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A firewall is a security device that sits between a private network or endpoint and a public network. Its purpose is to block unauthorized access while permitting authorized communications. Firewalls can be implemented through hardware or software, or a combination of the two. All messages entering or leaving the protected private network pass through the firewall, which examines each message against a set of rules and other criteria; blocking those that do not meet the specified criteria.

Articles Tagged - firewall

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Sourcefire to ship its first next-gen firewalls
Monday, December 05, 2011
Sourcefire to ship its first next-gen firewalls
Company's new products will recognize 1,000 applications, it says, as it extends its product line beyond network intrusion detection
Check Point has sights set on 1Tbps firewall
Tuesday, August 02, 2011
Check Point has sights set on 1Tbps firewall
Fourteen-slot chassis now offers 200 Gbps firewall throughput, and will expand to 400 Gbps next year with new blades. Eventually it will hit more than twice that, the company says
New top-of-line firewall from Palo Alto Networks
Wednesday, March 09, 2011
New top-of-line firewall from Palo Alto Networks
The latest gateway is the company's fastest. But just as important, it now offers a laptop agent allowing managers to extend access policies to endpoints
New UTM appliance from Fortinet
Friday, February 18, 2011
New UTM appliance from Fortinet
Latest unit has up to 58 Gpbs of firewall performance and up to 22 Gpbs of VPN throughput. Fortinet also updated its FortiOS operating system
What security technology will be hot at RSA 2011?
Thursday, February 03, 2011
What security technology will be hot at RSA 2011?
Encryption, cloud and mobile security to take centre stage at RSA’s 20th anniversary conference
Crossing the chasm to a next-generation firewall
Monday, January 03, 2011
Crossing the chasm to a next-generation firewall
They are fast, intelligent firewalls and application-aware with VPN capabilities and can integrate with Active Directory for identity and policy management, so a new vocabulary is needed.
Is a next-generation firewall in your future?
Monday, December 13, 2010
Is a next-generation firewall in your future?
They have the muscle to perform intrusion prevention and the ability to enforce policies based on allowed identity-based application usage. Read why these consolidated security devices are expected to be increasingly important
Study: Oracle users have big private cloud plans
Monday, November 29, 2010
Study: Oracle users have big private cloud plans
Nearly half of respondents are either running, planning or considering some type of private cloud. But many deployments remain nascent, according to the IOUG study
Cisco adds more software, hardware capabilities
Tuesday, October 05, 2010
Cisco adds more software, hardware capabilities
Faster routers, switches and firewalls as well as more Express options and modules were revealed to meet increased virtualization and mobility demands
Security-as-a-service is growing
Wednesday, September 01, 2010
Security-as-a-service is growing
IT managers may think they do not use software as a service or cloud computing when in fact they outsource their e-mail, anti-spam and anti-virus services. Find out why messaging security is suited for the cloud and why intrusion prevention and firewall functions should happen outside the gateway
REVIEW: ZoneAlarm Security Suite 2010
Friday, July 30, 2010
REVIEW: ZoneAlarm Security Suite 2010
Security Suite 2010, which Checkpoint Software Technologies Inc. provides under the ZoneAlarm brand, is good for advanced users and the Auto learn mode handles unknown programs. It is easy to install
REVIEW: Trend Micro Internet Security Pro
Friday, July 30, 2010
REVIEW: Trend Micro Internet Security Pro
Trend Micro Inc. tries to keep things simple with Internet Security Pro, and the memory usage and CPU utilization is low. Find out about the Wi-Fi Advisor.
REVIEW: Panda Internet Security 2010
Friday, July 30, 2010
REVIEW: Panda Internet Security 2010
Panda Security SL's Internet security software costs a little more than its competitors but is simple to set up. Find out about the firewall and anti-spam features
REVIEW: Norman Security Suite
Friday, July 30, 2010
REVIEW: Norman Security Suite
Norman ASA’s digital sandbox is good but requires more user interaction than products from competing vendors. The anti-spam tool is easy to set up and configure
REVIEW: McAfee Internet Security 2010
Friday, July 30, 2010
REVIEW: McAfee Internet Security 2010
McAfee Inc. covers the basics well but charges extra for technical support. The user interface is good but setting up firewall rules manually is complicated.
REVIEW: Kaspersky Internet Security 2010
Friday, July 30, 2010
REVIEW: Kaspersky Internet Security 2010
Kaspersky Labs makes it easy to define simple firewall policies and with BitDefender, it has eliminated most of the techno babble
REVIEW: BitDefender Internet Security 2010
Friday, July 30, 2010
REVIEW: BitDefender Internet Security 2010
It comes with all the bells and whistles and most functions are easy to find.
Black Hat too commercial for you?
Tuesday, July 27, 2010
Black Hat too commercial for you?
As network security experts converge on Las Vegas to attend the Black Hat and DefCon conference, some experts are opting for a smaller event, known as Security B-Sides, which one executive with Astaro GmbH says has more of a frat house feel and whose priority is not lead generation for vendors
Fortinet boots branch UTM firewall up to 1 Gbps
Tuesday, July 13, 2010
Fortinet boots branch UTM firewall up to 1 Gbps
By combining a new ASIC with CPU, performance leaps 10 times from the previous model. An industry analyst says branch offices rather than SMBs will be the beneficiaries
Kerio firewall moves into unified threat management
Sunday, June 06, 2010
Kerio firewall moves into unified threat management
The venerable WinRoute Firewall is now named Kerio Control after gaining intrusion protection. It also adds a new anti-virus engine from Sophos.
Oracle buys Secerno to get database firewall
Friday, May 21, 2010
Oracle buys Secerno to get database firewall
U.K. database security startup is Oracle’s latest acquisition. How the technology will benefit Oracle
New Fortinet enterprise firewalls reach 120Gbps
Monday, May 17, 2010
New Fortinet enterprise firewalls reach 120Gbps
Organizations can upgrade when they need to get increased performance, says the company. The rack-mounted appliances offer significantly increased speed over Fortinet's previous top-of-the-line enterprise series
University of Manitoba installs Juniper switches
Friday, January 22, 2010
University of Manitoba installs Juniper switches
The JunOS software, virtual chassis and 10-Gig capacity were all factors in selecting Juniper Networks Inc.’s EX4200 series switches. The hardware cost much less than what Cisco Systems Inc. was proposing
Zeus, Koobface, Conficker: How to put up a fight
Friday, December 11, 2009
Zeus, Koobface, Conficker: How to put up a fight
Cybercriminals may be innovative and audacious, but enterprises don’t need to be fancy to fight them. Cisco, Info-Tech and Microsoft weigh in on battling the top security threats of 2009
Firewall upgrade tames nasty Flash games
Wednesday, November 04, 2009
Firewall upgrade tames nasty Flash games
No need to ban outright, says SmoothWall
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