Welcome to Tolerant Networks Limited

About, Contact

We're in the business of commercialising aspects of the Delay-Tolerant Networking (DTN) technology that we've helped develop as part of the Delay-Tolerant Networking Research Group, and the EU funded FP7 project on networking for communications challenged regions (N4C).

At present, we're just starting up, we have a number of offerings:

  • Our DTN router family of solar-powered WiFi hostpot, DTN router and application servers (pictured right); the value-proposition here is that even ignoring all learning curves, its just cheaper to buy this proven DTN technology than it is to order and assemble all the parts. These devices are ideal for researchers and others who plan to run DTN trials, testbeds or other networking deployments in challenged regions.
  • Of course, learning curves cannot really be ignored so we also offer consulting, training and support for DTN router customers or for other users of the DTN2 reference implementation. These services can help you get started with the DTN router or in DTN more quickly and efficiently compared to figuring it all out from scratch.
  • We offer general DTN training, from half-day sessions, up to a full-week hands-on course, either at your site or here in Dublin, Ireland. We're happy to tailor our existing course materials to your specific needs.
  • We have developed a No Password solution based on "Http Origin Based Authentication”. We have a site (HOBA) were we have a working example of the solution.
Village DTN router


Tolerant Networks was founded in April 2010 by Stephen Farrell and Kerry Hartnett.

Dr. Stephen Farrell is a research fellow in the Distributed Systems Group of the School of Computer Science and Statistics at Trinity College Dublin, (academic home page) where he teaches and researches on security and delay/disruption-tolerant networking (DTN), and in 2006 co-authored the first book on the latter topic. Stephen has been involved in Internet standards for more than a decade; currently he co-chairs the IETF DomainKeys Identified Mail (DKIM) Working Group, is an invited expert in the W3C Web Security Context group and also co-chairs the IRTF Delay Tolerant Networking Research Group. Prior to returning to academia in 2002, Stephen had 15 years experience in industry, working for Siemens and Baltimore Technologies amongst others.

With over 20 years experience in IT Kerry Hartnett is an experienced and versatile senior IT professional. Kerry worked with Intel for 15 years in all aspects of IT. Commercially aware and results-orientated with a wide range of technical abilities, Kerry's planning and organisational skills have enabled him to repeatedly deliver complex integration projects to schedule. Kerry has a BSc. in Information Systems and is currently working on contract as a research engineer on the N4C project. Kerry's current focus is on new technology deployment in networks and research.


Registered in Ireland No.483427
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