How to Achieve Session Persistency on Load Balancing Firewalls

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Let’s start by defining session persistency in the context of load balancing firewalls. Session persistency is the ability of the broadband bonding load balancer to keep the on going session alive even during WAN network problems. These WAN network problems can be anything from spike in packet loss rates to full-disconnects. In essence a load balancing firewall has the […]

session persistency in load balancing firewalls

VNF WAN load balancer

Is VNF WAN Load Balancer possible?

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With the invent of software defined architectures, including Software Defined WAN (SD-WAN), it is possible to “program” your WAN network remotely and to customize your office WAN as a function of your network requirements, application flows and many other factors, some of which might be unique to your network. Is it possible then to have […]

What is VNF (Virtual Network Function) and why should you care?

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Data centers are going through a paradigm shift from a manually configured set of servers and storage appliances, to a software defined architecture, where the servers and storage appliances (virtual or physical) can be managed and operated via a software defined architecture. This means less manual errors, lower cost and more efficient way to operate […]

Virtual Network Function

Bandwidth Bottleneck

Where is the bandwidth bottleneck?

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Recently Nature magazine posted a thorough article about bandwidth bottleneck and researchers race to solve some of the fundamental challenges that can push us through the bandwidth limits. Even though limits in fiber optics, and semiconductor chip technologies exist, they are usually less costly to improve and therefore are usually not the choking points. Connecting […]

Can You Rely on IPSec alone for Security ?   Recently updated !

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IPsec is an IETF standard that enables mutual authentication between hosts and also facilitates negotiation of cryptographic keys that will be used in encrypting the IP packets. Even though IPsec support encryption without authentication, that is really not a good idea for security. With the latest news about NSA tools potentially being stolen and available […]

IPsec security

business continuity with SD-WAN

Business Continuity with SD-WAN

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Delta Airlines lost millions of dollars this week, according to Wall Street Journal report, all caused by a single networking device problem (reported as “switchgear problem”). The early measurements of the cost of the outage is not taking into effect the bad publicity and PR this created as well as the bitter taste for passengers who […]

What is Network Function Virtualization – NFV, and how will it impact your WAN?

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Network Function Virtualization (NFV) is the concept of being able to programmatically add/modify the functionality of a network. You can think of NFVs as virtual appliances that you program into a network to inject various services into the network. Some of the primitive NFV concepts rely on static capabilities such as firewall’ing, NAT’ing, DHCP and […]

Optimizing WAN with NFV