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How to design
a secure network
This article explains how to design
a secure network
Network makes you able to share
programs, share files, share printers, electronic
mail between PCs in your home or office.
Design a network
Follow these steps to design a network
1. First of all you should have basic understanding
of the networking, which will provide you some rules
of networking, like where you should start, what you
need to do and how to achieve it.
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2. Now decide what type of network you
want, whether it is a simple peer-to-peer network or a Server
client network. “Peer to peer” networks are
designed for two or more PC’s, which are connected
together by network cables, whereas in a server client environment,
there is one server and at least one PC.
3. After having some idea of the type
of network you want and the PC's and servers that will be
connected together, you can develop understanding of issues
like type of cabling to be used, a "hub" should
be involved or not, or if there are any physical constraints.
4. When you have decided your ideal network
and components you need, now you would assemble everything
and do the necessary installations and configuration.
Making the Network secure.
Use following tips to make your network
secure
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1. First of all make
sure that you have set a local security policy. This
security policy actually explains the rules on which
security will be implemented in your company. A security
policy defines the exact level of security. It also
explains roles and responsibilities of users, administrators
and managers etc.
2. Keep note that your operating systems and applications
are compatible with the recent service packs and hot
fixes. Keeping your systems patched will close the
back holes, which can be exploited by hackers.
3. Keep record of your network devices. Make a list
of all hardware and software components, and note
which software installations provide weak security
configurations.
4. Always scan TCP/UDP services. Remove or disable
unnecessary services. Unneeded services are usually
the entry point for hackers, who use them to gain
control of your system.
5. Always try to establish a strong password policy.
6. Try not to accept code from non-trusted sources.
7. Block those emails attachment, which have extensions
like .bas, .bat, .exe and .vbs.
8. Only provide the necessary rights to system resources
and implement the concept of "least privilege".
9. Perform the network security testing by yourself
and find the holes if these exist.
10. Implement the security in dept. Your security
should not rely on just one control or a single operation.
It should be iterative and deep.
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