diff options
| -rw-r--r-- | README.md | 43 | ||||
| -rwxr-xr-x | proxy-tcp-ssh.sh | 4 |
2 files changed, 46 insertions, 1 deletions
@@ -0,0 +1,43 @@ +# Establish persistent ssh tunnels + +Establish a persistent TCP tunnel between a local endpoint and a remote server. +If the connection drops, reconnection attempts are made every 10 seconds. + +``` +SYNOPSYS + ./proxy-tcp-ssh.sh (-S|--ssh-host) SSHHOST (-t|--tunnel) TUNNELSPEC [OPTIONS] +DESCRIPTION + Spawn TCP tunnels between your computer and a remote SSH server. If the + connection fail for some reason, the script will try to re-create the + tunnels automatically every TIMEOUT seconds. +OPTIONS + -S,--ssh-host SSHHOST + Set the ssh host. SSHHOST can be either the full hostname as you would + specify it on the ssh command-line (e.g. [user@]myserver.com or hostname + if it is set up in your ssh config). + + -t,--tunnel TUNNELSPEC + Specify the ports to tunnel as a comma-separated list of either single + ports or port pairs (e.g. -t 443,80:8080 will establish tunnels + local:443-remote:443 and local:8080-remote:80). Note that you have to + be a privileged user (i.e. a user with the CAP_NET_BIND_SERVICE + capability) to be able to bind to ports below 1024. + + -p,--ssh-port SSHPORT /!\ Not implemented + Set the ssh remote port if different from the default. + + -H,--host HOST + Set the tunnel host. HOST can be either the IP or hostname of the + server to tunnel to, as seen from the ssh host. Defaults to localhost. + + -i,--interface IF /!\ Not implemented + Specify the local interface to bind to. Defaults to localhost. Setting + it to 0.0.0.0 will make the tunnel available to other clients on your + network (depending on your firewall rules). + + -f + Fork the script to the background. + + -h,--help + Print this help and exit. +``` diff --git a/proxy-tcp-ssh.sh b/proxy-tcp-ssh.sh index ac30bb4..64be43b 100755 --- a/proxy-tcp-ssh.sh +++ b/proxy-tcp-ssh.sh @@ -199,7 +199,7 @@ function start_and_monitor_tunnels() { # - try again after a timeout if exit code is not 0 # - exit if exit code is 0 # NOTE: for now we just **always** try again after timeout - local timeout_sec=${1:-10} + local timeout_sec=${1:-5} local ntunnels=${#TUNNEL_PORTS_LOCAL[*]} @@ -212,6 +212,8 @@ function start_and_monitor_tunnels() { ssh_tunnel_opt+=("${BIND_IF}:${local_port}:${TUNNEL_HOST}:${remote_port}") done + echo "pid=$$" + while true; do # Try establishing the tunnel echo -n "Starting tunnel... " |