Multicast Traffic – Ethernet

Most industrial producer-consumer (or publisher-subscriber) protocols operating over Ethernet, such as EtherNet/IP and Foundation Fieldbus HSE, are IP multicast-based. The first advantage of IP multicasting is network efficiency; by not repeating the data transmission to the multiple destinations, a significant reduction in network load can occur. The second advantage is that the sending host need not be concerned with knowing every IP address of every destination host listening for the [..]

Is it a good have 2 firewalls running simultaneously ?

We recommend that you run only one antivirus and one firewall at a time. Having more than one antivirus or firewall active in memory uses additional resources and can result in software conflicts, network and software access problems and false virus alerts. Your best defense against computer viruses and malicious programs is to keep your antivirus virus definitions up to date and update your antivirus and firewall to lasts [..]

Distributed Firewalling

Distributed firewalling is an emerging security technology in firewall deployment that moves security from the perimeter to device endpoints. This is accomplished by placing a firewall in or directly in front of every endpoint and other appropriate devices in the network. The theory of distributed firewalling is that this can ease the burden on the perimeter and internal firewalls, which have traditionally been major chokepoints for network access. As distributed [..]

Firewalls Testing

New firewalls should be tested and evaluated before deployment to ensure that they are working properly. Testing should be completed on a test network without connectivity to the production network. This test network should attempt to replicate the production network as faithfully as possible, including the network topology and network traffic that would travel through the firewall. Aspects of the solution to evaluate include the following:

• Connectivity. Users can establish and [..]

Extranet VPN

Almost every company has a select group of suppliers, vendors and other business partners they do business with. Business interactions between these organisations include communication, collaboration and, in many cases, commercial transactions.

In today’s rapidly changing and highly competitive global economy, speed and cost can determine a company’s success or failure. As the traditional business exchange methods often prove to be slow, paper-based, timeintensive, and expensive, companies are looking to improve [..]

Intranet VPN

Many VPNs, of different companies, can be created on the same shared IP backbone infrastructure of a Service Provider. This is one of the reasons why VPNs are far less expensive for companiesthan full private networks based on a WAN infrastructure.

A complete VPN solution therefore incorporates encrypted tunneling, QoS,security, management, and provisioning capabilities, to create a reliable [..]

Firewall – VPN Environments

Firewall environments are made up of firewall devices and associated systems and applications designed to work together. For example, one site may use a firewall environment composed of a boundary router, a main firewall, and intrusion detection systems connected to the protected network and the network between the router and main firewall.

The latest trend in firewall offerings is to add cryptographic services for firewall to firewall encryption. The encrypted traffic[..]

Why to choose a Firewall – VPN (Virtual PrivateNetwork) Solution ?

In today’s world, more and more businesses are seeking to gain efficiencies in their resources.
Forced to do more work with fewer people, organizations are looking for ways to improve the
manageability and scalability of their networks without increasing their costs.

With the growing concerns over network security, Denial of Service attacks, virus damage, and privacy your network demands a firewall – vpn solution that provides the assurance of a dedicated network security[..]

Scan computer in safe mode ?

Some people scan their computer in safe mode because less services are loaded and so greater chance of files not being in use, and better chance of being able to be removed.Also it used to be that many forms of malware did not load in safe mode, but the bad guys have gotten better in their coding and new methods allow spyware and viruses to boot up[..]

Understanding Hidden Threats: Corrupted Software Files

Malicious code is not always hidden in web page scripts or unusual file formats. Attackers may corrupt types of files that you would recognize and typically consider safe, so you should take precautions when opening files from other people.

What types of files can attackers corrupt?

An attacker may be able to insert malicious code into any file, including common file types that you would normally consider safe. These files may include [..]