Leicester City remain unbeaten at home since the return of Nigel Pearson after Paul Gallagher's second-half penalty earned a point against Ipswich.
Foxes keeper Kasper Schmeichel saved Michael Chopra's first-minute penalty, but Lee Bowyer then smashed in shortly after to put Town ahead.
Gallagher levelled from the penalty spot on 69 minutes after Jason Scotland was penalised for handball.
Matt Mills missed the target from close range as City pushed for a winner.
The game hinged on referee Darren Drysdale's decision not to dismiss Leicester full-back Paul Konchesky after just 24 seconds for his challenge on Lee Martin, which saw Ipswich awarded their first penalty of the season.
Konchesky escaped with a warning from Drysdale even though he was the last defender.
Schmeichel pushed Chopra's penalty round the post but Ipswich did not have to wait long to take the lead, going ahead in the fourth minute.
Bowyer lobbed a ball into the box, Leicester failed to clear and the midfielder, who continued the path of his own pass, drove home from six yards.
Referee Drysdale then showed leniency to Ipswich centre-half Ibrahima Sonko, showing the defender only a yellow card for a foul on Jermaine Beckford when he too was the last man.
Gallagher fired the free-kick narrowly wide, while David Nugent saw his six-yard volley well saved by Arran Lee-Barrett as Leicester pushed for an equaliser which eventually came from the spot.
Leicester City manager Nigel Pearson:
"It was a bit frustrating and disappointing to concede a goal so early on.
"The players today were very positive. We pressed them and did everything we could without breaking them down.
"Clearly we have got a lot of work to reach a level of performance where teams don't like coming up against us. I'm still convinced we can make inroads in this league because we have a nucleus of a good side."
Ipswich manager Paul Jewell:
"I thought we worked exceptionally hard. We were sharp and bright and dug in when we had to.
"I thought our performance was excellent. Leicester had plenty of pressure but our keeper only had one real save to make.
"I am tinged with disappointment to draw after taking an early lead, but we have to be happy with a point away from home. It keeps the run going."