Hector Kyprianou gave hosts Peterborough the lead in the 21st minute but Omar Beckles levelled for Orient 13 minutes later.
David Lowndes took pictures of just some of the fans who were there in this gallery.
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1. Posh 1 Orient 1
Peterborough United fans watch the draw with Leyton Orient. Photo: David Lowndes
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Peterborough United fans watch the draw with Leyton Orient. Photo: David Lowndes
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Peterborough United fans watch the draw with Leyton Orient. Photo: David Lowndes
4. Posh 1 Orient 1
Peterborough United fans watch the draw with Leyton Orient. Photo: David Lowndes