What's cyber security?

Computer security, cybersecurity or information technology security (IT security) is the security of computer systems in the theft of or damage to their own hardware, applications, or digital information, in addition to in the disruption or misdirection of their solutions they supply. The area is becoming more important because of greater reliance on computer technologies, the web and wireless system standards like Bluetooth and Wi-Fi, and as a result of development of "smart" devices, such as televisions, smartphones, and the numerous devices which constitute the"Internet of things". Due to its complexity, both regarding science and politics, cybersecurity can also be one of the significant challenges in the modern world.

What's cyber security?

Organizations face many threats to their data systems and information. Knowing all of the fundamental elements to cyber safety is the first step to fulfilling these threats.

Types of cyber security.

The reach of cyber protection is broad. The core regions are explained below, and some other fantastic cyber security plan must take all of them into consideration.

Critical infrastructure includes the cyber-physical systems which society is based on, for example, electricity grid, water purification, traffic lighting and hospitals. Plugging a power plant to the world wide web, as an instance, makes it vulnerable to cyber attacks. The solution for associations accountable for critical infrastructure would be to carry out due diligence to safeguard recognize the vulnerabilities and protect from them. Everyone else must evaluate the way an attack on critical infrastructure that they rely on could impact them and develop a contingency plan.
Critical infrastructure.
Critical infrastructure includes the cyber-physical systems which society is based on, for example, electricity grid, water purification, traffic lighting and hospitals. Plugging a power plant to the world wide web, as an instance, makes it vulnerable to cyber attacks. The solution for associations accountable for critical infrastructure would be to carry out due diligence to safeguard recognize the vulnerabilities and protect from them. Everyone else must evaluate the way an attack on critical infrastructure that they rely on could impact them and develop a contingency plan.
Network security guards against malicious intrusion in addition to malicious insiders. Ensuring network security frequently requires trade-offs. By way of instance, access controls like additional logins may be required, but slow down productivity. Tools used to track network safety create a great deal of information -- so much that legitimate alarms are often overlooked. To help better handle network security monitoring, safety teams are using machine learning how to flag abnormal traffic and alert to risks in real time.
Network security.
Network security guards against malicious intrusion in addition to malicious insiders. Ensuring network security frequently requires trade-offs. By way of instance, access controls like additional logins may be required, but slow down productivity. Tools used to track network safety create a great deal of information -- so much that legitimate alarms are often overlooked. To help better handle network security monitoring, safety teams are using machine learning how to flag abnormal traffic and alert to risks in real time.
The business's move to the cloud generates new safety challenges. By way of instance, 2017 has seen nearly weekly information breaches from badly configured cloud cases. Cloud suppliers are creating new safety tools to help business users secure their information, however, the bottom line remains: Moving into the cloud isn't a panacea for performing due diligence in regards to cyber security.
Cloud security.
The business's move to the cloud generates new safety challenges. By way of instance, 2017 has seen nearly weekly information breaches from badly configured cloud cases. Cloud suppliers are creating new safety tools to help business users secure their information, however, the bottom line remains: Moving into the cloud isn't a panacea for performing due diligence in regards to cyber security.
Application security (AppSec), especially web application security, has become the weakest technical point of attack, but few organizations adequately mitigate all the OWASP Top Ten web vulnerabilities. AppSec begins with secure coding practices, and should be augmented by fuzzing and penetration testing. Rapid application development and deployment to the cloud has seen the advent of DevOps as a new discipline. DevOps teams typically prioritize business needs over security, a focus that will likely change given the proliferation of threats.
Application security.
Application security (AppSec), especially web application security, has become the weakest technical point of attack, but few organizations adequately mitigate all the OWASP Top Ten web vulnerabilities. AppSec begins with secure coding practices, and should be augmented by fuzzing and penetration testing. Rapid application development and deployment to the cloud has seen the advent of DevOps as a new discipline. DevOps teams typically prioritize business needs over security, a focus that will likely change given the proliferation of threats.
IoT describes a huge array of crucial and non-critical cyber physiological systems, such as appliances, sensors, printers and safety cameras. IoT devices often ship in an insecure condition and give little to no security, posing risks to not just their customers, but also to other people online, since these devices frequently find themselves part of a botnet. This presents special security challenges for the home users and society.
Internet of things (IoT) security.
IoT describes a huge array of crucial and non-critical cyber physiological systems, such as appliances, sensors, printers and safety cameras. IoT devices often ship in an insecure condition and give little to no security, posing risks to not just their customers, but also to other people online, since these devices frequently find themselves part of a botnet. This presents special security challenges for the home users and society.

Server Troubleshooting Tips: How to Solve Common Server Problems

Server troubleshooting can be a complicated process. It’s easy for SQL Server performance troubleshooting activities to be based on misconceptions or incorrect assumptions, because servers can be affected by such a wide range of factors. This can lead to hours of time wasted in attempts to identify the root cause of a server issue. To ... Read more Server Troubleshooting Tips: How to Solve Common Server Problems

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Server troubleshooting can be a complicated process. It’s easy for SQL Server performance troubleshooting activities to be based on misconceptions or incorrect assumptions, because servers can be affected by such a wide range of factors. This can lead to hours of time wasted in attempts to identify the root cause of a server issue. To ... Read more Server Troubleshooting Tips: How to Solve Common Server Problems

The post Server Troubleshooting Tips: How to Solve Common Server Problems appeared first on DNSstuff.

Server troubleshooting can be a complicated process. It’s easy for SQL Server performance troubleshooting activities to be based on misconceptions or incorrect assumptions, because servers can be affected by such a wide range of factors. This can lead to hours of time wasted in attempts to identify the root cause of a server issue. To save your company time and resources, you need a basic understanding of common server problems and how to solve them.

server troubleshooting checklist

Troubleshooting SQL Server
Server Troubleshooting Checklist
Choosing the Right SQL Server Performance Troubleshooting Tool
Getting Started With Server Troubleshooting Tools

You can also use this guide as a server troubleshooting checklist to walk you through key Windows Server troubleshooting and Linux server troubleshooting steps.

Troubleshooting SQL Server

Server Problem Classification

Effective and advanced Windows and Linux server troubleshooting steps start with correctly classifying server issues. There are three main categories of server problems:

  • Operating system configuration issues
  • Hardware issues
  • Services and application-related issues

Knowing which category the issue you’re encountering falls into can potentially save you hours of time otherwise wasted on redundant server troubleshooting. What seems like an operating system issue, like unexpected reboots, could be caused by a hardware problem, like faulty memory. In other words, avoid jumping to conclusions without proper investigation.

Server Troubleshooting Checklist

    • Establish and Maintain a Standardized Troubleshooting Routine
    • Start at the Bottom and Work Your Way Up
    • Troubleshoot Connectivity Issues
    • Troubleshoot Name Resolution Issues
    • Troubleshoot Application Issues
    • Troubleshoot Print Server Issues
    • Troubleshoot Email Server Issues
    • Troubleshoot Terminal Services Issues
    • Troubleshoot Dial-Up Remote Access Server Issues

The following server troubleshooting checklist can help you conduct advanced Windows Server troubleshooting, IIS server troubleshooting, and troubleshooting Apache server. These tips and best practices can assist you in addressing a range of subjects, including Microsoft Exchange Server troubleshooting scenarios, slow server troubleshooting, and troubleshooting Linux server best practices.

🗹 Establish and Maintain a Standardized Troubleshooting Routine

Identifying and correcting server problems regularly and efficiently starts with employing a robust and standardized troubleshooting policy. This policy should be complied with every time an issue occurs.

Server troubleshooting is generally more complicated when applied to client machines. This is both because the operating system is more complex and because so many services run off the server machine. By maintaining a server troubleshooting checklist, you can simplify the troubleshooting process, helping ensure you don’t miss crucial steps or overlook important information.

🗹 Start at the Bottom and Work Your Way Up

Server troubleshooting should begin with determining whether the physical layer is performing properly. This includes the server computer hardware, the cabling, and any attached peripherals.

Start by replacing network cards or cables to determine whether faulty hardware is the cause of the issue. If you need to test long runs of cables, consider using a multimeter or cable tester.

Hardware could be the root cause of the issue if you have recently added new hardware to the server. To rule out this possibility, make sure the new hardware is compatible with the operating system. It’s also important to ensure the correct drivers are installed for any new hardware.

🗹 Troubleshoot Connectivity Issues

If you’ve followed the earlier steps and determined hardware isn’t the source of the problem, the next step is to check the operating system configuration. A standard business network runs on TCP/IP, and inappropriate or incorrect TCP/IP settings could cause addressing and routing issues. Confirm the TCP/IP settings are correct before proceeding.

TCP/IP settings have been known to mysteriously and suddenly modify themselves. For instance, if you install a new application, you may find your TCP/IP settings have changed. A change is most likely to occur when the server’s TCP/IP configuration is reset to make the device a DHCP client. In most instances, servers should have static IP addresses. If your DNS server or domain controller’s configuration has changed, your clients will experience issues, even if you don’t initially notice a file or print server problem.

🗹 Troubleshoot Name Resolution Issues

Names may not seem important at face value but remember computers use names to communicate. These names must be resolved to IP addresses. If you have encountered a connectivity issue, try pinging another system by both IP address and name. If the server fails to communicate by host name but can connect via IP address, check the WINS settings, DNS settings, and HOSTS and LMHOSTS files.

🗹 Troubleshoot Application Issues

Applications installed on servers aren’t the same as productivity applications installed on workstations. Server applications usually allow you to manage and monitor your server—think disk utilities, packet sniffers, or network monitors. They may add another server service, like a proxy server installed on top of the operating system for the server. These applications must also be compatible with the operating system.

Windows Server users can look at issues related to applications in the application log. Moreover, the Certified for Windows 2000 designation can be used to help you evaluate server application compatibility.

🗹 Troubleshoot Print Server Issues

Identifying the source of a printing problem can be complicated, because the issue could exist at any of the following levels:

  • The print server configuration
  • The printing device attached to the print server computer
  • The client configuration
  • The physical connections between server and network or printer and server

When troubleshooting print server issues, start by ensuring the printing device is functioning properly and all the connections are fully secure. Confirm the correct print drivers are installed and the print spooler service is running. You should also ensure there’s sufficient disk space on the server to accommodate spooling. Check the printer permissions settings.

Lastly, if your network is a Windows 2000 or .NET domain, review the group policy settings for printers and tweak if necessary.

🗹 Troubleshoot Email Server Issues

Pretty much everyone uses email—it’s by far the most-used network application in 2020. Problems with the email server can be caused by the same connectivity issues associated with TCP/IP settings and hardware issues, so this is a good place to begin your email server troubleshooting.

Once you’ve confirmed the issue isn’t caused by a connectivity problem, take the following steps:

  • Ensure the mail exchange resource records in your DNS entries are accurate.
  • Ensure the mail server has sufficient disk space for user mailboxes and impose mailbox size limits as appropriate if you have high-volume users.
  • Ensure your mail server is configured to enable relay if you want to receive mail from alternative mail servers. Opening your server to relays can make it vulnerable to use for relaying spam. To avoid this, ensure your server is configured to accept relay messages only to your own mail domains.

🗹 Troubleshoot Terminal Services Issues

If you’re encountering problems with your terminal server, do the following:

  • Ensure the terminal server is running in application mode by checking your Terminal Services Configuration settings. If you don’t do this, only administrators will be able to connect, and you’ll only be able to have two active sessions running at once.
  • In a Windows 2000/.NET domain, check the Group Policy and the account properties of individual users in Active Directory. You should do this if users are unable to connect or are disconnected unexpectedly.
  • Ensure you have set up a Terminal Services license server, and you have enough licenses available.

🗹 Troubleshoot Dial-Up Remote Access Server Issues

A remote access server lets clients dial in and connect to your network, or create a connection via VPN. If clients can’t make a connection with your remote access server, check the connectivity issues mentioned earlier in this guide.

If these don’t help you rectify the issue, do the following:

  • Ensure remote access servers are appropriately installed and configured, and the service is started.
  • Ensure your PPTP, L2TP, and dial-in ports are configured to accept inbound remote access calls.
  • Ensure the remote access server has been configured to allow connections on the protocols used by remote clients—e.g., IPX or NetBEUI.

sam-summary

Choosing the Right SQL Server Performance Troubleshooting Tool

This guide aims to help you simplify the process of server troubleshooting and reduce the amount of time wasted looking for solutions in the wrong places. But even the most robust troubleshooting strategy will be time-consuming and resource-intensive when carried out manually. To make your job easier, I recommend SolarWinds® Server & Application Monitor (SAM).

SolarWinds SAM is an extremely versatile tool with support for advanced Windows Server troubleshooting, Microsoft Exchange Server troubleshooting, IIS server troubleshooting, Apache server troubleshooting, and much more. This tool allows you to monitor website downtime and restart application pools and sites to help ensure continuous uptime. It assists you in pinpointing how connections, site bindings, slow processes, and network latency impact web server performance. It also gives you complete visibility into server load and resource usage for metrics including memory, CPU, disk, and HTTP requests.

SAM helps you troubleshoot hardware problems to ensure multi-vendor servers stay up and running. You can monitor key hardware performance metrics, manage server capacity and forecast resource utilization, and remotely troubleshoot slow processes and services impacting server and application performance.

With SAM, you can get started monitoring within a few minutes. It enables you to monitor both Azure and AWS IaaS, PaaS, and SaaS. It gives you access to more than 1,200 application monitoring templates and offers a fully customizable server monitoring experience, with the ability to map and visualize infrastructure and application dependencies. This intuitive program delivers a range of advanced features via a user-friendly interface.

Getting Started With Server Troubleshooting

Server troubleshooting isn’t easy, and it can sometimes feel like the cause of an issue is impossible to put your finger on. A tool like SolarWinds SAM can save you money, time, and resources. This software can help you rapidly identify problems before they have a major impact on performance, keeping you and your users happy. A 30-day free trial is available.

The post Server Troubleshooting Tips: How to Solve Common Server Problems appeared first on DNSstuff.


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