Dunne was appointed as U's boss in September, but a revival in the team's fortunes has ground to a halt after defeats in five of their last six games.
The Essex club have been left to dwell on their 5-1 trouncing at MK Dons for two weeks due to their break from action, but Dunne is confident the team has a bright future.
He told the East Anglian Daily Times: "This is the birth of a philosophy that should be here forever, and how we want the team to play.
"I'm keen that, when the day comes and I move on, the next manager must believe in the same philosophy in the future."
Dunne continued: "I still believe we can move up the table.
"We have picked ourselves up. We need to turn it around in December, though we have some very difficult games coming up."