Protecting iOS against the aLTEr attacks

Researchers from Ruhr-Universität Bochum & New York University Abu Dhabi have uncovered a new attack against devices using the Long-Term Evolution (LTE) network protocol. LTE, which is a form of 4G, is a mobile communications standard used by billions of devices and the largest cellular providers around the world. In other words, the attack can … Continue reading Protecting iOS against the aLTEr attacks

My experience at Cisco Live 2018 in Orlando

I have had many people ask me about what Cisco Live is like, from my perspective as a long-time attendee and a member of the Hall of Fame Elite for speakers.  While my perspective may be a bit different than your average attendee, I thought I’d give it a shot and write it up. Cisco … Continue reading My experience at Cisco Live 2018 in Orlando

Workaround to restore a non-supervised iOS backup onto a supervised iOS phone

The date was June 26th 2017.  Cisco’s CEO, Chuck Robbins, was delivering his keynote at Cisco Live US in Las Vegas. Out comes a very special guest, Apple’s CEO, Tim Cook, who sat on a stool next to Chuck & they announced a few things to the world that were coming out of the Apple|Cisco … Continue reading Workaround to restore a non-supervised iOS backup onto a supervised iOS phone

Give me my Attribute mapping back for Sponsor Groups

In ISE 1.0 Cisco introduced an integrated Guest solution with a next-generation RADIUS-based policy server.  That policy server was game-changing, certainly.  Other companies responded to this market changing model by making some very strategic moves with their chess pieces to be similarly positioned. Figure 1 shows an example of the ISE 1.2.x (and below) Sponsor … Continue reading Give me my Attribute mapping back for Sponsor Groups

Standards for Secure-Network-Access

I'm amused at how often I hear negative comments about proprietary enhancements from Cisco.  I am one of many (many, many, many) employees of Cisco who is actively involved in standards body organizations, including the IETF.  Many of today's networking standards have started out as proprietary solutions that are available years prior to the standard being complete. … Continue reading Standards for Secure-Network-Access

Simply Put: How Does Certificate-Based Authentication Work?

I find a few universal truths when mentioning certificates to people. Most people I speak with consider them to be a very secure concept almost without fail. However upon mentioning that I want to talk about certificates: that person's face turns a slightly lighter shade, their eyes get a bit wider, and they have this … Continue reading Simply Put: How Does Certificate-Based Authentication Work?

Realm Stripping

I am often asked about support for “Realm Stripping”, albeit mostly by those in the University Space.  It’s an interesting concept, certainly.  The idea is that someone will issue an identity that includes some “routing” information within the identity.  For example, a user may issue a username of: johndoe@somedomain.com.  From that username, the RADIUS server … Continue reading Realm Stripping