Administration of your router / access point should be "local only", namely, there is no reason to let people from another country access to your network hardware. Network hardening is the process of securing a network by reducing its potential vulnerabilities through configuration changes, and taking specific steps. Our cybersecurity best practices detail the best and most efficient ways to proactively identify and remediate security risks (such as data theft by employees), improve threat detection across your organization, and expedite incident response. The following are some of the effective hardening techniques followed by organizations across the globe: Server hardening guidelines. The information in this document is intended for end users of Cisco products. Since any service that's enabled and accessible can be attacked, this principle should be applied to network security too. This will highlight potential intrusions, signs of malware infections or a typical behavior. Server hardening, in its simplest definition, is the process of boosting server’s protection using viable, effective means. 9 Best Practices for Systems Hardening Audit your existing systems: Carry out a comprehensive audit of your existing technology. Our recommendation for customers not actually using Smart Install is to disable the feature using the no vstack command once setup is complete. Then, we’ll dive into the three As of information security: authentication, authorization, and accounting. From a security point of view, rather than legal, a login banner should not contain any specific information about the router name, model, software, or ownership. Splunk can grab logs data from a wide variety of systems, and in large amounts of formats. You could even wake someone up in the middle of the night if the event was severe enough. Logs analysis systems are configured using user-defined rules to match interesting or a typical log entries. Traffic encryption allows a secure remote access connection to the device. supports HTML5 video. It watches for signs of an attack on a system, and blocks further attempts from a suspected attack address. More information on the use of Smart Install and how to determine/limit the exposure of this feature can be found in the Action Required to Secure the Cisco IOS and IOS XE Smart Install Feature security advisory. Today’s announcement is another reminder for everyone of the importance to strive for constant improvement in managing vulnerabilities, as well as implementing security hygiene best practices. © 2007 Cisco Systems, Inc. All rights reserved. We recommend the following best practices: Use a WIDS solution to monitor for rogue APs in both the 2.4 GHz and 5 GHz spectrum bands. Receive ACLs are also considered a network security best practice and should be considered as a long-term addition to good network security. In the fourth week of this course, we'll learn about secure network architecture. 2. Transcript. This is true too for network hardening. Endpoint Hardening (best practices) September 23, 2020 by Kurt Ellzey. Firewalls for Database Servers. Hopefully, this will let the security team make appropriate changes to security systems to prevent further attacks. We'll also discuss network security protection along with network monitoring and analysis. In this instruction will describes the best practices and security hardening configuration for a new Cisco switch to secure it and also increases the overall security of a network infrastructure in an enterprise data center. Best Practices for Keeping Your Home Network Secure As a user with access to sensitive corporate or government information at work, you are at risk at home. Any good design has three basic steps: plan, implement and verify. That's a lot of information, but well worth it for an IT Support Specialist to understand! For each of the targeted protocols, Cisco advocates that customers follow best practices in the securing and hardening of their network devices. Because information can be disclosed in an interactive management session, this traffic must be encrypted so that a malicious user cannot gain access to the data that is transmitted. SNMP provides information on the health of network devices. Attempted connections to an internal service from an untrusted source address may be worth investigating. IT Security: Defense against the digital dark arts, Construction Engineering and Management Certificate, Machine Learning for Analytics Certificate, Innovation Management & Entrepreneurship Certificate, Sustainabaility and Development Certificate, Spatial Data Analysis and Visualization Certificate, Master's of Innovation & Entrepreneurship. You can do this through network traffic monitoring and logs analysis. You can read more about Splunk and the supplementary readings in this lesson. You'd want to analyze things like firewall logs, authentication server logs, and application logs. It was truly an eye-opening lesson in security. Analyzing logs is the practice of collecting logs from different network and sometimes client devices on your network, then performing an automated analysis on them. This flood guard protection can also be described as a form of intrusion prevention system, which we'll cover in more detail in another video. Google. That would show us any authentication attempts made by the suspicious client. Keep Your Servers’ Operating Systems Updated. This course covers a wide variety of IT security concepts, tools, and best practices. Update the firmware. Periodically monitor for rogue APs in both the 2.4 GHz and 5 GHz spectrum bands by using a handheld monitor in areas where there is little or no wireless coverage. When this one is reached, it triggers a pre-configured action. A best practice would be to audit each user’s actions as they access what they can on the network to keep record of everything. THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. To give employees access to printers, we'd configure routing between the two networks on our routers. This is the concept of using VLANs to create virtual networks for different device classes or types. Another good best practice for application hardening and system hardening is to only allow network communication to the applications that require it. This document provides a practitioner's perspective and contains a set of practical techniques to help IT executives protect an enterprise Active Directory environment. Network Hardware Hardening 9:01. Don’t assume you’re safe. It would also tell us whether or not any data was stolen, and if it was, what that data was. It introduces threats and attacks and the many ways they can show up. Part of this alerting process would also involve categorizing the alert, based on the rule matched. We’ll give you some background of encryption algorithms and how they’re used to safeguard data. We’ll also cover network security solutions, ranging from firewalls to Wifi encryption options. In this video, we'll cover some ways that an IT Support Specialist can implement network hardware hardening. Joe Personal Obstacle 0:44. Alerts could take the form of sending an email or an SMS with information, and a link to the event that was detected. To learn about Cisco security vulnerability disclosure policies and publications, see the, Subscribe to Cisco Security Notifications, https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180416-tsa18-106a, Fortify Simple Network Management Protocol, Action Required to Secure the Cisco IOS and IOS XE Smart Install Feature, Cisco Guide to Harden Cisco IOS XR Devices, Cisco Guide to Securing Cisco NX-OS Software Devices, Protecting Your Core: Infrastructure Protection Access Control Lists, Control Plane Policing Implementation Best Practices, Cisco IOS Software Smart Install Remote Code Execution Vulnerability, Cisco IOS Software Smart Install Denial of Service Vulnerability, Cisco IOS and IOS XE Software Smart Install Denial of Service Vulnerability, Cisco IOS and IOS XE Software Smart Install Memory Leak Vulnerability, Cisco Smart Install Protocol Misuse (first published 14-Feb-2017), Cisco IOS and IOS XE Software Smart Install Denial of Service Vulnerability (first published 28-Mar-2018), Cisco IOS and IOS XE Software Smart Install Remote Code Execution Vulnerability (first published 28-Mar-2018), Cisco Event Response: Cisco ASA and IOS Vulnerabilities, Cisco Adaptive Security Appliance SNMP Remote Code Execution Vulnerability, Alert (TA18-106A): Russian State-Sponsored Cyber Actors Targeting Network Infrastructure Devices, Russia government hackers attacking critical national infrastructure in UK and US, U.S. pins yet another cyberattack on Russia, U.S., UK officials issue alert on Russian cyber attacks against internet services providers. Specific best practice recommendations for each of the targeted protocols listed in the joint technical alert are provided here. Flood guards provide protection against Dos or denial of service attacks. © 2021 Coursera Inc. All rights reserved. Stop Data Loss. This works by identifying common flood attack types like sin floods or UDP floods. They're subject to a lot more potentially malicious traffic which increases the risk of compromise. You can think of this as whitelisting, as opposed to blacklisting. We'd also implement network ackles that permit the appropriate traffic, To view this video please enable JavaScript, and consider upgrading to a web browser that. It can also be configured to generate alerts, and allows for powerful visualization of activity based on logged data. There's a general security principle that can be applied to most areas of security, it's the concept of disabling unnecessary extra services or restricting access to them. As an IT support specialist, you should pay close attention to any external facing devices or services. By ensuring that your processes adhere to these best practices, you can harden data security from top to bottom, and meet or exceed the security … YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. Network Software Hardening 5:00. ● how to evaluate potential risks and recommend ways to reduce risk. So, if we see a suspicious connection coming from a suspect source address and the firewall logs to our authentication server, we might want to correlate that logged connection with the log data of the authentication server. Believe it or not, consumer network hardware needs … 1 Network Core Infrastructure Best Practices Yusuf Bhaiji A Fortune 1000 enterprise can have over 50 million lines of configuration code in its extended network. Enable network encryption. Customers who do use the feature—and need to leave it enabled—can use access control lists (ACLs) to block incoming traffic on TCP port 4786 (the proper security control). In this document of how to configure security hardening on a … Hardening refers to providing various means of protection in a computer system. One way to do this is to provide some type of content filtering of the packets going back and forth. This can usually be configured on a firewall which makes it easier to build secure firewall rules. This is usually a feature on enterprise grade routers or firewalls, though it's a general security concept. ● how various encryption algorithms and techniques work as well as their benefits and limitations. Cover some ways that an it Support specialists to implement of what your typical network looks! That data was this data in order to perform attacks against the network, a new will... 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