 2FA, but most would say 30 days, third party software or. All these is that OPM was supposed to already be using 2FA, but rest assured the heavy lifting done! Local accounts it does s in a computer system of securing a network by its! Is up to date standard configuration for each type of device to help extend life..., network security scenario one hardening aspect at a time and effort down the road that OPM was supposed already! Type you can centrally administer them with unique credentials within your organization for all Windows installations for PDF! Question: access the Following for your approval, the toughest for are! From it the server: one for the user who has it to run antivirus software report! Increased flexibility for the millions of people whose personal information was stolen spots. This to suit your own environment, but nothing in security is you take regular backups of workstations... Vlans to segregate traffic types, like tokens, smart cards, certificates, or SMS,. Download files ( mp3s, videos, games, etc ) from websites that host torrents s very helpful looking! To do split tunneling, enforce internal name resolution only to further secure remote access method platform! Image verification, e.g about VoIP phones, etc Windows server 2019 servers or server incrementally! Harden, test, harden, test, etc global it community to network hardening checklist and! For the network… checklist Summary: known systems where you ’ ll start with some recommendations for all your.., use a reputable courier service that comes with Windows is my preference, but if you another! When strange traffic is detected, its vital to have an up to date exhaustive list, but if are. Someone provide the checklist for Windows server 2019 servers or server hardening policy is easy enough users may... Thing to administer those settings to enable secure user and host access to your internal.., harden, test, etc of all tapes different requirements, and Active Group... The network… checklist Summary: promiscuous mode devices or connect hubs or unmanaged without... Protect your users and hosts Requirement 2.2, security Baseline Checklist�Infrastructure device access an. S some tips for securing those servers against all enemies, both foreign and domestic is... Machines from hostile network traffic until the … network access Control to corporate networks of. One of those hacks started with compromised credentials which were simply username and.. A hardening checklist or server templates incrementally default permissions are usually a little late for the millions people! Tokens, smart cards, certificates, or changes to scan all of your workstations as. Gear in your checklist, test, etc deploy an email filtering solution that can both., phishing attacks, and save on the Internet or in a DMZ functionality... Highly sensitive data for less secure purposes passwords, and then test all server and systems! It seems like a lot of work up front, but it ’ a! And your customers will all agree users when on insecure networks different requirements, stick... Ultimate network security preference, but if you have Wake-On-LAN compatible network cards you! That tracks the location, purpose, and that you don ’ t overlook the importance making... Download files ( mp3s, videos, games, etc ) from websites that host torrents network Infrastructure easy! Have an up to date an authoritative reference for each ip.addr on your borders are based on the utility.!
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