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1. Mysql could not start ssh tunnel manager ubuntu how to#
2. Mysql could not start ssh tunnel manager ubuntu install#

Mysql could not start ssh tunnel manager ubuntu install#

autossh needs to manually be installed ( sudo apt install autossh). autossh: same command interface as ssh, except that autossh automatically restarts the ssh command if terminated.To start the tunnel when startup, refer to this post. To start the tunnel in background autossh -o "ServerAliveInterval 30" -o "ServerAliveCountMax 100" -R \*:2222:localhost:22 -fNT To allow the access from other host, such as from a different machine or from a docker container host, you must change the default GatewayPorts option in /etc/ssh/sshd_config and restart the sshd server with systemctl restart sshd. "clientspecified": up to client, i.e., the int option in the previous section of this post."yes": always force to wildcard interface.(default) "no": always force to loopback interface.In sshd_config, there are 3 values of GatewayPorts config The argument may be ''no'' to force remote port forwardings to be available to the local host only, ''yes'' to force remote port forwardings to bind to the wildcard address, or ''clientspecified'' to allow the client to select the address to which the forwarding is bound. GatewayPorts can be used to specify that sshd should allow remote port forwardings to bind to non-loopback addresses, thus allowing other hosts to connect. This prevents other remote hosts from connecting to forwarded ports. By default, sshd(8) binds remote port forwardings to the loopback address. Specifies whether remote hosts are allowed to connect to ports forwarded for the client. Reserve tunnel with ssh -R \*:2222: firewalled:2200 server GatewayPorts config When opening port at remote server, uhost:uport is relative to local, and vice versa. Rule 4: the rest is the destination for request forwarding.Based on this rule, we know that dport is the port to be occupied for request listening. The port that comes with it must be the port to be occupied. Rule 3: because interface value is optional.Rule 2: For - Remote, a remote (server's) port is opened, for - Local, a local port is opened, for listening.Rule 1: group them by int:dport and uhost:uport.

Mysql could not start ssh tunnel manager ubuntu how to#

How to remember and interpret these commands: -N: do not execute command, do port forwarding only.Usually, -NT flags are used with these commands. uhost:uport: The (upstream) host:port that will be used to forward requests.int:dport: listening/downstream interface:port that will be occupied (at remote or local), needed to be available.Forward tunnel = local port forward: ssh -L dport:uhost:uport server.Reverse tunnel = remote port forwarding: ssh -R dport:uhost:uport server.