I'm suspecting the 4g operator (free mobile / france) to be the cause of this.Ĭan I log some stuff to know more on the both ends ?Īs suggested, ran ssh with the following line : ssh -v -o ExitOnForwardFailure=yesĪfter some time (undetermined), got the following result : packet_write_wait: Connection to . When we create a tunnel, we specify an address and port on which it will answer, and an address and port to which it will be delivered. The first command creates a SSH tunnel which will listen on 127.0.0.1:22222 on machineB that tunnels to localhost:22 on machineA. ![]() ![]() I'm trying to understand what's the problem here, I lack of forensics tools to get some details.Īlso, I've tried localtunnel : Works, but after a random amount of time also, the connection crash with a message refering to "check your firewall settings" Note: We are working with root user, if you are not logged in as root, add sudo in the front of the commands. This allows the tunnel to be accessible on a quite random basis.įrom inside my remote network, on a PI computer with raspbian 10, I use the autossh command : autossh -M 0 -o "ServerAliveInterval 30" -o "ServerAliveCountMax 3" -NR 0.0.0.0:8822:localhost:22 started, this tunnel allows me to connect to the PI through the VPS and the tunnel.īut as said before, after a random amount of time (several minutes / few hours), one end seems to be disconnected. Step two Setting up a reverse SSH tunnel. After a certain amount of time, the connection seems to be dropped the only trick I have found is to reboot the target of the tunnel (a VPS server). For that I want to use an external server that it's always on, and I want to set up my office computer to run the ssh command right at boot (before login). Example SSH session to forward port 8080 with ssh connection RHEL/CentOS. I'd like to connect with reverse SSH tunneling. Configure SSH Port forwarding tunneling between local and remote host in Linux. Since 4g dows not allow to bind ports from the router to the internal network, I'm trying to setup a reserve tunnel.īut it's quite unstable. Reverse SSH is a highly configurable, production-quality, SSH-based solution that customers can choose to implement if they have private/internal data. Learn how to setup a reverse SSH tunnel by way of an easy to understand example that allows a local service to be securely accessible by a remote connection. I need to connect to my office computer through ssh, but all the ports are blocked and there is nothing to do there. If not, try 0.0.0.0 or 192.168.1.6 instead, although the last one would prevent you to connect locally using localhost ). ![]() I'm trying to allow access to a remote network behind a 4g router. Replace your tunnel command by this one: ssh -fN -R :2023:localhost:22 user10.0.2.2 (I didn't try it, but should work according to the manual page.
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