Firewall Information

Firewall Overview

What is firewall and why it is used?

 >A firewall is a security device — computer hardware or software — that can help protect your network by filtering traffic and blocking outsiders from gaining unauthorized access to the private data on your computer. ... They key is determining how much protection you need.

 

 

 

 

 

 

 

Firewalls are filters that stand between a computer or computer network and the Internet. Each firewall can be programmed to keep specific traffic in or out. All messages passing through the firewall are examined and those not meeting pre-defined security criteria are blocked.

For example, on the outbound side, firewalls can be configured to prevent employees from transmitting sensitive data outside the network, while on the inbound side, firewalls can be configured to prevent access to certain kinds of websites like social media sites.

Firewall Features & Capabilities

• Application visibility and control
• Identify and control evasive app threats
• Intrusion Prevention integration
• Physical and virtual environment support
• Integration with LDAP and Active Directory
• “Sandbox,” or isolated, cloud-based threat emulation

Firewall Firm, a Top Firewall Provider Companies in India, Firewall vendors are beginning to bundle firewall offerings with other security or privacy features, although this is not a universal practice. The most common example is support for Virtual Private Networks (VPN), and load-management is often featured as well.

Firewall methods

Firewalls use several methods to control traffic flowing in and out of a network:

• Packet filtering: This method analyzes small pieces of data against a set of filters. Those that meet the filter criteria are allowed to pass through, while others are discarded.

• Proxy service: In this method, computers make a connection to the proxy which then initiates a new network connection based on the content of the request. In this way, there is no direct connection or packet transfer on either side of the firewall. Network addresses are effectively hidden.

• Stateful inspection: Stateful inspection is the new standard firewall security method that monitors communications packets over a period of time. Outgoing packets that request specific types of incoming packets are tracked. Only incoming packets that are an appropriate response are allowed to pass. Firewalls using this method are often referred to as next-generation firewalls (NGFW).

Pricing Information

The cost of firewalls can vary from free (for personal use) to significant sums of money for enterprise firewalls. Firewalls are often on-premise appliances, but can also be purchased as software which must be installed on a server, or as a cloud service. The range of pricing models is broad making it difficult to compare across vendors. However, an enterprise firewall may cost upwards of $30,000, depending on capability and type.

Firewall

                   

What are the 3 types of firewalls?
There are three basic types of firewalls that are used by companies to protect their data & devices to keep destructive elements out of network, viz. Packet Filters, Stateful Inspection and Proxy Server Firewalls. Let us give you a brief introduction about each of these


What is firewall in simple words?
A firewall is a network security device that monitors incoming and outgoing network traffic and permits or blocks data packets based on a set of security rules.

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What is the role of firewall?
Its purpose is to control what traffic is allowed to traverse from one side to the other. As the most basic level, firewalls can block traffic intended for particular IP addresses or server ports.
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Is firewall needed?
Yes, you do need a firewall. The good news is, you are probably already protected. ... If your computer connects to the internet using a router, you already have a firewall built in to your security, because the router acts as a hardware firewall. In my opinion, that's all that most people need.

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Who invented firewall?
Nir Zuk says he developed the technology used in all firewalls today. David Pensak claims to have built the first commercially successful firewall. Marcus Ranum says his own reputation as inventor of the firewall is "marketing BS," and that David Presotto is the man. (See Ranum's Wild Security Ride.)

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What are the two main types of firewall?
Here are eight types of firewalls:
Packet-filtering firewalls.
Circuit-level gateways.
Stateful inspection firewalls.
Application-level gateways (a.k.a. proxy firewalls)
Next-gen firewalls.
Software firewalls.
Hardware firewalls.
Cloud firewalls.

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What is Firewall Software?
Firewalls are barriers used to secure networks from hackers, malware, and other attackers. Firewalls come in both hardware and software form, but all types provide fortified security between networks and outside threats. IT managers configure firewalls to specific system requirements, ensuring no data is vulnerable. Once implemented, they will monitor firewall tools to ensure security.

Smaller companies and personal computers will rarely require hardware firewalls, but large enterprise companies will use hardware firewalls within their own systems to limit access outside the company or between departments. Firewall products will have significant overlap with network security software and web security software products, as they all aim to secure systems and information. Some products may come equipped with vulnerability management software tools to detect and defeat threats.

To qualify for inclusion in the Firewall category, a product must:

Assess and filter user access
Create barriers between networks and the internet
Alert administrators when unauthorized access is attempted
Outline and enforce security and authentication rules
Automate tasks associated with testing or monitoring 

 

Below is the list of Top Firewall Companies in India

 

Firewall	License	Cost	OS
Check Point	Proprietary	Included on Check Point security gateways	Proprietary operating system Check Point IPSO and Gaia (Linux-based)
FortiGate	Proprietary	Included on all Fortigate devices	Proprietary, FortiOS
Palo Alto Networks	Proprietary	Included on Palo Alto Networks firewalls	Proprietary operating system PANOS
WatchGuard	Proprietary	Included on all WatchGuard firewalls	Proprietary operating system
Sophos	Proprietary	Included on Sophos UTM	Linux-based appliance
Cisco Asa Firepower	Proprietary	Included on all CISCO ASA devices	Proprietary operating system
Cisco PIX	Proprietary	Included on all CISCO PIX devices	Proprietary operating system
Forcepoint	Proprietary	Included on Intel Security Appliance	Linux-based appliance
Juniper SSG	Proprietary	Included on Netscreen security gateways	Proprietary operating system ScreenOS
Juniper SRX	Proprietary	Included on SRX security gateways	Proprietary operating system Junos
Sonicwall	Proprietary	Included on Dell appliance	Proprietary operating system SonicOs
Barracuda Firewall	Proprietary	Included Firewall Next Generation appliance	Windows-based appliance embedded firewall distribution
Cyberoam	Proprietary	Included Firewall Sophos appliance	Windows-based appliance embedded firewall distribution
D-Link	Proprietary	Included Firewall DFL	Windows-based appliance embedded firewall distribution
Endian Firewall	Proprietary	Free / Paid	Linux-based appliance
Opendium Iceni	Proprietary	Free / Paid	Linux-based, with optional web filtering / auditing.
IPCop	GPL	Free / Paid	Linux-based appliance firewall distribution
pfSense	ESF/BSD	Free / Paid	FreeBSD-based appliance firewall distribution
IPFire	GPL	Free / Paid	Linux/NanoBSD-based appliance firewall distribution
Untangle	GPL	Free / Paid	Linux/NanoBSD-based appliance firewall distribution
Zeroshell	GPL	Free / Paid	Linux/NanoBSD-based appliance firewall distribution
SmoothWall	GPL	Free / Paid	Linux-based appliance embedded firewall distribution
WinGate	GPL	Free / Paid	Windows-based appliance embedded firewall distribution
Calyptix Security	BSD	Free	OpenBSD-based appliance firewall distribution
Halon Security	BSD	Free	OpenBSD-based appliance
Vantronix	BSD	Free	OpenBSD-based appliance

List of TOP Web Application Firewall (WAF) Companies in India

The web application firewall (WAF) market is being driven by customers’ needs to protect public and internal web applications. WAFs protect web applications and APIs against a variety of attacks, including automated attacks (bots), injection attacks and application-layer denial of service (DoS). They should provide signature-based protection, and should also support positive security models (automated whitelisting) and/or anomaly detection. WAFs are deployed in front of web servers to protect web applications against external and internal attacks, to monitor and control access to web applications, and to collect access logs for compliance/auditing and analytics. WAFs exist in the form of physical or virtual appliances, and, increasingly, are delivered from the cloud, as a service (cloud WAF service).

WAF Firewall Vender	Reviews	Overall Rating
Sucuri Sucuri Website Firewall (WAF)	241	4.6
Imperva Imperva Incapsula WAF	145	4.5
F5	102	4.5
Fortinet FortiWeb Web Application Firewall	101	4.4
Signal Sciences	95	5.0
Citrix	94	4.3
Cloudflare	93	4.5
Akamai	78	4.5
Amazon Web Services (AWS)	58	4.4
Barracuda	45	4.4
Rohde & Schwarz Cybersecurity (DenyAll)	38	4.7
Radware	30	4.6
Ergon Informatik	19	4.6
United Security Providers	12	4.7
Positive Technologies	11	4.6
Instart	10	4.9
Venustech	10	4.5
Chaitin Tech	9	4.8
Oracle	9	4.4
NSFOCUS	6	4.5
Microsoft	6	3.7
Trustwave	6	3.5
Penta Security	5	5.0
Symantec	5	4.4
Alert Logic	5	3.6
DBAPPSecurity	4	4.5
NGINX	4	4.3
Qualys	4	4.0
Grey Wizard	3	5.0
A10 Networks	3	4.7
Google	3	4.7
Kemp	3	4.3
SiteLock	3	4.3
Qihoo 360	3	4.0
Piolink	2	4.5
Wallarm	2	4.5
Alibaba Cloud	2	4.0
Templarbit	1	5.0
Threat X	1	5.0
AdNovum	1	4.0
Verizon	1	4.0
Bluedon Information Security Technologies	1	3.0