A bash script for routing connections through a gateway machine. You can create symlinks to this script named the same thing as the remote hostnames.

connect.sh

#!/bin/bash

GW="vagrant@localhost"
GW_PORT=2222
GW_NAME="gw"
HOST=${0##*/}

if [ "${HOST}" == "connect.sh" ]
then
	HOST=$1
fi

if [ -z "${HOST}" ]
then
	echo "Please provide a host to connect to."
	exit 1
elif [ "${HOST}" == "${GW_NAME}" ]
then
	ssh -A -t -X -p ${GW_PORT} ${GW}
else
	ssh -A -t -X -p ${GW_PORT} ${GW} "/usr/bin/ssh -t -X -A ${HOST}"
fi

You can create symlinks to this script named the same thing as the remote hostnames that you want to connect to.

$ ln -s connect.sh node2
$ ./node2
Last login: Fri Aug 12 16:45:09 2016 from 172.28.128.1
[vagrant@node2 ~]$ exit
logout
Connection to node2 closed.
Connection to localhost closed.