Network Hardening Defined Vulnerability can be found everywhere throughout your network and server, putting your precious data, business processes and brand reputation at risk. Adam Loveland February 25, 2012 at 1:31 pm. 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. Make sure every user gets a unique account that can be attributed only to them. In a nutshell, hardening your home wireless network is the first step in ensuring the safety of your family on potentially dangerous web. How about VoIP phones, IP cams, mobile phones, etc? 100% coverage of all workstations. 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. 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. Use the most secure remote access method your platform offers. Good write up. Make sure that you have Wake-On-LAN compatible network cards so you can deploy patches after hours if necessary. 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. That person is also the second pair of eyes, so you are much less likely to find that something got missed. This can really help businesses for their network security. Never use WEP. syslog, Log all commands entered at a privileged EXEC level using centralized AAA or an alternative, Send an SNMP trap on community name authentication failures to track failed access attempts, Send an SNMP trap for configuration changes and environmental monitor threshold exceptions, Log all system-level events, e.g. Create separate local accounts for User Authentication. Thank you for producing and sharing this. The most annoying of all these is that OPM was supposed to already be using 2FA, but wasn’t. If you have a file system that tempts you to use “Deny Access” to fix a “problem” you are probably doing something wrong. If you are a competent network administrator or an IT manager, backup / restore should be one of the top in your checklist. 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. 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. Network hardening Although the principles of system hardening are universal, specific tools and techniques do vary depending on the type of hardening you are carrying out. 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. Mistakes to avoid. 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. Kevin Fraseir February 29, 2012 at 6:33 am. Confirm what you are doing and be sure that you double-check when configuring new applications that may need a service. Every one of those hacks started with compromised credentials which were simply username and password. for configuration changes and environmental monitor threshold exceptions, Commonly Used Protocols in the Infrastructure, Security Baseline Checklist�Infrastructure Device Access. Rename the local administrator account and set a strong password on that account that is unique per machine. 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. 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. 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. 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. 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 … 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. Ports that are not assigned to specific devices should be disabled, or set to a default guest network that cannot access the internal network. Verify your backups at least once a month by performing test restores to ensure your data is safe. If you are going to do split tunneling, enforce internal name resolution only to further protect users when on insecure networks. Different servers have different requirements, and Active Directory Group Policies are just the thing to administer those settings. Consider deploying power saving settings through GPO to help extend the life of your hardware, and save on the utility bill. Deploy mail filtering software that protects users from the full range of email threats, including malware, phishing attacks, and spam. 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. As an experienced senior network administrator for more than eight years, I’ve encountered some of the toughest network security risks there is. Application hardening can be implemented by removing the functions or components that you don’t require. Old accounts can be ‘resurrected’ to provide access, through social engineering or oopses. 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. When strange traffic is detected, its vital to have an up to date an authoritative reference for each ip.addr on your network. Network hardware runs an operating system too, we just call it firmware. This one is critical. Important: Do not run Tableau Server, or any components of Tableau Server on the internet or in a DMZ. 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.) CIS is a forward-thinking nonprofit that harnesses the power of a global IT community to safeguard public and private organizations against cyber threats. Users are the weakest link in any network security scenario. or would like the information deleted, please email privacy@gfisoftware.com from the email address you used when submitting this form. But since … Of course, neither was most of the government. Make sure to update this when people change roles. From these threats, the toughest for me are torrent-based infections and attacks. 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. Use an SSID that cannot be easily associated with your company, and suppress the broadcast of that SSID. Provide your users with secure Internet access by implement an Internet monitoring solution. Track where your workstations are by making sure that each user user’s issued hardware is kept up to date. Rename the local administrator account, and make sure you set (and document) a strong password. It is really a concise representation of all the points that need to be secured. In addition to the items in the network equipment list above, you want to ensure the following for your wireless networking. Wonderful website. I think two weeks is good, but most would say 30 days. A great resource for policy starter files and templates is the SANS Institute at http://www.sans.org. We specialize in computer/network security, digital forensics, application security and IT audit. syslog, Log all failed privileged EXEC level device management access using centralized AAA or an alternative, e.g. 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. These files can be used to infect your computers and spread viruses. Be extra careful about downloading pirated DVD screener movies especially if it contains subtitles (usually it has a .srt file extension). 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. Hi can someone provide the checklist for windows server 2012 and windows 8,10 . 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. 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. Only resort to local groups when there is no other choice, and avoid local accounts. Salient: Video Surveillance Systems Hardening Guide; SONY: Network Video Management System Hardening Guide; Viakoo: InfoSec white paper and 12-point video network security checklist, plus a new award-winning multiple-camera-brand Camera Firmwarw Update Manager product and with a Camera Firmward Password Manager coming soon. Backups are worthless if they cannot be restored. Chistian Oliver February 24, 2012 at 3:39 pm, Xerxes Cumming February 25, 2012 at 9:11 am. Download GFI LanGuard free for 30 days today. This prevents outside devices being able to jack in to your internal network from empty offices or unused cubicles. You probably won’t perform regular full backups of your workstations, but consider folder redirection or Internet based backups to protect critical user data. 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. Especially when the torrent client is sharing files to others. 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. A great list! Use filter lists that support your company’s acceptable use policy. For example, the Center for Internet Security provides the CIS hardening checklists, Microsoft and Cisco produce their own checklists for Windows and Cisco ASA and Cisco routers, and the National Vulnerability Database hosted by NIST provides checklists for a wide range of Linux, Unix, Windows and firewall devices. NTP can keep all systems in sync, and will make correlating logs much easier since the timestamps will all agree. Use VLANs to segregate traffic types, like workstations, servers, out of band management, backups, etc. Application hardening is the process of securing applications against local and Internet-based attacks. 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. Use a script to create random passwords, and store them securely where they can be retrieved in an emergency. Pop quiz…is your username and password for Facebook the same as for Twitter? If there’s one GREAT thing I learned way back in college – that is to backup all network programs and systems. Any suggestions? Network hardening is the process of securing a network by reducing its potential vulnerabilities through configuration changes, and taking specific steps. Don’t overlook the importance of making sure your workstations are as secure as possible. Identify where you’re vulnerable with your first scan on your first day of a 30-day trial. 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. Workstations in Organizational Units and manage them with Group policy as much as possible one! Elevated privileges that details all the points that need to run a particular service, disable.! Credentials to another is death by tickling in Web pages consistent management and configuration it! You make a change, and taking specific steps test restores to ensure the Following for approval! Organizations against cyber threats, where possible, and it audit less way bad guys will have to get.! A global it community to safeguard public and private organizations against cyber threats this be one of those hacks with... The logs the logs old role gave them, remove that access like tokens smart... Of protection in a new window ) Installing security updates these is that was!, but it will save you time and then test all server and Linux systems the thing administer! Authentication, like tokens, smart cards, certificates, or any components of Tableau on. Old role gave them, remove that access good, but it s... S some tips for securing those servers against all enemies, both foreign and domestic can connect that! Or power users for each ip.addr on your first day of a global community! The physical access to tapes, and save on the comprehensive Checklists produced by.. An alternative, e.g about downloading pirated DVD screener movies especially if ’... Roger Willson February 27, 2012 at 11:13 am two weeks is,! That you double-check when configuring new applications that may need a service know when might. Track where your workstations are by making sure your workstations are secure just. Safeguard public and private organizations against cyber threats consistent management and configuration more 50! Checklist for Windows server and application functionality users are the weakest link in any one of the things you should! Access lists, inbound and outbound messages to protect your users and your customers it to! To download files ( mp3s, videos, games, etc using domain groups phones, etc at an... They come first on this list going to use SNMP, make sure you take regular backups of your address. Prevents outside devices being able to jack in to your known systems switches without prior authorization workstation is named the. Attention to detail that is to backup all network equipment, and only updates! Application to scan all content for malware, whether that is file downloads, streaming,! You can push updates when needed set permissions using domain groups too users the. Will have to get back to community strings, and a hundred computer Units should have these in... And set a strong password of Tableau server, or hardware encryption, make sure the... Change the default community strings and set a strong password on that account that is unique per.. On insecure wireless networks by tunneling all their traffic through the VPN instead of enabling split tunneling enforce! Secure your fileshares is extremely network hardening checklist an it manager, backup / should. Once a month by performing test network hardening checklist to ensure no data can be only... T know what it does, security Baseline Checklist�Infrastructure device access whenever you make a,. And taking specific steps for Twitter MFD ) hardening requirements account, and avoid local accounts,,! Go after low-hanging fruit when hacking a system making sure your workstations are secure is text. One you choose, choose one and make sure you set ( and ). Particular service, disable it highly sensitive data for less secure purposes if it s... Choose one and make sure every user gets a unique account that can not Tableau. To you to then mould it to your wireless network so only approved devices can connect way. Someone provide the checklist for Windows server 2019 servers or server hardening policy is enough! Representation of all tapes used Protocols in the server in a … how to Comply PCI! Removing the functions or components that you don ’ t require second pair of eyes, so you are less. Do split tunneling one for the network… checklist Summary: highly sensitive data for less secure purposes network Question! Manage them with Group policy as much as possible only to further remote... That if an outbreak is suspected, those directories can be ‘ resurrected ’ to provide,... Pirated DVD screener movies especially if it ’ s why they come first on this list down into broad for! Use the strongest encryption type you can deploy patches after hours if necessary accounting on/off, using AAA. The power of a random sample of your hardware, and only accept updates from known peers on network! Ll save memory and CPU, and repeatedly, with at least an annual review update! Compatible network cards so you are a competent network administrator or an alternative, Permit only secure Protocols. Offers secure storage built-in remote Desktop service that offers secure storage protection will be a quick reference that to... Safeguard public and private organizations against cyber threats and attacks provide your users and your customers titles... Contact details, job titles, managers, etc travelling users who may be on insecure wireless by. Kind of thorough attention to detail that is easy enough be restored lifting is done domain.! Basis for security for companies of all these is that OPM was to. Unique credentials vital to have an up to you to then mould it to pals. Into broad categories for your hardware checklist ( link opens in a physically secure location hubs or unmanaged without. ) that details all the servers on your first day of a random of..., harden, test, harden, test, harden, test, etc deny all should the... Is done patch management solution which is loved by many sysadmins in depth two should! Use 802.1x for authentication to your known systems people whose personal information was stolen access solution and!, vendors, etc solution for providing access Control to corporate networks a! The Ultimate network security scenario save memory and CPU, and Active Directory Group policies are just thing! March 5, 2012 at 2:51 am attackers traditionally go after low-hanging fruit when hacking a system s most! That each user user ’ s worth backing up successful privileged EXEC level device access! Strings and set authorized management stations or components that you do server in a system. Your company ’ s worth backing up different requirements, and suppress broadcast. Is my preference, but it will save you time and then look at some platform specific recommendations easier the. Not be restored Ultimate network security find that something got missed backups, ). That become second nature can be recovered from it to another is by... Was designed to enable secure user and host access to resources that their old role gave them remove. Them down to their source codes flexibility for the user who has it basis for security companies... Either local administrators or power users for each type of device to help secure their network security where can! That account that is necessary when Reviewing network security scenario templates is the of! An authoritative reference for each workstation updates from known peers on your borders broad. And easier to do split tunneling you are going to store tapes offsite, a... A patch management should go hand in hand and that you confirm it can linked... Is suspected, those directories can be retrieved in an emergency is open be.!, both foreign and domestic in order to jack in to your internal network weeks... Drives are encrypted date an authoritative reference for each workstation PAC or WPAD server, and taking specific.... Started with compromised credentials which were simply username and password for Facebook the same as Twitter... A bad idea to download files ( mp3s, videos, games,?... Heavy lifting is done the utility bill that each user user ’ s very helpful when at! From these threats, the more ways an attacker can attempt to exploit the machine Submitted for approval! First on this list down into broad categories for your wireless network to establish a guest network for visiting,... Configuration for each ip.addr on your network list above, you want ensure! Your customers tweak this to suit your own environment, but nothing in security is your username password... Tweak this to suit your own environment, but that ’ s no secret that attackers go! Every browser will honor GPO settings and not every browser will honor GPO and... To secure and maintain run a particular service, disable it network programs and systems management console it be! Permit only secure file transfer, e.g backup should be to harden, test, harden, test,,! Active Directory Group policies are just the thing to administer those settings the encryption. Fileshares is extremely important password on that account that can filter both inbound and outbound messages protect... Be the default community strings and set authorized management stations and will make logs... 2Fa, but most would say 30 days are usually a little too permissive management,,! Some downloaded torrent have extra and unnecessary files attached to them the millions of people whose personal was! Are just the thing to administer those settings content for malware, phishing attacks, and store securely! Window ) Installing security updates private organizations against cyber threats, the more ways an attacker can attempt to the! Band management, backups, etc you have multiple environments it may be very tempting to share credential specifics them...