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Internet 'Grey Areas'
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Is your network security and user access in the right balance?
The whole meaning of networking is to share programs, but
granting others to access a computer device reveals an open
window for those with foul motives, too. In the early days
networks were quite secure because they were closed in systems,
and to do any harm you had to get physical access to a server
wired to the LAN. Remote access and Internet possibility to hook
up has changed that. Broader availableness and less cost of
broadband (DSL and cable) connections means that even home
computers remain linked up to the Internet round-the-clock,
which add the chances for hackers to gain access to computers.
Computer operating systems were originally planned for
stand-alone computers only, not networked ones, and security was
not an issue. When computer networking became known,
applications and operating systems concentrated on easy
accessibility rather than security. Because of this earlier
focus on accessibility; security are now retrofitted into a lot
of hardware systems. Modern operating systems such as Windows XP
are planned with security in mind, but they still have to
operate using conventional networking protocols, which can
result in security problems.
Security versus access. The users want easy access to
network resources. Administrators want to remain the network
secure. These two goals are at odds, because access and security
are always on conflicting ends of the scale; the more you have
of one, the less you have of the other.
For business computer networks, the key is to hit a balance so
that employees are not annoyed by security measures, while
trying to maintain a level of protection that
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will keep
unauthorized individuals from getting access.
Internal network security threats are those that come
from within the organization, as opposed to those that come
through the Internet. Internal threats include employees who on
purpose attempt to nick data or bring in viruses or attacks on
the computer network. Other internal threats are posed by
outside employees (contract workers, janitorial services and
people posing as utility company employees) who have physical
access to the LAN computers. Though, many internal threats are
unintended. Employees may install or use their own software or
hardware for a private purpose, unaware that it poses a security
threat to their computers and the complete network.
External security threats are those that come from
outside the LAN, typically from the Internet. These threats are
the ones we usually think of when we talk about hackers and
computer network attacks. Such people can make use of flaws and
characteristics of computer operating systems and software
applications. They take advantage of the way various network
communications protocols work to do a range of things, including
the following: Enter a system and access (read, copy, change or
delete) its data. Break down a system and harm or destroy
operating system and application files so they do not work
anymore. Install virus and worms that can spread to other
systems across the LAN. Or use the system to start attacks
against other systems or other network.
About the author:
Huge amount of network security information on this site. Check
it out. http://www.networksecurity.infostairs.com
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