Network Security

 

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Network administrators must ensure security is a priority. Most people believe that the primary focus of a network administrator should be to make sure users have access to data and other resources necessary to do their jobs. However, they are unaware of the effort and time required to ensure all data is protected.

End users will be happy as long they have the information they need without having to go through any hoops. Passwords and account names are only used to protect honest people. There are many ways to compromise account security. Any decent hacker knows more tricks than the network administrator. Although authentication services and biometrics can increase security, it is only a partial solution.

Network security cannot be compromised if you are responsible for a small business. Hackers aren't discriminating; they seek out sensitive financial or corporate data they can exploit. Customers and clients are treated equally; they have the right to the same level of service and reliability as large corporations.

Hackers are constantly improving security threats and creating new channels such as instant messaging and peer-to-peer connections to spread their attacks. My opinion is that employees misuse the internet to their disadvantage. Legal action will follow if a user sends or receives indecent content, visits inappropriate sites, or violates confidentiality. Network administrators must give priority to end user education.

Although insiders aren’t the most prevalent security issue, they can cause serious damage to a company’s reputation. Both corporate security professionals and the government are most concerned about insider attacks on IT infrastructure. It is crucial that any system access be removed immediately after an employee has been terminated. Between the time an IT employee leaves and their user privileges are removed, about half of all insider attacks occur. A co-worker was fired for poor work performance. After the employee was informed, the IT manager made arrangements for all user privileges being terminated. The IT manager allowed him to take personal items out of his office and computer but supervised him throughout. It took a lot of planning to coordinate all this but it worked well.

 

IT managers need to be vigilant for signs such as insubordination, anger at perceived mistreatment or refusal to share responsibility. These are all indicators that someone could be capable of data theft or system sabotage. IT managers should be vigilant if someone has access to sensitive systems and has a dispute with their bosses       

It is difficult to defend against insiders. However, knowing what to look out for and understanding your opponent are key. Managers should not only monitor system access but also inform employees that system changes can be tracked. Employers need to be cautious of employees who are unwilling or unable to share information about systems.

These six security principles can be applied to all Windows systems. Administrators can be confident that their networks are secure if they follow the six basic security principles discussed here.

The manager should first segment the network into trust areas and then provide controls at the border. Basic firewalls can block access to services. Advanced systems can inspect traffic and detect harmful behavior. It is possible to block access to TCP ports 1433 and 1434 at the border firewall. This allows Internet access only for those SQL systems that can be accessed via the Internet. Patching the SQL systems may prevent viruses and worms infecting a network.

The second is to reduce the impact of spoofed port numbers and increase use of port 80 through new services. Common open ports include port 80. This means that attacks on web servers will not be stopped by common firewalls. Applications such as streaming media and instant messaging will use the open port if a port is blocked. Trojans can listen on any port, and can even be made to appear like web traffic. An application-layer firewall can prevent misuse and overuse. It can ensure that a port is only open to specific servers.

The third thing everyone agrees on is that keeping patches current is the best way to increase security in a network. If known vulnerabilities were reduced via patches and configuration, over ninety percent could have been avoided. There are many ways to patch systems. Manually, you can download the patch and then test it on your system. After that, you can visit the Windows Update Site to view the available patches. Finally, you can decide whether to accept or reject any changes. You can set up automatic updates to connect periodically to Microsoft to inspect and download updates. Software Update Service, a free server program that periodically downloads patches from Microsoft when it is configured, can be downloaded for no cost. Microsoft Systems Management Server includes update and can be purchased separately from Windows. It provides multiple management services. Third-party products can also provide similar services.

Your network security can be improved by strengthening authentication processes. A strong password policy can help increase authentication. You can also use another form of authentication. Protect password databases and authentication materials with technology and physical security. You should also be aware that Windows authentication systems are different and that backward compatibility can mean less secure authentication even with the latest version of Windows. It is important to realize that your network is only as secure and secure as its weakest part.