Download GFI LanGuard free for 30 days today! Kevin, I understood that a .srt file is just text. If the wrong user simply reads a file, bad things could happen. If you are going to use SNMP, make sure you configure your community strings, and restrict management access to your known systems. Never repurpose tapes that were used to backup highly sensitive data for less secure purposes. 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. Have another run at least once a month that identifies accounts that have been disabled for 90 days, and deletes them. 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 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. 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. 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. reboot, accounting on/off, using centralized AAA or an alternative, Permit only secure file transfer, e.g. 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. Here’s where most of the good stuff sits, so making sure your secure your fileshares is extremely important. Back in February 2012, we published a checklist to help security admins get their network house in order. Secure Sockets Layer (SSL/TLS) is essential for … 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. Organizations and enterprises with more than 50 employees and a hundred computer units should have these two in place. Then update it gradually – things that become second nature can be removed and new things you encounter should get added. P Use two network interfaces in the server: one for admin and one for the network… 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. Provide your users with secure Internet access by implement an Internet monitoring solution. 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. 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. No shared accounts…ever! This checklist is a collection of all the hardening steps that are presented in this guide. 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. Kevin Fraseir February 29, 2012 at 6:33 am. Never use WEP. It’s very helpful when looking at logs if a workstation is named for the user who has it. For Each Of The Items You Cite, Please Provide A Brief Explanation Of Its Purpose And The Threat It Attempts To Block Or Contain. 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. 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. 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. Use an SSID that cannot be easily associated with your company, and suppress the broadcast of that SSID. Configure SSL/TLS with a valid, trusted certificate. I think this list can be used as a basis for security for companies of all sizes. Network hardening is the process of securing a network by reducing its potential vulnerabilities through configuration changes, and taking specific steps. Rename the local administrator account and set a strong password on that account that is unique per machine. Rename the local administrator account, and make sure you set (and document) a strong password. From these threats, the toughest for me are torrent-based infections and attacks. 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. If there’s one GREAT thing I learned way back in college – that is to backup all network programs and systems. Don’t be a victim. The most annoying of all these is that OPM was supposed to already be using 2FA, but wasn’t. Use the strongest encryption type you can, preferable WPA2 Enterprise. 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. It is up to you to then mould it to your environment . It is really a concise representation of all the points that need to be secured. Perform regular vulnerability scans of a random sample of your workstations to help ensure your workstations are up to date. Take the necessary steps to fix all issues. Don’t just audit failures, or changes. Implement one hardening aspect at a time and then test all server and application functionality. 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 … P Do not install the IIS server on a domain controller. Wonderful website. Your network infrastructure is easy to overlook, but also critical to secure and maintain. Only resort to local groups when there is no other choice, and avoid local accounts. You may not need this much consideration for a smaller business, but if you have an intention to grow it is ALWAYS a better idea to have the infrastructure in place first and grow to fit it. ... Tableau Server was designed to operate inside a protected internal network. And naturally, thanks for your sweat! 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. Assign static IP addresses to all management interfaces, add A records to DNS, and track everything in an IP Address Management (IPAM) solution. Firewalls for Database Servers. 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. Your cadence should be to harden, test, harden, test, etc. Deploy an email filtering solution that can filter both inbound and outbound messages to protect your users and your customers. That has finally changed, but it’s a little late for the millions of people whose personal information was stolen. Chistian Oliver February 24, 2012 at 3:39 pm, Xerxes Cumming February 25, 2012 at 9:11 am. 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. Computer security training, certification and free resources. Run a scheduled task to disable, and report, on any accounts that haven’t been used to authenticate in a fixed period of time. It’s more scalable, easier to audit, and can carry over to new users or expanding departments much more easily than individual user permissions. 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. No production data should ever get onto a server until it is being backed up. See Security Hardening Checklist (Link opens in a new window) Installing security updates. Application hardening can be implemented by removing the functions or components that you don’t require. Otherwise, you never know when you might accidentally click something that runs with those elevated privileges. Turn on your firewall. This has resulted in a … Getting access to a hardening checklist or server hardening policy is easy enough. Reconsider your directory structure and the higher level permissions, and move that special case file or directory somewhere else to avoid using Deny Access. 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. This checklist can be used for all Windows installations. If you have a file system that tempts you to use “Deny Access” to fix a “problem” you are probably doing something wrong. 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. If you answered yes, you’re doing it wrong. That means the company network is now hosting pirated content. or would like the information deleted, please email firstname.lastname@example.org from the email address you used when submitting this form. Make sure that the configuration does not interfere with your management tasks, like pushing antivirus updates, checking logs, auditing software, etc. The database server is located behind a firewall with default rules to … We specialize in computer/network security, digital forensics, application security and IT audit. In addition to the items in the network equipment list above, you want to ensure the following for your wireless networking. Especially when the torrent client is sharing files to others. 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. Chapter Title. Please could you explain how this can be a threat? 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. It’s no secret that attackers traditionally go after low-hanging fruit when hacking a system. If a server doesn’t need to run a particular service, disable it. It’s a text file, it could contain code that executes when it is open. You probably won’t perform regular full backups of your workstations, but consider folder redirection or Internet based backups to protect critical user data. These files can be used to infect your computers and spread viruses. 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. 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. 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