HUT Comms.
Lab, Timo O. Korhonen
29
Security and secrecy
nServices might require security, e. g. reliable, shielded transfer:
nrescue services
npolice
ndefence force
nsome special applications as telesurgery
nNetworks can provide this by using:
nfixed lines (PSTN)
nflexible routing (SS7)
nscrambling or encryption
ncoding
nOften secrecy is reassured in several network levels