CEO of FusionLayer, Inc.
Joined on November 15, 2011 – Finland
Total Post Views: 56,583
Juha Holkkola is the Chief Executive of FusionLayer, Inc. An inventor with several patents in the US and Europe, he has a keen interest for technology concepts with tangible operational impact. Juha is an active advocate of emerging technology trends such as cloud computing, IPv6 and DNSSEC, and a regular speaker at various industry events.
FireEye announced a new piece of malware yesterday named MULTIGRAIN. This nasty piece of code steals data from Point of Sale (PoS) and transmits the stolen credit card numbers by embedding them into recursive DNS queries. While this was definitely a great catch by the FireEye team, the thing that bothers me here is how DNS is being used in these supposedly restrictive environments. more»
Over the last couple of years, the networking industry has grown aware of the various security issues that could potentially have a huge impact on their operations. One of the topics that has raised in appeal is DNS security. Considering that much of the publicity around DNS is made by vendors trying to differentiate their solutions, there are many misconceptions out there that guide people into making poor investment in their infrastructure. more»
Software-Defined Networking (SDN) and Network Functions Virtualization (NFV) have been picking up the pace as of late. A high percentage of communication service providers and large data centers have either added these technologies on their roadmaps, or are already doing small-scale Proof-of-Concepts (PoC) in their testbed environments. more»
Service providers have traditionally organised their operations around different technology domains. The responsible teams have been staffed with specialists looking after routing, network services, security and various other functional areas. Over time, organizations like this have had the tendency to transform into loosely tied silos with limited interaction between the different teams. more»
In the first part of this trilogy, I discussed the importance of automatically provisioned second generation DNS in connection with Software Defined Networking (SDN) and Software Defined Data Centre (SDDC). In the second post, I talked about IP addressing, private enterprise networks, and how DHCP does not meet the requirements of multitenant Infrastructure-as-a-Service (IaaS) cloud environments. I will now wrap up this trilogy by putting these two thesis into real-life context. more»
In my previous post, I talked about the significance of DNS in connection with the Software Defined Data Center (SDDC) and Software Defined Networking. Although the second generation DNS provisioning model I outlined should have seemed straight-forward enough, in real life it is anything but. In my view, the real-world complications of a seemingly trivial issue are largely related to how the network industry approaches IP addressing. more»
During 2012, Software Defined Networking (SDN) seemed to be all the rage. The VMware acquisition of Nicira during the summer doldrums for US $1.26 billion validated the fact that the SDN paradigm is expected to have some serious legs over the coming years. I guess the same applies to virtualized network services in general, although the acquisitions in that space were not quite as high-profile as the ones in SDN. more»
Over the last couple of months, the enterprise computing space seems to have started a shift from private cloud paradigm into the hybrid cloud model. That makes sense, because the hybrid cloud allows companies to forgo the capital and the operating expenses associated with private clouds, in exchange for a pay-as-you-go model where you can just sit back and consume the business applications. more»
In my previous blog on the topic, I stated that the business case supporting the IPv4 roll-out in the late 90s was the Internet. Although IP depletion will slowly become a reality, the chances are that due to mitigating technologies such as NAT and DNS64, it may take quite a while before organizations in the developed economies will get serious about IPv6. So where should we look to find a business case for IPv6? more»
When discussing IPv6, it is easy to forget that we are ultimately talking about an enhanced version of an existing network protocol. Sure, it brings about a number of technical advantages. But when viewed in isolation - without a business case - there really are not that many drivers that would place IPv6 on the agenda of the top decision makers looking after budgets. For IPv6 to gain serious momentum, this has to be changed. more»
Virtualization of core network services such as DDI has created a lot of controversy over the last couple of years. Perhaps most notably, Infoblox and Gartner have been both claiming that virtualized network services are not on the agenda of larger organizations, nor will they ever be. I'm not sure I have ever seen a convincing technological reasoning for this position. Rather, the logic has always been circular: it's not going to happen because we're not seeing it happening. more»