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Understanding Internet Firewall – Do I Need One?

Many novice computer users do not really understand the importance of firewall. It is easier for a not so savvy computer user to understand antivirus and antispyware software than the firewall because the name “firewall” is somewhat misleading.

A firewall is a program or software that prevents malicious attacks coming from the internet from penetrating your computer or network. There are millions of “zombie computers” in the net that are all the time scanning for other computers connected to the internet that have security holes. Without a firewall, a computer that is connected to the internet is highly vulnerable to attacks and can be infected within twenty minutes. A firewall’s function is to filter incoming internet data, preventing those that are known to be malicious from gaining access. The firewall works by “plugging” the “security holes” where malicious attacks usually get through.

Windows XP has a built in firewall, the Windows Firewall. You can configure it through the Control Panel but its default settings are probably the best settings you can have. Setting the firewall security too high could prevent or filter out clean traffic from entering your computer.

The best antivirus software like Eset Smart Security, AVG Internet Security, Kaspersky Internet Security, and Avast Antivirus Pro has built in firewalls. When you install any one of these security software in your PC, you need to turn off Window Firewall because it is not advisable to run two firewalls at the same time. So you have to choose between using the firewall that comes with your antivirus software or using Windows Firewall. Windows Firewall actually works as good as firewalls from third-party software.

Once your firewall is configured and turned on (you will know when Windows Firewall is not on because a warning icon and message will appear on your taskbar) you can literally forget about it; no need to baby sit it because it works almost independently in the background. Some firewalls like the one that comes with AVG Internet Security every now and then prompt you to decide whether to allow or block a particular traffic from gaining access to your PC. This usually happens when you are updating a newly installed software that are not yet in the “trusted list” of the firewall.

Having a firewall is one of the most important computer security measures that you can take.

About the Author

Ms. Pinky is a Computer Support Specialist for more than 25 years. Has a Bachelor of Science Degree in Computer Engineering, MS Research work in Systems Engineering.

Get more free computer tips on her blog at http://www.computerhelpdeskandsupport.com/

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Accesso a Internet: Digital Divide, Neutralit Della Rete, Rete Civica, Banda Larga, Nabaztag, Community Network, Point-To-Point Protocol $16.97 New – Fonte: Wikipedia. Pagine: 23. Capitoli: Digital divide, Neutralit della Rete, Rete civica, Banda larga, Nabaztag, Community network, Point-to-Point Protocol, Hotspot, I-mode, Dial-up, VDSL2, Filtro famiglia, Child Online Protection Act, Wireless Application Protocol, Single-Pair High-speed Digital Subscriber Line, MSN TV, Great Firewall, TOP-IX, Broadband Wireless Access, Progetto Socrate, Foneros, SKYDSL, Point of presence, ITU G.993.2, Navigazione differenziata, BeIA. Estratto: Il digita

Accesso a Internet: Digital Divide, Neutralit Della Rete, Rete Civica, Banda Larga, Nabaztag, Community Network, Point-To-Point Protocol $10.78 New – Fonte: Wikipedia. Pagine: 23. Capitoli: Digital divide, Neutralit della Rete, Rete civica, Banda larga, Nabaztag, Community network, Point-to-Point Protocol, Hotspot, I-mode, Dial-up, VDSL2, Filtro famiglia, Child Online Protection Act, Wireless Application Protocol, Single-Pair High-speed Digital Subscriber Line, MSN TV, Great Firewall, TOP-IX, Broadband Wireless Access, Progetto Socrate, Foneros, SKYDSL, Point of presence, ITU G.993.2, Navigazione differenziata, BeIA. Estratto: Il digita

Adtran NetVanta 1335 Multi-Service Access Router – 1 x SFP – 2 x 10/100/1000Base-T LAN, 24 x 10/100Base-TX LAN $1604.09 The NetVanta 1335 Multi-Service Access Router is a performance-enhanced platform that addresses the need of multiple networking devices in a single compact platform. The NetVanta 1335 integrates a modular IP access router, 24-port Layer 3 switch, firewall, VPN appliance, and DSU/CSU, all in one platform. In addition, the NetVanta 1335, injected with Rapid-Route technology, delivers enhanced performance necessary for IP telephony, corporate connectivity and Internet access, even with advanced services enabled.

Adtran NetVanta 1335 Multi-Service Access Router with PoE – 1 x SFP – 2 x 10/100/1000Base-T LAN, 24 x 10/100Base-TX LAN $2395 The NetVanta 1335 Multi-Service Access Router is a performance-enhanced platform that addresses the need of multiple networking devices in a single compact platform. The NetVanta 1335 integrates a modular IP access router, 24-port Layer 3 Power over Ethernet (PoE) switch, firewall, VPN appliance, and DSU/CSU, all in one platform. In addition, the NetVanta 1335, injected with Rapid-Route technology, delivers enhanced performance necessary for IP telephony, corporate connectivity and Internet access, even with advanced services enabled.

Adtran NetVanta 1335 Multi-Service Access Router with PoE – 1 x SFP – 2 x 10/100/1000Base-T LAN, 24 x 10/100Base-TX LAN $2467.32 The NetVanta 1335 Multi-Service Access Router is a performance-enhanced platform that addresses the need of multiple networking devices in a single compact platform. The NetVanta 1335 integrates a modular IP access router, 24-port Layer 3 Power over Ethernet (PoE) switch, firewall, VPN appliance, and DSU/CSU, all in one platform. In addition, the NetVanta 1335, injected with Rapid-Route technology, delivers enhanced performance necessary for IP telephony, corporate connectivity and Internet access, even with advanced services enabled.

Adtran NetVanta 3200 Access Router – 1 x 10/100Base-TX LAN, 2 x T1/FT1 WAN $1340 The NetVanta 3200 is an access router designed for cost-effective Internet access, corporate Frame Relay, point-to-point connectivity, and Virtual Private Networking (VPN) for applications requiring bandwidth of dual-T1′s. Residing in a standalone desktop chassis with a plastics enclosure, the NetVanta 3200 is a single platform that offers one interface slot and one 10/100Base-T Ethernet LAN port. The modular NetVanta 3200 preconfigured with a Dual T1/FT1 Module and includes a Stateful Inspection Firewall, QoS for delay sensitive traffic like VoIP, NAT and DHCP, and all managed with a familiar Command Line Interface (CLI).

Adtran NetVanta 3205 Modular Access Router – 1 x Expansion Slot – 1 x 10/100Base-TX LAN $476 Adtran NetVanta 3205 Modular Access Router delivers cost-effective Internet access, MPLS, corporate Frame Relay, point-to-point connectivity, and ADSL for applications requiring up to two T1s. The NetVanta 3205 DC includes one Ethernet LAN port, a built-in firewall for network security, QoS to priority delay sensitive traffic like VoIP, DHCP to assign IP addresses, and Network Address Translation (NAT) as well to conceal private address.

Adtran NetVanta 3305 Access Router – 2 x 10/100Base-TX LAN $1295 The NetVanta 3305 is an access router designed for cost-effective Internet access, corporate Frame Relay, point-to-point connectivity, and Virtual Private Networking (VPN) for applications requiring bandwidth from 56k to three-T1s. Residing in a 1U, rackmountable metal chassis, the NetVanta 3305 is a single platform that offers two interface slot and two 10/100Base-T Ethernet LAN port. The modular NetVanta 3305 will house a variety of Network Interface Modules (NIMs) and includes a Stateful Inspection Firewall, QoS for delay sensitive traffic like VoIP, NAT and DHCP, and all managed with a familiar Command Line Interface (CLI).

Adtran NetVanta 3430 Modular Access Router – 1 x Interface Card , 1 x CompactFlash (CF) Card – 2 x 10/100Base-TX LAN/DMZ $895 The NetVanta 3430 is a modular access router that uses RapidRoute technology to deliver the high-packet throughput required for IP telephony, corporate connectivity, and Internet access. This performance-enhanced platform delivers wire-speed throughput, even with advanced services enabled like Quality of Service (QoS), NAT, firewall, and VPN.

Adtran NetVanta 3448 Multiservice Access Router with VPN – 10 x 10/100Base-TX LAN $1482.62 The NetVanta 3448 Multiservice Access Router with VPN delivers the high-packet through-put required for IP Telephony, corporate connectivity, and Internet access. This performance-enhanced platform delivers wire-speed throughput, even with advanced services like QoS, NAT, Firewall and VPN-enabled.

Adtran NetVanta 3448 Multiservice Access Router with VPN – 10 x 10/100Base-TX LAN $880.8 The NetVanta 3448 Multiservice Access Router with VPN delivers the high-packet through-put required for IP Telephony, corporate connectivity, and Internet access. This performance-enhanced platform delivers wire-speed throughput, even with advanced services like QoS, NAT, Firewall and VPN-enabled.

Adtran NetVanta 3448 PoE Multiservice Access Router with VPN – 10 x 10/100Base-TX LAN $1214.4 The NetVanta 3448 PoE Multiservice Access Router with VPN delivers the high-packet through-put required for IP Telephony, corporate connectivity, and Internet access. This performance-enhanced platform delivers wire-speed throughput, even with advanced services like QoS, NAT, Firewall and VPN-enabled.

Adtran NetVanta 3450 Modular Access Router – 2 x NIM , 1 x CompactFlash (CF) Card – 2 x 10/100Base-TX LAN $1082 A NetVanta 3450 Modular Access Router that delivers the high-packet throughput required for IP Telephony, corporate connectivity, and Internet access. This performance-enhanced routing platform delivers wire-speed throughput, even with advanced services like QoS, NAT, and Firewall-enabled.