DomainTools

Farsight DNSDB Time-Fenced Queries: the "New World" Code Is Now Faster-Running

54 — Thu, 06 Apr 2023 15:59:29 +0000

An Improved Farsight DNSDB Experience The Farsight DNSDB Engineering Team is relentlessly “on the hunt” for ways to improve our DNSDB customers’ experience. One area prioritized for attention has been the speed of some DNSDB time-fenced queries. We’re happy to report that the engineering team has developed and deployed an optimization to help speed up […]

Carrying Arbitrary Data Payloads (Such as Images) In NMSG

54 — Thu, 02 Mar 2023 16:51:07 +0000

Introduction If you work with SIE (the Security Information Exchange), you’ll have encountered NMSG-format files. NMSG is the format Farsight Security (now part of DomainTools) uses to distribute DNS cache miss traffic and other cybersecurity data over SIE’s jumbo frame-enabled Ethernet switches. NMSG payloads normally contain small observations, and in fact, we’re often able to […]

Remote Profiling of go Programs

57 — Fri, 28 Oct 2016 10:33:59 +0000

The go programming language’s profiling subsystem can expose profiling information over HTTP. In this article, Chris Mikkelson shows how to use this feature wisely to provide profiling access to deployed code.

Smarter JSON Configs in Go

57 — Mon, 23 May 2016 10:31:37 +0000

Senior Distributed Systems Engineer Chris Mikkelson shows how to use the Go standard JSON library’s type system to add validation and preprocessing to JSON config files.

Fun With Go Method Routing

57 — Tue, 12 Apr 2016 09:47:36 +0000

Senior Distributed Systems Engineer Chris Mikkelson discusses using Go interfaces to route method calls when you really want virtual methods.

Introducing NXD

57 — Thu, 20 Aug 2015 02:15:29 +0000

Senior Distributed System Engineer Chris Mikkelson introduces Farsight’s DNS Errors and NX Domains services.

Processing Passive DNS With the nmsg C API

57 — Wed, 18 Mar 2015 05:34:14 +0000

Using Farsight Security’s open source C APIs to examine raw passive DNS data.