requirements: make sure ssh public key auth works without password: pcA -> pcB, and pcB -> pcC

pcB = “jumphost”

# in general
pcA <----> pcB <---- pcC (x11vnc)
# yes it's kind of a weird syntax X-D
ssh -L 5900:pcC:5900 user@pcB

# example
# can be run as non-root user
ssh -L 59000:192.168.4.112:5900 user@192.168.0.48

# then start, should connect to x11vnc running on 4.112
vncviewer 127.0.0.1:59000

how to automate this via remmina?

for some reason remmina does not run the command… or does not wait for the command to complete, so this does not work 🙁

# so run it manually
ssh -L 59000:192.168.4.112:5900 user@192.168.0.48

then connect

why does mate desktop network manager keep disabling dropping NIC network interface?

it’s annoying and possible… networkmanager of gnu linux mate desktop waits a certain time (spinning symbol)

dpkg -l|grep network-manager
ii network-manager 1.42.4-1 amd64 network management framework (daemon and userspace tools)
ii network-manager-gnome 1.30.0-2 amd64 network management framework (GNOME frontend)

for a reply from a dhcp server … if there is none, it assume this connection has no connectivity (no internet) and thus “worthless” and then the interface is downed X-D (dropping all connections to the manual additionally defined IP address)

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