Identifying Vulnerabilities in Software Defined Networking (SDN) Layers
Software Defined Networking (SDN) is a new way of providing virtualized networking. As with any new technology, potential security vulnerabilities need to be anticipated and addressed as much as possible. Of course, we can only try to anticipate what aspects of SDN hackers may target. The protocols are new, the controller software is new, and […]
Insight 2014 Unites NetApp Community
GTRI is a NetApp Gold Partner. Recently we sent several attendees to the NetApp Insight engineering conference October 27-30 in Las Vegas.
Accounting for Differences between DHCPv6 and DHCP
Much has been said regarding the sometimes-subtle, sometimes-obvious ways that “shiny new” IPv6 is different from the “legacy” IPv4 protocol. One subtle example is how IPv6 uses ICMPv6 for the Neighbor Discovery Protocol (NDP) compared to IPv4’s broadcast messages and ARP method. One overt example is how IPv6 uses behemoth 128-bit addresses where IPv4 uses […]
Why Router-Based DHCP Won’t Work With IPv6
There are many enterprise companies who are still using DHCP for IPv4 on their routers/switches. This is typically done by the network administrator who needs to get a DHCP capability up and running quickly but does not have access to a DHCP server. More often than not, this is done by an IP Telephony engineer […]
How OpenStack Works with IPv6
You can’t go anywhere these days without hearing about cloud-based services. Even novice Internet users who are not tech-savvy now refer to the Internet as “the Cloud.” These people are not the least bit familiar with the IT infrastructure required to establish a cloud service or the software that is used to manage and maintain […]
Make Your Product Dual Protocol, or Pay the Consequences Later
Lately the IPv6 community has been witnessing a disturbing trend. Brand new networked products are being introduced to the market without IPv6 capabilities. Undoubtedly, these companies intend for their products to remain relevant for the foreseeable future. However, they RTM their software with an already obsolete feature-set. But the cost to change these products later […]
Think You Don’t Need GPUs in the Datacenter? Think Again
I will admit it. Three years ago… scratch that… LAST year even, I was someone who was struggling to see a mainstream fit for a GPU (Graphics Processing Unit) in the datacenter, beyond places like Pixar and Dreamworks. It always seemed to me that just getting proper network access to data and applications was a […]
Cisco’s Application Centric Infrastructure and Promise Theory
If you search online for “promises,” you’ll find a bevy of quotes about broken ones. It seems that many of us humans just can’t keep our promises to each other. Fortunately machines have a better track record in this area.
Securely Enabling ICMPv6 Router Advertisements on Your IPv6 Network
When a dual-protocol host joins a network, it sends an ICMPv6 (type 133) Router Solicitation (RS) message to inquire about the local IPv6-capable router on the network. The local router is tuned into the ff02::2 (all-router’s multicast group address) and will receive the RS message. In response to the RS, the router immediately sends an […]
Cisco Live: All about Networking
Last week I was given the opportunity to attend the 25th annual Cisco Live conference, which was held in San Francisco. Cisco Live offers a glimpse into the latest products and technologies offered by Cisco Systems. It provides a plethora of information in new and existing network technologies. But the best part of Cisco Live […]
