If IPv6 connectivity exists, a connection to the proServer2G can be established directly. Otherwise, access must be tunneled through a so-called jump host. In practice, this is usually regulated by a suitable entry in the ~/.ssh/config file of the developer, but is also possible manually via corresponding call parameters. For the following examples, we use vproWXYZ as the host and user name.

Example for ssh via Jumphost with explicit parameters:

ssh -J jumping@ssh-jumphost.karlsruhe.punkt.de vproWXYZ@vproWXYZ.proserver.punkt.de

Example for uploading file.tar via Jumphost with explicit parameters:

scp -o ProxyJump=jumping@ssh-jumphost.karlsruhe.punkt.de file.tar.gz vproWXYZ@vproWXYZ.proserver.punkt.de:

It is usually more convenient to create an entry as follows in ~/.ssh/config:

Host vproWXYZ HostName vproWXYZ.proserver.punkt.deUser vproWXYZ ProxyJump jumping@ssh-jumphost.karlsruhe.punkt.de

This means that a simple

ssh vproWXYZ