The main reason for this system panic error is that socket is being closed while packet sent via that socket is queued to userspace. After userspace reinjects (userspace or another netfilter rule asks for the packet to get queued again,) the refcount transition will be 1 -> 0 -> 1 (-> 0), thus double-free occurs. …
How to configure a SSH tunnel?
On the client machine perform the following step: [root@host]# ssh -N -L :: user@remote-machine-ip From a new console/terminal execute the telnet command as follows: [root@host]# telnet localhost This kb is relevant to the following; Encrypt the traffic by SSH tunneling the connection to remote host. Encrypt unencrypted network traffic