sshvia

#!/bin/bash

destport=$(echo $1 | awk -F ':' '{print $2}');
desthost=$(echo $1 | awk -F ':' '{print $1}');
tunnelhost=$2

echo "Connecting to $1 via a tunnel through $2";

if [[ $destport == "" ]]; then
  destport=22;
  echo "Assuming destination port is 22. Specify with 'host:port' if this isn't true..."
fi

if [[ $tunnelport < 1024 ]]; then
  let "tunnelport=$tunnelport + 2000"
fi

echo "Executing: ssh -M -S tunnel-ctl-socket -fnNT -L $tunnelport:$desthost:$destport $tunnelhost"
ssh -M -S tunnel-ctl-socket -fnN -L $tunnelport:$desthost:$destport $tunnelhost
ssh -p $tunnelport localhost
echo "Executing: ssh -S tunnel-ctl-socket -O exit localhost"
ssh -S tunnel-ctl-socket -O exit localhost

Easier way to connect to a host via a tunnel host when you are either using key auth, or can remember to type the passwords in order (tunnel / dest). Not super useful, but for whatever reason I feel it is easier to remember than trying to remember ssh tunneling syntax, haha.