DoorDash Engineering

AUGUST 15, 2023

But these signals almost entirely rely on application-level instrumentation, which can leave gaps or conflicting semantics across different systems. To run these eBPF probes, we have developed a Golang application called BPFAgent, which we run as a daemonset in all of our Kubernetes clusters. of a typical node’s CPU cores and memory.

DNS 84

DNS TCP Application Network 84

Kentik

MARCH 13, 2019

In addition to ever larger traffic volumes, attackers are also increasing their target diversity, with attack traffic simultaneously spanning data, applications, and infrastructure to increase the chances of success. The victim can update DNS to point at a different IP address in an attempt to get their application back up.

IP Address 49

IP Address Port Routers DNS 49

Kentik

NOVEMBER 4, 2018

In addition to basic data like source and destination IP address, port, protocol, etc., We also utilize nom , an excellent Rust parser combinator library, for high-performance decoding of application layer protocols like DHCP, DNS, and HTTP.

IP Address 67

IP Address Protocol TCP DNS 67

Kentik

APRIL 19, 2023

The CDN and the ISP peers over an IXP, the volume drives port upgrades, and private connections are impossible. Removing traffic from the edge will save money on transit and IXP port fees and lower the risk of congestion. There are more efficient ways of operating DNS resolvers, so are there any workarounds available?

IP Address 52

IP Address DNS Server Network 52

Heroku

NOVEMBER 21, 2024

beta, our engineering team has addressed several bugs, all fairly straight-forward with one exception involving Puma -based applications. A small subset of Puma applications would experience increased response times upon enabling the Router 2.0 Then we tried varying the Rails applications internal response time.

Routers 59

Routers TCP Server DNS 59

CATO Networks

MAY 20, 2024

Identification & Blocking Strategies There are multiple strategies to take into consideration when tackling the above challenges, let’s explore these strategies in detail: From a network perspective Analyzing the DNS lookup name associated with an IP address can provide valuable insights into the nature of the IP.

IP Address 52

IP Address Server Port SMB 52

Wahl Network

APRIL 25, 2024

Platforms need to scale across the Sphere of Key Scaling Components (the core, ring of services, and applications or tenants across the edge). This allowed our lightweight Platform SDK to do anything from vending accounts, building and testing application code, and deploying to the environments. DNS is another great example of this.

Engineering 52

Engineering Application Port PaaS 52

Scott's Weblog

AUGUST 16, 2024

Geoff Huston discusses DNS and UDP truncation. Security I enjoy Ben Bornholm’s article showing how to use Cilium and Tetragon to secure a vulnerable web application. Operating Systems/Applications Bhushan Shah shares some “lessons learned” using git bisect to do some Linux kernel troubleshooting.

DNS 40

DNS Server Engineering Cloud 40

Kentik

OCTOBER 30, 2017

Here at Kentik, we use a microservices architecture for our production Software as a Service (SaaS) platform, and we also happen to have a great solution for monitoring and alerting about the performance of that kind of application. The dip indicates that data collection was also affected, not just query latency.

Port 40

Port DevOps IP Address Network 40

Kentik

NOVEMBER 23, 2015

Roughly 90% of all DDoS attacks are volumetric, with application-layer attacks making up the remaining 10%. A growing percentage of attacks are reflection and amplification attacks using small, spoofed SNMP, DNS, or NTP requests to many distributed servers to bombard a target with the much more bandwidth-heavy responses to those requests.

IP Address 40

IP Address Port Protocol Internet 40

Kentik

MARCH 28, 2016

Starting with the basic ACLs of the mid 90s, the first flow fields added were IP addresses, ports, and protocol. And then they started wanting to track things that routers and switches couldn’t observe, like URL, DNS query, and application and network performance. More of a good thing.

Protocol 40

Protocol Routers MPLS IP Address 40

Kentik

JULY 28, 2021

NetOps teams have quickly learned the benefits of hosting applications in the cloud. But before they migrated or adopted a few SaaS applications, they knew in the back of their minds that monitoring performance would be difficult. Packet Loss Causes Problems with Cloud Applications. Bad hardware (the switch or router port).

Cloud 116

Cloud TCP Routers Protocol 116

CloudFaire

JANUARY 21, 2025

fasthttp is used to build fast web applications, but is often exploited for DDoS attacks and web scraping too. Security administrators can use this data to strengthen their protection on these endpoints, as applicable. We also saw a similar number of unique source ports per second. Only 6% was plaintext HTTP (not encrypted).

IP Address 121

IP Address Network Networking Server 121