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A firewall
is generally a software package or a combination of hardware and
software and typically consists of several layers of protection designed
to intercept and prevent penetration by intruders. Today there are three
basic types of firewalls.
- The
simplest type is known as a screening router or packet filter
firewall. This approach screens every packet for content and decides
whether to pass through or deny access. This approach provides the
very minimum of security and is easily broached by sophisticated
intruders who can falsify or spoof a packet so that it appears to
come from a legitimate source.
- A
second firewall approach utilizes a technique known as stateful
inspection. This approach is more adept than packet filtering at
preventing spoofing by comparing patterns of arriving data with data
from previously accepted packets.
- The
third and generally accepted as the most secure approach is known as
the proxy server. The proxy server sits between the internal network
and all locations outside the network and does not allow direct
traffic to pass directly through. The proxy server changes the IP
address of the user from anyone outside of the firewall. When an
internal user access an external web site the source IP address on
the outbound HTTP packet appears as the address of the firewall and
not that of the originator. When an external data packet arrives at
the firewall, the application software examines and evaluates the
packet's IP address and content, compares it with the firewall
appliance's rule set to verify whether it complies with the
pre-defined security policies.
Click
on each link below for a demo of how a personal firewall can
protect you
Firewall
Solutions. We can advise you on the best value and most reliable
solutions to guard your network against malicious intrusion.
We can provide expertise for all your security requirements,
including troubleshooting potential security infringements.
Anti
Virus Solutions
A virus is a type of software that infects a computer.
Viruses can be a simple prank—an annoying pop-up message or blue
screen, for instance. But too often a virus is a malicious and outright
attempt to destroy data and programs
If you’re like most computer users, you have probably experienced a
computer crash caused by a virus, and you feel that your computer is not
fully protected from hackers' attacks.
Do you know that there are about 60,000 known computer viruses that can
be received by email, floppy disk or contracted just by surfing the
Internet? This number is growing daily, and their reach is frightening.
Only in matter of seconds viruses are able to destroy your computer and
make your private information available to others. This might have
happened already ...
Do you want to protect and secure your computer or network?
Why wait and take any chances? You do not want to have your hard disk
destroyed, your personal information stolen and your files erased.
With the growing number of viruses - worms, Trojans and other hazards
that can easily infect your computer, protecting your PC has never been
more important.
We
provide anti virus advice and can recommend, install and configure
solutions for single Server/PC to total network protection.
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We are
authorised resellers of AVG Anti Virus solutions.
This
product set is ideal for small business and home users. It is
extremely cost effective and comes with a 2 Year subscription
included in the purchase price. Ask for details or click on link
> to purchase direct from AVG
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