#!/usr/bin/expect
set FIRST_HOST="hostname"
set FIRST_USERNAME="myuser"
set FIRST_PASS="mypass"

set SECOND_HOST="hostname"
set SECOND_USERNAME="myuser"
set SECOND_PASSWORD="mypass"

set DMZ="my.dmz"

# connect to FIRST_HOST
spawn ssh -f ${FIRST_USERNAME}@${FIRST_HOST} -L 2201:10.10.10.1:22 -N
expect "*?assword:*"
# send FIRST_PASSWORD
send -- "$FIRST_PASS\r"

# connect to SECOND_HOST
spawn ssh -f ${SECOND_USERNAME}@${SECOND_HOST} -L 2223:${DMZ}:22 -N
expect "*?assword:*"
# send SECONOD PASSWORD
send -- "$SECOND_PASS\r"
expect eof