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https://issues.apache.org/jira/browse/GUACAMOLE-1592?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Felix Fischer resolved GUACAMOLE-1592.
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Resolution: Workaround
I ended up setting guacamole to send a wol packet to itself (i.e. the internal
ip of the server) and then using socat to reroute all traffic coming from UDP
port 9 to TCP port 9009, on which sshd is listening and tunnels all traffic to
TCP port 9009 on the rpi. There I use socat a second time to grab all TCP
traffic from port 9009 and broadcast it to 255.255.255.255:9. I did this by
following a mix of these two guides:
[https://unix.stackexchange.com/questions/77874/transform-a-udp-unicast-packet-into-a-broadcast/77877#77877]
[https://stackpointer.io/network/ssh-port-forwarding-tcp-udp/365/]
Specifically, these are the systemd services that I run now:
Rpi:
/etc/systemd/system/socat-wol-local.service
{code:java}
[Unit]
Description=Redirect tcp traffic from port 9009 to udp broadcast
After=network.target
[Service]
ExecStart=socat -dd tcp4-listen:9009,reuseaddr,fork
UDP-DATAGRAM:255.255.255.255:9,broadcast
Restart=on-failure
RestartSec=5
[Install]
WantedBy=multi-user.target{code}
/etc/systemd/system/wol-tunnel.service
{code:java}
[Unit]
Description=SSH tunnel to oracle
After=network.target
[Service]
ExecStart=autossh -M 0 -o ServerAliveInterval=45 -o ServerAliveCountMax=2 -i
/home/user/.ssh/id_rsa -N -R 9009:localhost:9009 user@server
Restart=on-failure
RestartSec=5
[Install]
WantedBy=multi-user.target
{code}
VPS:
/etc/systemd/system/socat-wol-public.service
{code:java}
[Unit]
Description=Redirects WOL magic packet from udp port 9 to tcp port 9009 for ssh
tunnel
After=network.target
[Service]
ExecStart=socat -dd -T15 udp4-recvfrom:9,reuseaddr,fork tcp:localhost:9009
Restart=on-failure
RestartSec=5
[Install]
WantedBy=multi-user.target
{code}
This makes it so I can just have any wol packet sent on port 9 end up in my
home network through a secure connection.
> Send Wake-on-LAN via remote computer
> ------------------------------------
>
> Key: GUACAMOLE-1592
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-1592
> Project: Guacamole
> Issue Type: Wish
> Components: guacamole-server
> Reporter: Felix Fischer
> Priority: Minor
>
> I don't know if bug is the correct type of issue for my question, but I would
> like to be able to use the wake on LAN function, but relayed through another
> computer.
> I have guacamole running on a public VPS, however I use ssh tunnels to
> connect to my home machines. I have a Raspberry Pi that is always running and
> connected via ssh port forwarding, so it would be great if I could somehow
> use the pi to wake up my main machine when I try to connect to it.
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