Russ

Author Archives: Russ

Blogging Workflow

A lot of folks start out to blog, and then quit soon after. Since I started blogging mainly as a way to build some discipline in my writing, I was determined not to let my blog become a cob web, a page that was not updated on a regular basis, I started blogging determined to build a process, or a blogging workflow. I should emphasize at this point that blogging, as all writing, is a habit and a discipline. It’s not just “something that happens on its own.” If you are going to blog, start with the same mindset—focus on the habits and discipline first, the blog second.

I (mostly) build all the content for ‘net Work on Saturday mornings. Sometimes it slips to Sunday or Monday, depending on what is going on, but I normally spend no more than about 2 to 3 hours a week on keeping this blog up and running, including normal maintenance. There are times when I spend much more—for instance, if I’m switching platforms, or switching themes. There are other times when I need to spend time in code, or researching something specific, for a blog post (or a set of posts), but Continue reading

Moving to a Single Domain

For various reasons, I’m changing my DNS provider; the new provider will not support the .guru TLD, so I’m going to drop it, and just stick with rule11.us. I think most folks are pointing to rule11.us anyway, but I thought I’d post this here so you’d see if it not.

The post Moving to a Single Domain appeared first on 'net work.

Moving to a Single Domain

For various reasons, I’m changing my DNS provider; the new provider will not support the .guru TLD, so I’m going to drop it, and just stick with rule11.us. I think most folks are pointing to rule11.us anyway, but I thought I’d post this here so you’d see if it not.

The post Moving to a Single Domain appeared first on 'net work.

Cisco Live Berlin

I will be speaking at the CCDE Techtorial at Cisco Live in Berlin February 20-24 (just a few short weeks away)! Come by and hang out, or meet Elaine and I for lunch on Tuesday to talk about the CCDE.

The post Cisco Live Berlin appeared first on 'net work.

Cisco Live Berlin

I will be speaking at the CCDE Techtorial at Cisco Live in Berlin February 20-24 (just a few short weeks away)! Come by and hang out, or meet Elaine and I for lunch on Tuesday to talk about the CCDE.

The post Cisco Live Berlin appeared first on 'net work.

Worth Reading: The state of DNS security

Did you know that 89% of top-level domains are now signed with DNSSEC? Or that over 88% of .GOV domains and over 50% of .CZ domains are signed? Were you aware that over 103,000 domains use DANE and DNSSEC to provide a higher level of security for email? Or that 80% of clients request DNSSEC signature records in DNS queries? All these facts and much more are available in our new State of DNSSEC Deployment 2016 report. —The Internet Society

The post Worth Reading: The state of DNS security appeared first on 'net work.

BGP Flowspec Indirection

While Flowspec has been around for a while (RFC5575 was published in 1999), deployment across AS boundaries has been somewhat slow. The primary concerns in deploying flowspec are the ability to shoot oneself in the foot, particularly as poening Flowspec to customers can also open an entirely new, and not well understood, attack surface, and the simple cost of filtering packets. In theory, ASICs can filter packets based on a variety of parameters cheaply. Theory doesn’t always easily translate to practice, however.

Regardless, recent work in Flowspec is quite interesting; particularly the ability to redirect flows, rather than simply filtering them. Of course, the original RFCs did allow for the redirection of flows into a VRF on the local router, but this leaves a good bit to be desired. To make such a system work, you must actually have a VRF into which to redirect traffic; for one-off situations, such as directing attack traffic to a honey pot, building the VRF and populating it can be more work than capturing the traffic is worth. A newer draft, draft-ietf-idr-flowspec-path-redirect, aims to resolve this.

Before getting to the draft specifics, however, it is useful to review the basic concept of Continue reading