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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





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