Over the past few months there has been a lot of research and press coverage on the Shamoon campaigns. These have been the attacks on Saudi Arabian companies where a destructive malware known as Disttrack was deployed. The malware, using stolen credentials, spreads throughout the […]
Read moreIn an earlier blog post, I discussed the issues associated with IPv6 packet fragmentation. Of particular significance, IPv6 fragmentation relies extensively on the computer sourcing packets being able to receive ICMPv6 “packet too big” message type 2 sent from any intermediate device in the route […]
Read moreLast week in Chicago, at the annual SIGCOMM flagship research conference on networking, Arbor collaborators presented some exciting developments in the ongoing story of IPv6 roll out. This joint work (full paper here) between Arbor Networks, the University of Michigan, the International Computer Science Institute, Verisign Labs, […]
Read moreI’ve always found sites which test IPv6 connectivity interesting. In 2005, I implemented the ipv6calc cgi software as part of a server-side include that reported which IPv4 or IPv6 address the visitor was using to visit the Web site. At that time, the number of IPv6-enabled visitors […]
Read moreThere is a certain level of skill to creating an IPv6-capable network. There is even more skill to creating an IPv6-capable network correctly. To help confirm an IPv6-capable network has been configured correctly and that “upstream” IPv6 connectivity is correct, there are several Web sites […]
Read moreThe IETF IPv6 maintenance working group has begun discussions about deprecating IPv6 fragmented packets, spurred by the IETF Internet-Draft, “IPv6 Fragment Header Deprecated”. As one can guess, this draft has generated a lot of discussion (Although the Internet Draft discusses deprecation of the IPv6 fragment […]
Read moreIn many respects, implementing IPv6 networks isn’t a lot different than implementing IPv4 networks. However, there are certainly aspects of IPv6 that represent challenges new to network engineers familiar with addressing today’s IPv4 networks. When designing IPv6 networks, caution must be taken to avoid router […]
Read moreThe next-generation Internet Protocol, IPv6, has experienced more growth in the last 2 years than in any other period in its 18-year existence . While there are many challenges ahead in the deployment of IPv6, IPv6 is a certain, although eventual, replacement for the currently […]
Read moreIf you are reading this, it’s likely you have already deployed an Intelligent DDoS Mitigation System or plan to do so soon. It’s a great feeling to know you are seeing and stopping attacks. It’s also important to know that you have the systems properly […]
Read moreWorld IPv6 Launch has come and gone, and we now have the opportunity to examine its impact on Internet traffic delivery and the migration to IPv6. While our previous blog posts focused on the day itself, this time we are taking a longer view and looking at […]
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