SSH - Secure Shell
The SSH service basic purpose is allowing users to establish command line terminal sessions with servers,
in the case of DEI SSH servers command line terminal sessions on Linux Ubuntu servers.
In addition, depending on the client software being used, files transfer may be also suported by
using SFTP (SSH File Transfer Protocol).
To access these services, a suitable client (SSH client) has to be used, e.g.:
When connecting to DEI SSH/SFTP servers, the server sends its public key with
the purpose of proving it's authentic. On the first contact of a client with a server
the user is asked to confirm if the key is authentic, that information is stored by
the client software, so the confirmation won't be required on the following contacts of
that client with that server.
Once a secure communication channel is established, DEI SSH/SFTP servers, require
the user to authenticate himself with a username and a password (PAP).
The DEI SSH/SFTP services are accessible from all ISEP networks and some other local academic networks,
to access these services from elsewhere at the Internet, the use of a DEI VPN is required.
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