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Network Security Tips

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network securityThis basic Network Security Guide provides useful security tips and methods to secure your network such as installing a updated antivirus program, email scanning programs, network monitoring tools, internet access policy and other security prevention methods.

  • Security Threats

There are a number of security threats that can be the cause of a network security attack. Main security threats are denial of service, distributed denial of service, viruses, Trojan horses, spywares, malwares, unauthorized access to the network resources and data, accidental deletion of the files and the uncontrolled internet access.

  • Virus Attack

A computer virus is a small program or an executable code that when executed and replicated, perform different unwanted and harmful functions for a computer and a network. Viruses can destroy your hard disks and processors, consume memory at a very large scale and destroy the overall performance of a computer or network. A Trojan is a malicious code that performs harmful actions but it cannot be replicated. Trojan can destroy systems’ critical data. A computer worm is a program that replicates to all network and destroy useful data. The viruses, malware, adware and Trojan horses can be prevented if you have an updated antivirus program with the latest pattern files.

  • Security policy

Being a network administrator, you should implement a security policy in your network and educate your network users and other employees about the security threats.

  • Email scanning

Email is a big source of a virus and malicious code. You should have installed an email scanning and monitoring program. You should also have a tight security policy at your proxy server and should block the unnecessary ports and web applications.

  • Unauthorized Access

Access to the network resources and data should be allowed only to the authorized persons. Every shared folder and resources in your network should have been accessed only by the authorized persons and should also be scanned and monitored regularly.

  • Accidental deletion of the files

What will you do if you accidentally delete your organization’s critical data? This is a question, which every network administrator and security specialists thinks of and wants answer. Few days before I read on internet news site that a computer technician accidentally deleted a financial company’s $ 10 billions records. To avoid the big troubles like this for you and for your company, you should have excellent data recovery software in your software inventory. Many data recovery tools are good enough to recover every piece of data if the hard disk is not physically badly damaged.

  • Network Monitoring Tools

You must have a good network monitoring tools to detect various suspicious things and monitor the various activities in your network such as network traffic, open ports, useless shared folders. GFI LanGuard Network security scanner is a good scanning and monitoring tool and it checks for all the possible methods, which a hacker can use to attack your network.

  • Internet Access Control

Internet can be a big source of viruses and the major security attacks, if you are unable to implement a tight security policy in your network, if you have a old definition anti virus program and if your haven’t put any check on your network user’s activity. Your gateway or proxy server, which is directly exposed to the internet should have very tight security, updated antivirus program and network monitoring tools.

  • Information Theft and cryptography attacks

Another threat to a network is to loss of the important information and this loss can be prevented, if you good encryption methods such as 128 bit security or 256 bit security encryption methods. In this way, your data when transferred through FTP programs, can be encrypted and can’t be read or use.

  • Unauthorized application installations

Another virus and security attack prevention method is to install only the authorized software applications to your network server and your all client computers. Nobody should be allowed to install any kind of program which can cause security threats such as songs or video programs, codec, gaming software or other web based applications.

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