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If Internet is connected to a router, you don't have to worry (unless you've set the DMZ host setting in the router or opened up unknown ports)<br />
Router has a built-in firewall.<br />
If you don't have a router, then some sort of software firewall should be running, else your computer is at risk from attack from the Internet.
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If Internet is connected to a router, you don't have to worry (unless you've set the DMZ host setting in the router or opened up unknown ports)
Router has a built-in firewall.
If you don't have a router, then some sort of software firewall should be running, else your computer is at risk from attack from the Internet.

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<a href="http://www.homenethelp.com/router-guide/features-firewall.asp" rel="ugc">http://www.homenethelp.com/router-guide/features-firewall.asp</a>
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http://www.homenethelp.com/router-guide/features-firewall.asp [http://www.homenethelp.com/router-guide/features-firewall.asp]

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The SPI Firewall is switched off.<br />
<br />
What is this and should I be worried?
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The SPI Firewall is switched off.

What is this and should I be worried?

3com firewall The SPI Firewall is switched off.

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.

Software Firewalls

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.