Super Nodes
Super nodes are users, that have ports, open to the internet. They forward their listen ports to firewalled Skype users, to enable them communicating. Any user can become a super node (and can not prevent it then).
- default nodes, maintained by Skype (Microsoft?)
- the login servers are listening on UDP port 33033 ?
- dsn1.d.skype.net ...
- dsn12.d.skype.net ! so there's more than seven of them now
- furthermore it seems - although originally a peer-to-peer like distributed structure was used - nowadays Microsoft is holding all super nodes