add SSH tunneling script

sshtunnel.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+# Allows to access some web UIs through VPN
+
+function sshtunnel {
+  target=$1
+
+  # get occupied ports by SSH sessions
+  local_used_ports=$(lsof -PiTCP -sTCP:LISTEN | grep ssh | awk -F':' '{print $2}' | uniq | grep -Eo '[0-9]{1,5}')
+
+  # define a port
+  local_selected_port=$(shuf -n 1 <(seq 60000 | grep -Fxv -e{$local_used_ports}))
+
+  echo "$target: https://localhost:$local_selected_port"
+  ssh -L $local_selected_port:$target:443 oli@10.7.1.90
+}
+
+sshtunnel $1