At Arista we have always embraced open networking trends by designing our hardware and software to be as programmable as possible, driving the use of merchant silicon and diversity for the broader industry. It has allowed our customers to select their favorite silicon architectures for the switch pipeline and choose the suite of software and hardware they want to form their cognitive network systems.
At Arista we have always embraced open networking trends by designing our hardware and software to be as programmable as possible, driving the use of merchant silicon and diversity for the broader industry. It has allowed our customers to select their favorite silicon architectures for the switch pipeline and choose the suite of software and hardware they want to form their cognitive network systems.
With microservices driving data center automation, IT professionals need to prepare by adding new skills such as DevOps.
With microservices driving data center automation, IT professionals need to prepare by adding new skills such as DevOps.
A friend gave me an interesting task: extract IP TTL values from TCP connections established by a userspace program. This seemingly simple task quickly exploded into an epic Linux system programming hack. The result code is grossly over engineered, but boy, did we learn plenty in the process!
CC BY-SA 2.0 image by Paul Miller
You may wonder why she wanted to inspect the TTL packet field (formally known as "IP Time To Live (TTL)" in IPv4, or "Hop Count" in IPv6)? The reason is simple - she wanted to ensure that the connections are routed outside of our datacenter. The "Hop Distance" - the difference between the TTL value set by the originating machine and the TTL value in the packet received at its destination - shows how many routers the packet crossed. If a packet crossed two or more routers, we know it indeed came from outside of our datacenter.
It's uncommon to look at TTL values (except for their intended purpose of mitigating routing loops by checking when the TTL reaches zero). The normal way to deal with the problem we had would be to blacklist IP ranges of our servers. But it’s not that Continue reading
Follow these security best practices to prevent your organization from falling victim to a ransomware attack.
Follow these security best practices to prevent your organization from falling victim to a ransomware attack.
One of my readers found this Culumus Networks article that explains why you can’t have more than a few hundred VXLAN-based VLAN segments on every port of 48-port Trident-2 data center switch.
Expect to see similar limitations in most other chipsets. There’s a huge gap between millions of segments enabled by 24-bit VXLAN Network Identifier and reality of switching silicon. Most switching hardware is also limited to 4K VLANs.
Read more ...Drupal has recently announced an update to fix a critical remote code execution exploit (SA-CORE-2018-002/CVE-2018-7600). In response we have just pushed out a rule to block requests matching these exploit conditions for our Web Application Firewall (WAF). You can find this rule in the Cloudflare ruleset in your dashboard under the Drupal category with the rule ID of D0003.
Drupal Advisory: https://www.drupal.org/sa-core-2018-002
For those who might expect Microsoft to favor its own Windows-centric platforms and tools to power comprehensive infrastructure for serving AI compute and software services for internal R&D groups, plan on being surprised.
While Microsoft does rely on some core windows features and certainly its Azure cloud services, much of its infrastructure is powered by a broad suite of open source tools. As Jim Jernigan, senior R&D systems engineer at Microsoft Research told us at the GPU Technology Conference (GTC18) this week, the highest volume of workloads running on the diverse research clusters Microsoft uses for AI development are running …
An Inside Look at What Powers Microsoft’s Internal Systems for AI R&D was written by Nicole Hemsoth at The Next Platform.
Amdocs' leadership position in ONAP seems to have given it an entrée with a major public cloud provider. And an Amdocs exec says open source is an environment where you cannot disconnect technical relationships from business.
Metaswitch’s routing and control plane protocols run as applications on top of AT&T’s disaggregated network operating system. That dNOS platform this week moved to the open source community as DANOS.
Drupal has recently announced an update to fix a critical remote code execution exploit (SA-CORE-2018-002/CVE-2018-7600). This patch is to disallow forms and form fields from starting with the “#” character which results in remote code execution.
We have also in accordance, just pushed out a rule to block requests matching these exploit conditions for our Web Application Firewall (WAF). You can find this rule in the Cloudflare ruleset in your dashboard under the Drupal category with the rule ID of D0003.
Drupal Advisory: https://www.drupal.org/sa-core-2018-002