Gareth Seddon was the hero as Kettering came from behind to cause an FA Cup shock by beating visitors Notts County 2-1 on Wednesday night.
Alfie Potter, one of Havant & Waterlooville's FA Cup heroes last season, set the tone for the hosts in the first half of the second-round replay at Rockingham Road, rifling a stinging shot just over.
And Craig Westcarr, once of Nottingham Forest, had a glorious chance to break the deadlock but fired straight at Magpies keeper Russell Hoult from close range.
But two minutes before the break, Jay Smith's thumping 20-yard shot flew past Poppies keeper Lee Harper and in off the underside of the bar.
The hosts refused to roll over though and were level after eight second-half minutes when Brett Solkhon powered his header past Hoult.
And 60 seconds later, Kettering were ahead when Seddon ran on to Westcarr's first-time lay-off and drilled the ball past Hoult into the bottom right-hand corner.
Only a full-stretch Hoult save from substitute Iyseden Christie prevented the Poppies from extending their lead but Kettering held on to reach the third round for the first time in 17 years, where they will host fellow non-leaguers Eastwood.
