Peterborough twice fought back from going behind to deny struggling Barnet a much-needed victory.
Andy Hessenthaler volleyed the Bees ahead from six yards after Posh defender Mark Arber failed to clear.
Liam Hatch and Simon Clist both went close soon for the visitors before Danny Crow's lob put Posh level.
Dean Sinclair's back-heel teed up Barry Fuller to restore Barnet's lead but substitute Richard Logan scored from Ryan Semple's corner to equalise again.
Peterborough: Tyler, St. Ledger, Bolland, Arber, Kennedy, Semple, Carden, Gain, Day (Farrell 83), Kuqi (Logan 54), Crow.
Subs Not Used: Newton, Harrison, Fry.
Booked: Bolland, Carden.
Goals: Crow 53, Logan 75.
Barnet: Flitney, Fuller, King, Yakubu, Charles, Sinclair, Bailey, Lee, Hessenthaler (Vernazza 83), Clist, Hatch.
Subs Not Used: Strevens, Batt, Soares, Reed.
Booked: Lee, Clist, King, Vernazza.
Goals: Hessenthaler 10, Fuller 70.
Ref: D Whitestone (Northamptonshire).