Nottingham: Internet protocols are changing

Worth a read: thisAPNIC blog entry from Mark Nottingham on the near-term evolution ofvarious Internet protocols. "The newest change on the horizon is DOH - DNS over HTTP. A significant amount of research has shown that networks commonly use DNS as a means of imposing policy (whether on behalf of the network operator or a greater authority).Circumventing this kind of control with encryption has been discussed for a while, but it has a disadvantage (at least from some standpoints) - it is possible to discriminate it from other traffic; for example, by using its port number to block access.DOH addresses that by piggybacking DNS traffic onto an existing HTTP connection, thereby removing any discriminators."