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‘Fake Stake’ attacks vulnerability found in 26 low-end cryptocurrencies

  • The flaws could enable attackers to take control over a currency’s entire blockchain transactions and conduct fraudulent operations.
  • The research team claims that the two issues were discovered in August 2018.

Two extremely dangerous security flaws have been discovered in 26 Proof-of-Stake (PoS) cryptocurrencies. The flaws dubbed as ‘Fake Stake’ attacks can allow an attacker to crash rival network nodes and gain remote access of the same up to 51 percent.

Side-effects of the flaws

The flaws were discovered by a group of four academics from the University of Illinois at Urbana-Champaign in the US. The researchers found that the flaws could enable attackers to take control over a currency’s entire blockchain transactions and conduct fraudulent operations.

PoS cryptocurrencies are particularly based on chain-based PoSv3 (Proof-of-Stake version 3). They draw the basic codes from Bitcoin’s codebase, with the PoS functionality grafted in them. However, some of these design codes are copied inappropriately, thus leading to new vulnerabilities.

“We call the vulnerabilities we found ‘Fake Stake’ attacks. Essentially, they work because PoSv3 implementations do not adequately validate network data before committing precious resources (disk and RAM). The consequence is that an attacker without much stake (in some cases none at all) can cause a victim node to crash by filling up its disk or RAM with bogus data. We believe that all currencies based on the UTXO and longest chain Proof-of-Stake model are vulnerable to these “Fake Stake” attacks,” the researchers wrote on Medium.

Impacted cryptocurrencies

The research team claims that the two issues were discovered in August 2018. Upon discovery, it started contacting the development teams of the affected cryptocurrencies in October.

However, some of the development teams could not be informed as their GitHub accounts appear to have become inactive. Demo code for reproducing the two vulnerabilities is available on GitHub.

The list of impacted cryptocurrencies includes the names of NavCOIN, Qtum, Emercoin, HTMLCOIN, ReddCoin, CloakCoin, BitBay, Linda, Phore, PotCoin and more.

Although some cryptocurrencies have deployed mitigations for the reported bugs, researchers believe that these mitigation processes are not fool-proof. Hence, they are looking out for better ways to address the problem.

Firewall Company in India

Firewall Company in India

Firewall Company in India

Firewall Company in India

Firewall is an essential part of your business security measures, invest in a firewall solution today

Protecting your network from intruders is as essential as locking up the front door. If the firewall architecture is poorly set up, or non-existent, it might have a significant impact on your business IT security. If an intruder penetrates your network it could lead to sensitive data being stolen, financial loss, or worse. Firewall Firm, is a Firewall Company in India,  Servicing in Delhi NCR India, we can provide support and help your business implement the following firewalls:

  • Check Point
  • FortiGate
  • Palo Alto Networks
  • WatchGuard
  • Sophos
  • Cisco Asa Firepower
  • Cisco PIX
  • Mcafee Firewall
  • Juniper SSG
  • Juniper SRX
  • Sonicwall
  • Barracuda Firewall
  • Cyberoam
  • D-Link
  • Endian Firewall
  • Opendium Iceni
  • IPCop
  • pfSense
  • IPFire
  • Untangle
  • Zeroshell
  • SmoothWall
  • WinGate
  • Calyptix Security
  • Halon Security
  • Vantronix
  • And more!

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With more than 20 years’ experience within the IT industry, Firewall Firm is a best Firewall Company in India is proud to be a reseller of all firewall solutions in Delhi NCR India. With our partnership, we supply and support all firewall products, as well as Wireless Access Points and Email Gateways. We truly believe that they are the best on the market.

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When any enterprise or small medium business start thinking of a network management & security, the first thing to come up in  the mind of IT Managers is a good and secure firewall. Firewalls are the first layer of defense in a network, as a system without the basic layer of security is intended to reveal the sensitive data for enterprise users.

A firewall is a combo of a firewall software and operating system that is built to run a firewall system on a dedicated hardware or virtual machine which includes :

Firewall Company in India

Firewall Company in India

  • Embedded firewalls: very limited-capability programs running on a low-power CPU system,
  • Software firewall appliances: a system that can be run in independent hardware or in a virtualised environment as a virtual appliance
  • Hardware firewall appliances: Hardware firewall is specifically built to install as a network device, providing enough network interfaces and CPU to serve a wide range of purposes. From protecting a small network to protecting an enterprise-level network.

Firewall Company in India

Firewall Company in India

Below is the list of Top Firewall Companies in India

 

Firewall License Cost OS
Check Point

Check Point

Proprietary Included on Check Point
security gateways
Proprietary operating system Check Point IPSO
and Gaia (Linux-based)
FortiGate

FortiGate

Proprietary Included on all Fortigate
devices
Proprietary, FortiOS
Palo Alto Networks

Palo Alto Networks

Proprietary Included on Palo Alto
Networks firewalls
Proprietary operating system PANOS
WatchGuard

WatchGuard

Proprietary Included on all
WatchGuard firewalls
Proprietary operating system
Sophos

Sophos

Proprietary Included on Sophos UTM Linux-based appliance
Cisco Asa Firepower

Cisco Asa Firepower

Proprietary Included on all CISCO
ASA devices
Proprietary operating system
Cisco PIX

Cisco PIX

Proprietary Included on all CISCO
PIX devices
Proprietary operating system
Forcepoint Mcafee Firewall

Forcepoint

Proprietary Included on Intel Security Appliance Linux-based appliance
Juniper SSG

Juniper SSG

Proprietary Included on Netscreen
security gateways
Proprietary operating system ScreenOS
Juniper SRX

Juniper SRX

Proprietary Included on SRX
security gateways
Proprietary operating system Junos
Sonicwall

Sonicwall

Proprietary Included on Dell appliance Proprietary operating system SonicOs
Barracuda Firewall

Barracuda Firewall

Proprietary Included Firewall Next Generation appliance Windows-based appliance
embedded firewall distribution
Cyberoam

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

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Free and Open Source Network UTM Firewalls

Free and Open Source Network UTM  Firewalls

Free and Open Source Network UTM  Linux Firewalls

Free and Open Source Network UTM  Linux Firewalls

 

pfSense

pfSense

pfSense

pfSense is an open source security solution with a custom kernel based on the FreeBSD OS. It is a software distribution that is customised especially to be used as a firewall and router. This open source firewall can be installed on bare metal hardware and be managed entirely through a Web interface. Apart from firewalling and routing platforms, you can expand its functionality by using its many features, without adding bloat and potential security vulnerabilities to the base distribution.

Features

  • Firewall – IP/port filtering, limiting connections, Layer 2 capable, scrubbing
  • State table – By default, all rules are stateful, and there are multiple configurations available for state handling
  • Server load balancing (LB) – Inbuilt LB to distribute load between multiple backend servers
  • NAT (network address translation) – Port forwarding, reflection
  • HA (high-availability) – Failover to secondary if primary fails
  • Multi-WAN (wide area network) – Uses more than one Internet connection
  • VPN (virtual private network) – Supports IPsec and OpenVPN
  • Reporting – Keeps historical resource utilisation information
  • Monitoring – Real-time monitoring
  • Dynamic DNS – Multiple DNS clients are included
  • DHCP and relay ready

Some examples:

  • Security – Stunner, Snort, Tinc, Nmap, arpwatch
  • Monitoring – iftop, ntopng, Softflowd, urlsnarf, darkstat, mailreport
  • Networking – NetIO, nut, Avahi
  • Routing – FRR, OLSRd, routed, OpenBGPD
  • Services – Iperf, widentd, syslog-ng, bind, Acme, Imspector, Git, DNS-server

ClearOS

ClearOS

ClearOS

ClearOS is a CentOS based open source firewall that transforms your standard PC into a committed firewall and Internet server/gateway. ClearOS has three editions: ClearOS Business, ClearOS Home and ClearOS Community. The community edition is free for a lifetime but for the other two, you need to purchase a subscription. It is one of the best open source firewalls for small to mid-sized businesses (SMBs). It is a complete network solution and you can extend the functionality by installing the apps such as the bandwidth manager, DHCP server, DMZ, DNS server and more.

Features

  • Firewall, networking and security
  • Provides several levels of security
  • Bandwidth QoS manager
  • DMZ, 1-to-1 NAT and port forwarding
  • At the protocol level, the peer-to-peer detection system lets you manage file sharing usage
  • Intrusion detection and intrusion prevention systems
  • Virtual private networking
  • Web proxy and content filtering

IPFire

IPFire

IPFire

IPFire is built on top of Netfilter and is an open source distribution. IPFire was designed with both modularity and a high level of flexibility in mind. It can be used as a firewall, proxy server or VPN gateway. The IDS (intrusion detection system) is inbuilt, so attacks are detected and prevented from Day One. And with the help of Guardian (an optional add-on), you can implement automatic prevention.

Features

  • Stateful packet inspection (SPI)
  • Proxy server with content filter and caching functionality
  • Intrusion detection system
  • VPN via IPsec and OpenVPN
  • DHCP server
  • Caching name server
  • Time server
  • Wake-on-LAN (WOL)
  • Dynamic DNS

OPNsense

OPNsense

OPNsense

OPNsense is an open source, easy-to-use and easy-to-build FreeBSD based firewall and routing platform. It includes most of the features available in expensive commercial firewalls, and more. OPNsense offers the rich feature set of commercial offerings with the benefits of open and verifiable sources.

Features

  • Traffic shaper
  • Captive portal
  • Forward caching proxy
  • Virtual private network
  • High availability and hardware failover
  • Intrusion detection and inline prevention
  • Built-in reporting and monitoring tools
  • Support for plugins
  • DNS server and DNS forwarder
  • DHCP server and relay

VyOS

VyOS

VyOS

VyOS is an open source network operating system based on Linux and includes multiple applications such as Quagga, ISC DHCPD, OpenVPN, StrongS/WAN and others, under a single management interface. It can be installed on any physical hardware, on a virtual machine or a cloud platform.

Features

  • VLANs
  • Static and dynamic routing
  • Firewall rulesets for IPv4 and IPv6 traffic
  • Tunnel interfaces
  • PPPoE, GRE, IPIP, SIT, static L2TPv3, VXLAN
  • VPN
  • NAT
  • DHCP and DHCPv6 server and relay
  • NetFlow and sFlow
  • Web proxy and URL filtering
  • QoS policies (drop tail, fair queue, and others), traffic redirection
  • VRRP, connection table synchronisation

 

Smoothwall

Smoothwall

Smoothwall

Smoothwall is a Linux distribution designed to be used as an open source firewall. It is configured via a Web based GUI and requires little or no knowledge of Linux to install and use it. Smoothwall Express supports LAN, DMZ, internal/external network firewalling, Web proxy for acceleration, traffic stats, etc. Shutting down or rebooting is possible directly through the Web interface.

Features

  • Supports LAN, DMZ and wireless networks
  • External connectivity via Static Ethernet, DHCP Ethernet, PPPoE, PPPoA using various USB and PCI DSL modems
  • Port forwards, DMZ pin-holes
  • Outbound filtering
  • Timed access
  • Simple to use Quality-of-Service (QoS)
  • Traffic stats, including per interface and per IP totals for weeks and months
  • IDS via automatically updated Snort rules
  • UPnP support
  • List of bad IP addresses to block

Untangle

Untangle

Untangle

Untangle NG Firewall takes the complexity out of network security—saving users’ time. This firewall is intended to balance performance and protection, policy and productivity. It’s an ideal fit for a range of organisations seeking a powerful, cost-effective network security solution that can handle any IT challenge — from small, remote offices to diverse school campuses and large, distributed organisations. The NG Firewall has different software modules that can be enabled or disabled as per individual requirements. These software modules are also called apps. They are both free and paid apps. So, for full functionality, you have to buy subscriptions for what you want.

Features

  • Virus blocker
  • Firewall
  • Web monitor
  • Spam Blocker Lite
  • Ad blocker
  • OpenVPN
  • Captive portal
  • Intrusion prevention
  • Phish blocker

 

Endian Firewall

Endian Firewall

Endian Firewall

Endian Firewall is a full-featured unified threat management solution, which uses the stateful packet inspection concept based firewall. It can be deployed as a proxy, gateway, and router with Open VPN.

Some of the features provided by the Endian Firewall are displayed in Figure 6.

  • Endian is a bi-directional firewall
  • It protects the network from Internet threats
  • By analysing the traffic flow, it prevents intrusion into the network
  • It has VPN with IPsec, which provides a secure and simple VPN tunnel through which many users can connect from a remote location
 Moonwall provide a firewall based on FreeBSD and a combination of other software utilities.

pfSense is a free open source firewall and router.

Shorewall firewall is a tool designed to configure Netfilter.

Smoothwall Express is an open source firewall based on a hardened GNU/Linux OS.

StillSecure deliver a software based firewall solution known as Cobia. Cobia can be installed on VMware as well. Cobia includes the ability to perform Routing, DHCP, DNS, Wireless, Firewall, VPN, Content Filtering, Reporting and more. Cobia can use modules provided by StillSecure or other third party organisations and developers. Cobia software comes as a public community license and a commercial use license. Via the StillSecure Community License, users can freely download and modify the source code.

Vyatta Core is an open source firewall offering IPv4 and IPv6 routing, intrusion prevention , stateful firewalling, IPSec and SSL OpenVPN and more.

Zeroshell is a Linux based firewall. The firewall has some good functionality such as the ability to load balance internet connections, integrate with LDAP, captive portal for web login authentication and more.

Zorp is an application layer firewall based on the Python scripting language.

Firewall Management Software Solutions Vendor List

AlgoSec deliver Firewall Analyzer which provides firewall policy auditing, policy cleanup, risk analysis, change monitoring and more. Algosec supports all the major firewall vendors. Algosec also offer AlgoSec FireFlow which is a change management solution.

Athena Security have a solution known as FirePAC that can clean up firewall policies, provide auditing and optimisation. Athena Security also offer a free tool called Firewall Browser which can help you find rules based on certain network criteria and supports Cisco, Checkpoint and Netscreen firewalls.

Secure Passage is a specialist in managing firewalls and offer a solution called Firemon. Firemon will give you visibility to unused rules and which rules are used and the frequency they are used. Firemon supports a large range of firewalls such as Cisco Checkpoint and others. Firemon also supports routers and load balancers. The solution will help you keep in control of your firewall policies, provide PCI DSS assistance, policy cleanup and provides other advantages as well.

 Skybox Security is a firewall management device that helps controlling firewall risks and provides visibility of network topology and firewall device configuration.
Tufin SecureTrak delivers firewall management, auditing and change control and automation.

For More details on Free and Open Source Network UTM Linux Firewalls, Please contact us on

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List of Firewall appliances Company in India

List of Firewall appliances Company in India

List of Firewall appliances Company in India

List of Firewall appliances Company in India

In general, a computer appliance is a computing device with a specific function and limited configuration ability, and a software appliance is a set of computer programs that might be combined with just enough operating system (JeOS) for it to run optimally on industry standard computer hardware or in a virtual machine.

A firewall appliance is a combination of a firewall software and an operating system that is purposely built to run a firewall system on a dedicated hardware or virtual machine. These include:

  • embedded firewalls: very limited-capability programs running on a low-power CPU system,
  • software-based firewall appliances: a system that can be run in independent hardware or in a virtualised environment as a virtual appliance
  • hardware-based firewall appliances: a firewall appliance that runs on a hardware specifically built to install as a network device, providing enough network interfaces and CPU to serve a wide range of purposes. From protecting a small network (a few network ports and few megabits per second throughput) to protecting an enterprise-level network (tens of network ports and gigabits per second throughput).

The following table Lists of TOP Firewall Companies in India, different Hardware / Software firewall appliances lists.

List of TOP Firewall Companies in India

 

 

Firewall Vendors

Reviews

Overall Rating

Fortinet

Fortinet

Fortinet

Cisco

Cisco

Cisco

Palo Alto Networks

Palo Alto Networks

Palo Alto Networks

Check Point Software Technologies

Check Point Software Technologies

Check Point Software Technologies

Sophos

Sophos

Sophos

SonicWall

SonicWall

SonicWall

4.4

Juniper Networks

Juniper Networks

Juniper Networks

WatchGuard

WatchGuard

WatchGuard

4.3

Barracuda

Barracuda

Barracuda

4.6

Forcepoint

Forcepoint

Forcepoint

4.6

Huawei

Huawei

Huawei

4.5

Hillstone Networks

Hillstone Networks

Hillstone Networks

4.6

Sangfor

Sangfor

Sangfor

4.7

Stormshield

Stormshield

Stormshield

4.6

AhnLab

AhnLab

AhnLab

12 4.7

F5

F5

F5

4.6

Microsoft Azure Firewall

Microsoft Azure Firewall

Microsoft Azure Firewall

4.6

New H3C Group

4.7

VMware Firewall

VMware Firewall

VMware Firewall

4.8

GreyHeller

3 5.0

Venustech

Venustech

Venustech

2 4.5

 

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Information Security - InfoSec - Cyber Security - Firewall Providers Company in India

 

What is Firewall? A Firewall is a network security device that monitors and filters incoming and outgoing network traffic based on an organization's previously established security policies. At its most basic, a firewall is essentially the barrier that sits between a private internal network and the public Internet.

 

Secure your network at the gateway against threats such as intrusions, Viruses, Spyware, Worms, Trojans, Adware, Keyloggers, Malicious Mobile Code (MMC), and other dangerous applications for total protection in a convenient, affordable subscription-based service. Modern threats like web-based malware attacks, targeted attacks, application-layer attacks, and more have had a significantly negative effect on the threat landscape. In fact, more than 80% of all new malware and intrusion attempts are exploiting weaknesses in applications, as opposed to weaknesses in networking components and services. Stateful firewalls with simple packet filtering capabilities were efficient blocking unwanted applications as most applications met the port-protocol expectations. Administrators could promptly prevent an unsafe application from being accessed by users by blocking the associated ports and protocols.

 

Firewall Firm is an IT Monteur Firewall Company provides Managed Firewall Support, Firewall providers , Firewall Security Service Provider, Network Security Services, Firewall Solutions India , New Delhi - India's capital territory , Mumbai - Bombay , Kolkata - Calcutta , Chennai - Madras , Bangaluru - Bangalore , Bhubaneswar, Ahmedabad, Hyderabad, Pune, Surat, Jaipur, Firewall Service Providers in India

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