‘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.
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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:
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Mcafee Firewall
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Barracuda Firewall
Cyberoam
D-Link
Endian Firewall
Opendium Iceni
IPCop
pfSense
IPFire
Untangle
Zeroshell
SmoothWall
WinGate
Calyptix Security
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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
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
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
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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.
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 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 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 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 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 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 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
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
1438
4.5
Cisco
Cisco
802
4.4
Palo Alto Networks
Palo Alto Networks
790
4.5
Check Point Software Technologies
Check Point Software Technologies
701
Sophos
Sophos
169
SonicWall
SonicWall
120
4.4
Juniper Networks
Juniper Networks
107
4.4
WatchGuard
WatchGuard
85
4.3
Barracuda
Barracuda
78
4.6
Forcepoint
Forcepoint
78
4.6
Huawei
Huawei
34
4.5
Hillstone Networks
Hillstone Networks
30
4.6
Sangfor
Sangfor
23
4.7
Stormshield
Stormshield
20
4.6
AhnLab
AhnLab
12
4.7
F5
F5
8
4.6
Microsoft Azure Firewall
Microsoft Azure Firewall
8
4.6
New H3C Group
7
4.7
VMware Firewall
VMware Firewall
5
4.8
GreyHeller
3
5.0
Venustech
Venustech
2
4.5
Firewall Firm is a Best Firewall Provider Company in India
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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 MonteurFirewall 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
Sales Number : +91 95 8290 7788 | Support Number : +91 94 8585 7788
Sales Email : sales@itmonteur.net | Support Email : support@itmonteur.net
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