A hearing aid specialist, also known as a hearing instrument specialist, is a professional who evaluates people with hearing problems and chooses the best hearing aid to improve their condition. Hearing loss is frequently encountered among the elderly, but also in younger people.
For other uses, see SSH (disambiguation). Secure Shell (SSH) is a cryptographic network protocol for operating network services securely over an unsecured network. The best known example application is for remote login to computer systems by users.
SSH protects a network from attacks such as IP spoofing, IP source routing, and DNS spoofing. An attacker who has managed to take over a network can only force ssh to disconnect. He or she cannot play back the traffic or hijack the connection when encryptionis enabled.