Eduroam
Eduroam (education roaming) is an international roaming service for users in research, higher education and further education. It provides researchers, teachers and students easy and secure network access when visiting an institution other than their own. Authentication of users is performed by their home institution, using the same credentials as when they access the network locally, while authorization to access the Internet and possibly other resources is handled by the visited institution. Users do not have to pay for using eduroam.
National Roaming Operator (NRO)
LEARN is the eduroam National Roaming Operator in Sri Lanka for .lk domain. It is peering with APAN TLRS (top level eduroam radius servers) and responsible for providing NRO service to all education institutions in the country that need to go under the .lk domain.
More detail at LEARN eduroam site http://eduroam.ac.lk