After typing the command "apt-get install openssh-server", the message below pops up: ------------------------------- Reading package lists... Done Building dependency tree Reading state information... Done Package openssh-server is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source
E: Package 'openssh-server' has no installation candidate ------------------------------- I googled this message for a while and found this quite common when installing softwares.
Is there something not yet done so this problem is here? Any help appreciated.