Category Archives: What is a firewall

Best business firewalls: Which firewall is suitable for your business?

Best business firewalls: Which firewall is suitable for your business?

There are countless options to choose from when considering firewall protection. Should you invest in an external firewall, stick with a virtual firewall or take the plunge with both?

The firewalls listed here cater to most sizes of organisation, from small businesses that only require virtual firewalls to larger enterprises that should house external firewall hardware.

With recent data breaches highlighting the importance of securing your network, IT Monteur Firewall Firm investigates the best firewalls on the market for every business’ first line of defence.

Firewalls – Buyer’s Guide and Reviews – March 2018

A10 Networks
A10 Networks Thunder CFW
Barracuda Networks
Barracuda Networks NG Firewall
Check Point
Check Point Power-1
Check Point
Check Point UTM-1
Check Point
Check Point VPN-1
Check Point
Check Point VSX
Cisco
Cisco Sourcefire Firewalls
Cisco
Cisco ASA
Cisco
Meraki MX Firewalls
Cisco
Cisco Firepower NGFW
Cisco
Cisco ASAv
Fortinet
Fortinet FortiGate
Fortinet
FortiGate-VM
GFI
Kerio Control
Hewlett Packard
Enterprise
3Com H3C Firewall
Hillstone Networks
Hillstone E-Series
Hillstone Networks
Hillstone T-Series
Hillstone Networks
Hillstone X-Series Data Center Firewalls
Hillstone Networks
Hillstone CloudEdge
Intel Security
Intel Security StoneGate
Intel Security
Intel Security Firewall Enterprise MFE
Juniper
Juniper SRX
NetFortris
NetFortris Hosted Firewall
NetFortris
NetFortris Threat Analyzer
OPNsense
OPNsense
Palo Alto Networks
Palo Alto Networks WildFire
Palo Alto Networks
Palo Alto Networks VM-Series
pfSense
pfSense
SonicWall
SonicWall TZ
SonicWall
SonicWall NSA
Sophos
Sophos Cyberoam UTM
Sophos
Sophos UTM
Sophos
Sophos XG
Stormshield
Stormshield Network Security
Trustwave
Trustwave Firewalls
Untangle
Untangle NG Firewall
WatchGuard
WatchGuard XTM
WatchGuard
WatchGuard Firebox
Zscaler
Zscaler Web Security

Top Firewalls Solutions

1 Fortinet FortiGate
The FortiGate family of NG firewalls provides proven protection with unmatched performance across the network, from internal
segments, to data centers, to cloud environments. FortiGates are available in a large range of sizes and form factors and are key
components of the Fortinet Security Fabric, which enables immediate, intelligent defense against known and new threats
throughout the entire network
2 Cisco ASA
Adaptive Security Appliance (ASA) is Cisco’s end-to-end software solution and core operating system that powers the Cisco ASA
product series. This software solution provides enterprise-level firewall capabilities for all types of ASA products, including blades,
standalone appliances and virtual devices. Adaptive Security Appliance provides protection to organizations of all sizes, and
allows end-users to access information securely anywhere, at any time, and through any device.Adaptive Security Appliance is
also fully compatible with other key security technologies, and so provides organizations with an all-encompassing security
solution.
3 Sophos UTM
The global network of highly skilled researchers and analysts, protecting businesses from known and emerging malware – viruses,
rootkits and spyware.
4 pfSense
Providing comprehensive network security solutions for the enterprise, large business and SOHO, pfSense solutions bring
together the most advanced technology available to make protecting your network easier than ever before. Our products are built
on the most reliable platforms and are engineered to provide the highest levels of performance, stability and confidence.
5 Palo Alto Networks WildFire
WildFire™ cloud-based threat analysis service is the industry’s most advanced analysis and prevention engine for highly evasive
zero-day exploits and malware. The cloud-based service employs a unique multi-technique approach combining dynamic and
static analysis, innovative machine learning techniques, and a groundbreaking bare metal analysis environment to detect and
prevent even the most evasive threats.
6 Sophos Cyberoam UTM
Cyberoam Unified Threat Management hardware appliances offer comprehensive security to organizations, ranging from large
enterprises to small and branch offices. Multiple security features integrated over a single, Layer 8 Identity-based platform make
security simple, yet highly effective.
7 SonicWall TZ
The secure, sophisticated SonicWALL TZ is widely deployed at small businesses, retail, government, remote sites and branch
offices. It combines high-performance intrusion prevention, malware blocking, content/URL filtering and application control.
8 Meraki MX Firewalls
With the proliferation of modern applications and mixed-use networks, host and port based security is no longer sufficient. Cisco
Meraki’s layer 7 “next generation” firewall, included in MX security appliances and every wireless AP, gives administrators
complete control over the users, content, and applications on their network.
9 WatchGuard XTM
Small businesses need big security, too, and the WatchGuard XTM Series firewall/VPN appliances deliver that strong protection Ð
but without the hefty price tag. Enterprise-grade security includes full HTTPS content inspection, VoIP support, and optional
security subscriptions like Application Control and Intrusion Prevention Service.
10 Juniper SRX
High-performance security with advanced, integrated threat intelligence, delivered on the industry’s most scalable and resilient
platform. SRX Series gateways set new benchmarks with 100GbE interfaces and feature Express Path technology, which enables
up to 1 Tbps performance for the data center.

For more details just call or email us on
Phone:+91 120 649 8887
Email: sales@itmonteur.net

Gajshield DLP Firewall

GAJSHIELD Next Generation Firewall Unique Context Sensitive Network based Data Leak Prevention System with Cloud Security

GAJSHIELD Next Generation DLP Firewall
Unique Context Sensitive Network based Data Leak Prevention System with Cloud Security

GAJSHIELD DLP Firewall

Next Generation DLP Firewall

Unique Context Sensitive Network based Data Leak Prevention System with Cloud Security

GajShield’s layered security platforms are designed to provide in depth protection against various attacks by tightly integrating key security functions and to securely connect remote offices and partners. GajShield Network Security Appliances combines ICSA Certified Firewall, IPS, VPN, URL Filtering, Virus screening and Bandwidth Management in a single appliance to provide in depth protection at the network edge.

ICSA Certified

  • User Sense UTM – Policy combination of User, Source, IP
  • address and Service
  • Policy based control for Firewall, IPS, URL Filtering,
  • Anti-virus, Anti-spam, DLP and Bandwidth Management
  • Access Scheduling
  • Policy based Source & Destination NAT
  • H.323 NAT Traversal, 802.1q VLAN Support
  • DoS, DDoS, Syn Flood Attack prevention

For SOHO specification

GS 15nu GS20nu
Firewall
– Concurrent Sessions 190000 3300000
– New Sessions/Second 5100 28000
– Firewall Throughput 230 Mbps 3.2 Gbps
– VPN Throughput 100 Mbps 325 Mbps
– UTM Throughput 170 Mbps 280 Mbps
– Antivirus Throughput 140 Mbps 450 Mbps
– IPS Throughput 160 Mbps 720 Mbps
– VPN Tunnels 25 550
– Configurable WAN / DMZ / LAN ports Yes Yes
– 10/100 Interfaces 4 4
– 10/100/1000 Interface

For SME

GS 80nu

GajShield ‘GS 40dc’ provides content aware data context, which helps you to secure your enterprise beyond next generation firewalls. The GajShield 40dc appliance is targeted at high speed Internet security device for SOHO/SMB. The 40dc appliance manages gigabit traffic with content aware data context platform providing enterprise grade security even to the smallest enterprise.

GS 40d c FEATURES SPEC IF ICAT IONS
10/100
10/100/1000 4
Concurrent Sessions 320000
New Sessions Per Second 8000
Firewall Throughput 2.5 Gbps
VPN Throughput 400 Mbps
UTM Throughput 350 Mbps
AntiVirus Throughput 425 Mbps
IPS Throughput 475 Mbps
VPN Tunnels 150
Configurable WAN/LAN/DMZ ports cx Yes

For Enterprise

GS 130d c FEATURES GajShield 260d Features GS 320dc-f  Features GajShield 330d Features GajShield 930d Features GajShield 1030d Features
10/100 6 10 20/16 20/16
10/100/1000 8 2 4 4/8 4/8
Concurrent Sessions 850000 850000 900000 1100000 3000000
New Sessions Per Second 26000 26000 30000 60000 150000
Firewall Throughput 5.5 Gbps 5.5 Gbps 7 Gbps 20 Gbps 25 Gbps
VPN Throughput 1.9 Gbps 1.9 Gbps 2.5 Gbps 12 Gbps 15 Gbps
UTM Throughput 1 Gbps 1 Gbps 2100 Mbps 3.5 Gbps 5 Gbps
AntiVirus Throughput 1200 Mbps 1200 Mbps 2200 Mbps 5.7 Gbps 7.2 Gbps
IPS Throughput 1500 Mbps 1500 Mbps 2400 Mbps 9.5 Gbps 11.5 Gbps
VPN Tunnels 4000 4000 6000 20000 25000
Configurable WAN/LAN/DMZ ports yes Yes Yes Yes Yes

Gajshield Firewall Price

Gajshield DLP Firewall Price

For more details just call or email us on
Phone:+91 120 649 8887
Email: sales@itmonteur.net

Firewall

What is a Firewall

A firewall is a network security system, either hardware- or software-based, that uses rules to control incoming and outgoing network traffic.

A firewall acts as a barrier between a trusted network and and an untrusted network. A firewall controls access to the resources of a network through a positive control model. This means that the only traffic allowed onto the network is defined in the firewall policy; all other traffic is denied.

History and types of firewalls

Computer security borrowed the term firewall from firefighting and fire prevention, where a firewall is a barrier established to prevent the spread of fire.

When organizations began moving from mainframe computers and dumb clients to the client-server model, the ability to control access to the server became a priority. Before firewalls emerged in the late 1980s, the only real form of network security was performed by access control lists (ACLs) residing on routers. ACLs determined which IP addresses were granted or denied access to the network.

The growth of the Internet and the resulting increased connectivity of networks meant that this type of filtering was no longer enough to keep out malicious traffic as only basic information about network traffic is contained in the packet headers. Digital Equipment Corp. shipped the first commercial firewall (DEC SEAL in 1992) and firewall technology has since evolved to combat the increasing sophistication of cyberattacks.

Packet firewalls

The earliest firewalls functioned as packet filters, inspecting the packets that are transferred between computers on the Internet. When a packet passes through a packet-filter firewall, its source and destination address, protocol, and destination port number are checked against the firewall’s rule set. Any packets that aren’t specifically allowed onto the network are dropped (i.e., not forwarded to their destination). For example, if a firewall is configured with a rule to block Telnet access, then the firewall will drop packets destined for TCP port number 23, the port where a Telnet server application would be listening.

Packet-filter firewalls work mainly on the first three layers of the OSI reference model (physical, data-link and network), although the transport layer is used to obtain the source and destination port numbers. While generally fast and efficient, they have no ability to tell whether a packet is part of an existing stream of traffic. Because they treat each packet in isolation, this makes them vulnerable to spoofing attacks and also limits their ability to make more complex decisions based on what stage communications between hosts are at.

Stateful firewalls

In order to recognize a packet’s connection state, a firewall needs to record all connections passing through it to ensure it has enough information to assess whether a packet is the start of a new connection, a part of an existing connection, or not part of any connection. This is what’s called “stateful packet inspection.” Stateful inspection was first introduced in 1994 by Check Point Software in its FireWall-1 software firewall, and by the late 1990s, it was a common firewall product feature.

This additional information can be used to grant or reject access based on the packet’s history in the state table, and to speed up packet processing; that way, packets that are part of an existing connection based on the firewall’s state table can be allowed through without further analysis. If a packet does not match an existing connection, it’s evaluated according to the rule set for new connections.

Application-layer firewalls

As attacks against Web servers became more common, so too did the need for a firewall that could protect servers and the applications running on them, not merely the network resources behind them. Application-layer firewall technology first emerged in 1999, enabling firewalls to inspect and filter packets on any OSI layer up to the application layer.

The key benefit of application-layer filtering is the ability to block specific content, such as known malware or certain websites, and recognize when certain applications and protocols — such as HTTP, FTP and DNS — are being misused.

Firewall technology is now incorporated into a variety of devices; many routers that pass data between networks contain firewall components and most home computer operating systems include software-based firewalls. Many hardware-based firewalls also provide additional functionality like basic routing to the internal network they protect.

Proxy firewalls

Firewall proxy servers also operate at the firewall’s application layer, acting as an intermediary for requests from one network to another for a specific network application. A proxy firewall prevents direct connections between either sides of the firewall; both sides are forced to conduct the session through the proxy, which can block or allow traffic based on its rule set. A proxy service must be run for each type of Internet application the firewall will support, such as an HTTP proxy for Web services.

Firewalls in the perimeterless age

The role of a firewall is to prevent malicious traffic reaching the resources that it is protecting. Some security experts feel this is an outdated approach to keeping information and the resources it resides on safe. They argue that while firewalls still have a role to play, modern networks have so many entry points and different types of users that stronger access control and security at the host is a better technological approach to network security.

Virtualization strategies such as virtual desktop infrastructure can dynamically respond to different scenarios by offering tailored access control to applications, files, Web content and email attachments based on the user’s role, location, device and connection. This approach to security does provide additional protection that a firewall can’t, but information security requires defense-in-depth, and firewalls still offer essential low-level protection as well as important logging and auditing functions.

 

What is a firewall?

What is a firewall?

A firewall is a software program or piece of hardware that helps screen out hackers, viruses, and worms that try to reach your computer over the Internet. If you can’t start Windows Firewall or you are getting an error, use Microsoft free tool to diagnose and fix problems.

firewall

firewall

  • If you use a computer at home, the most effective and important first step you can take to help protect your computer is to turn on a firewall.
  • Windows 8, Windows 7, Windows Vista, and Windows XP SP2 or higher have a firewall built-in and turned on by default. (Note: Support for Windows XP ended in April 2014.)
  • If you have more than one computer connected in the home, or if you have a small-office network, it is important to protect every computer. You should have a hardware firewall (such as a router) to protect your network, but you should also use a software firewall on each computer to help prevent the spread of a virus in your network if one of the computers becomes infected.
  • If your computer is part of a business, school, or other organizational network, you should follow the policy established by the network administrator.

Automatically diagnose and fix problems with Windows Firewall

Follow these steps to automatically repair Windows Firewall problems:
 
    • Select the Download button on this page.
    • In the File Download dialog box, click Run or Open, and then follow the steps in the Windows Firewall Troubleshooter.
Notes
  • This troubleshooter might be in English only. However, the automatic fix also works for versions of Windows in other languages.
  • If you’re not on the computer that has the problem, save the troubleshooter to a flash drive or a CD, and then run it on the computer that has the problem.
Download
What it fixes
    • Windows Firewall isn’t the default firewall
    • Windows Firewall doesn’t start
    • Windows couldn’t start Windows Firewall (Service-specific error 5 (0x5))
    • Remote Assistance isn’t working because it’s blocked by Windows Firewall
    • You’re unable to access shared files and printers because sharing is blocked by Windows Firewall
    • BFE service is missing
    • Firewall won’t start (Error Code 80070424)
Runs on
    • Windows 7
    • Windows 8
    • Windows 8.1
    • Windows 10