Apcela Preps for What’s Next with Funding and New President
Its product overlays application delivery and monitoring on SD-WANs from Cisco and Versa Networks.
U.S. Congressman Bashes ZTE and Huawei in New Bill
The bill would prohibit the U.S. government from buying from the companies.
Can IPv4 Networks Be Compromised via IPv6?
The Fox-IT International Blog recently published an article on how IPv4 networks can be compromised via IPv6. The attack vector relies on the default IPv6 configuration in the Windows operating system to spoof DNS replies by acting as a malicious DNS server to redirect traffic to an attacker-specified endpoint. The Windows Proxy Auto Discovery (WPAD) feature can also be exploited in order to relay credentials and authenticate to various services within the network, using a tool called called mitm6 created by Fox-IT.
Fox-IT is recommending that IPv6 is disabled when it is not being used, as disabling Proxy Auto Detection. This of course means that Windows-based hosts are unable to switch preference to IPv6 when it is available (which all versions since Windows Vista will do), and that IPv6 would need to be explicitly re-enabled on hosts.
The article makes some important points, but IPv4 and IPv6 are fundamentally incompatible on a wire level and it needs to be understood they can’t communicate with each other except through translation devices. There are a number of known issues (including this one) with the security of automatic configuration mechanisms running on Local Area Networks, both under IPv6 and IPv4, but these require physical access to Continue reading
Meltdown and Its Networking Equivalents
One of my readers sent me this question:
Do you have any thoughts on this meltdown HPTI thing? How does a hardware issue/feature become a software vulnerability? Hasn't there always been an appropriate level of separation between kernel and user space?
There’s always been privilege-level separation between kernel and user space, but not the address space separation - kernel has been permanently mapped into the high-end addresses of user space (but not visible from the user-space code on systems that had decent virtual memory management hardware) since the days of OS/360, CP/M and VAX/VMS (RSX-11M was an exception since it ran on 16-bit CPU architecture and its designers wanted to support programs up to 64K byte in size).
Read more ...How Meltdown and Spectre Might Affect x86 Server Usage in SDN
We could see more ARM-based servers in virtualized networks.
Telenor Knocks on Nokia’s Door for SDN-Ready Optical Core Network
The upgrade is targeted at 5G, cloud services, and data center interconnections.
Nvidia Chips are Vulnerable to Spectre, Too
The company is providing security patches.
VMware NSX Micro-segmentation – Horizon 7
Organizations that embark on the journey of building our virtual desktop environments, are taking traditionally external endpoints and bringing them into the data center. These endpoints are now closer and most times, reside on the same networking infrastructure as the backend application servers that they may access. These endpoints run Windows or even Linux desktop operating systems with multiple end-users that can access them. Malicious attacks that would traditionally take place outside the data center should an end-user find their desktop or laptop machine infected, could now take place on their virtual desktops inside the data center. With physical equipment, it’s easy to isolate the physical desktop or laptop and remediate the attack. Securing virtual desktop environments requires a different approach, but not one that’s unattainable. Securing an end user computing deployments is one of the primary security use cases for VMware NSX and can help provide a layered approach to securing virtual desktop workloads in the data center.
The NSX platform covers several business cases for securing an end user computing deployment. Each of these use cases, helps provide a multi-layered approach to ensure end user endpoints are as secure as possible in the Continue reading
Equinix CEO: We’re Going After Security, Storage Services
As storage and security companies turn to software, they’ll need data centers to deploy the stacks.
Enhancing NSX with Check Point vSEC
While VMware NSX enables micro-segmentation of the Software Defined Data Center, it mostly polices traffic in layers 3 and 4, with only limited application level (layer 7) support. Sometimes additional layers of protection are needed for use cases such as Secure DMZ or meeting regulatory compliance requirements like PCI, in which case partner solutions can be added to the platform, with traffic steered into the supplemental solution prior to reaching the vSwitch (virtual wire). The resulting combination is high throughput due to the scale-out nature of NSX, but can also provide deep traffic analysis from the partner solution.
The usual enemy of deep traffic inspection in the data center is bandwidth. NSX addresses this issue, micro-segmentation security policy is zero trust – only traffic explicitly permitted out of a VM can pass, then steering policy to 3rd party solutions can be designed in order that bulk protocols such as storage and backup bypass them, leaving a more manageable amount of traffic for Check Point vSEC to provide IPS, anti-virus and anti-malware protection on, including Check Point’s Sandblast Zero-Day Protection against zero day attacks.
The connection between vSEC and NSX enables dynamic threat tagging, where traffic from an VM reaches Continue reading
Cisco Encrypted Traffic Analytics Pushes Threat Detection to Branch Offices
The technology can detect malware in encrypted traffic without decryption.
Dell EMC, VMware Fix Critical Security Flaws
The bugs could have allowed hackers to attack enterprise servers.
14,000 Incidents: a 2017 Routing Security Year in Review
How was the state of the Internet’s routing system in 2017? Let’s take a look back using data from BGPStream. Some highlights:
- 13,935 total incidents (either outages or attacks like route leaks and hijacks)
- Over 10% of all Autonomous Systems on the Internet were affected
- 3,106 Autonomous Systems were a victim of at least one routing incident
- 1,546 networks caused at least one incident
An ‘incident’ is a suspicious change in the state of the routing system that can be attributed to an outage or a routing attack, like a route leak or hijack (either intentional or due to a configuration mistake).[i] Let’s look at just a few examples of incidents picked up by the media.
March 2017. SECW Telecom in Brazil hijacked prefixes of Cloudflare, Google, and BancoBrazil causing some outage for these services in the region.
April 2017. Large chunks of network traffic belonging to MasterCard, Visa, and more than two dozen other financial services companies were briefly routed through a Russian telecom. For several minutes, Rostelecom was originating 50 prefixes for numerous other Autonomous Systems, hijacking their traffic.
August 2017. Google accidentally leaked BGP prefixes it learned from peering relationships, essentially becoming a transit provider instead Continue reading
Verizon Software-Defined Perimeter Adds Fhoosh Security Technology
The software enables secure HD video streaming from IoT devices.
“Building NSX Powered Clouds and Data Centers for SMBs” is available now
I am honored and humbled to announce my new book “Building NSX Powered Clouds and Data Centers for Small and Medium Businesses”.
This is a concise book that provides step by step information to design and deploy NSX in Small and Medium size data centers. My aim for writing this book is to give architects and engineers the necessary tools and techniques to transform their data center from legacy architecture to software defined (SDN) architecture. The SDN architecture is the foundation to build the private cloud.
The book has about 90 pages covering following topics:
- NSX and SMB data center introduction
- Important vSphere design considerations
- vSphere cluster design and NSX deployment models
- NSX individual component design and deployment considerations
- NSX Operations: monitoring and troubleshooting
- Growing NSX deployments
Many technology vendors tend to focus efforts in the large data center space, the fact remains that the small/medium business (SMB) space represents a substantial part of the IT marketplace.
The book is available to purchase from NSX Store.
Electronic version of the book can be downloaded from here.
The post “Building NSX Powered Clouds and Data Centers for SMBs” is available now appeared first on Network Virtualization.
VMware Cloud on AWS with NSX: Communicating with Native AWS Resources
If you haven’t already, please read my prior two blogs on VMware Cloud on AWS: VMware SDDC with NSX Expands to AWS and VMware Cloud on AWS with NSX – Connecting SDDCs Across Different AWS Regions; also posted on my personal blog at humairahmed.com. The prior blogs provide a good intro and information of some of the functionality and advantages of the service. In this blog post I expand the discussion to the advantages of VMware Cloud on AWS being able to communicate with native AWS resources. This is something that would be desired if you have native AWS EC2 instances you want VMware Cloud on AWS workloads to communicate with or if you want to leverage other native AWS services like AWS S3 VPC Endpoint or RDS. Continue reading
VMware Cloud on AWS with NSX: Communicating with Native AWS Resources
If you haven’t already, please read my prior two blogs on VMware Cloud on AWS: VMware SDDC with NSX Expands to AWS and VMware Cloud on AWS with NSX – Connecting SDDCs Across Different AWS Regions; also posted on my personal blog at humairahmed.com. The prior blogs provide a good intro and information of some of the functionality and... Read more →
The Meltdown and Spectre CPU Flaws Reverberate
Linus Torvalds had harsh words for Intel.
Meltdown and Spectre: Why We Need Vigilance, Upgradeability, and Collaborative Security
Today the tech media is focused on the announcement of two security vulnerabilities, nicknamed Meltdown and Spectre, that are found in almost all CPUs used in modern devices. Mobile phones, laptops, desktop computers, cloud services, and Internet of Things (IoT) devices are all vulnerable.
There are many articles being published on this topic. The best source of information I’ve found is this site by the security researchers at the Graz University of Technology:
At the bottom of that page are links to the security blog posts, advisories, and other statements from companies and organizations across the industry. In an excellent example of the principles of Collaborative Security, the announcement was coordinated with the release of patches and updates for a wide range of operating systems and devices.
For readers wanting a deeper technical dive, the site from Graz University has links to multiple academic papers. Google’s Project Zero team also published a detailed technical analysis.
From our perspective, today’s news highlights a couple of points:
- Keeping up to date on patches is critical. We each need to ensure that we upgrade our own systems and devices. If we work for organizations/companies, we need to ensure that processes are in place Continue reading
Google, Microsoft, AWS Scramble to Limit Impact from CPU Security Bugs
These CPU security bugs have been around for 20 years, says AWS.