Cardiff boss Malky Mackay was left frustrated by the draw with Millwall, while Kenny Jackett was content with the point.
The Bluebirds were held to their fourth successive draw as they failed to close the gap on their promotion rivals
Mackay was unhappy with referee Tony Bates' decision to rule out Aron Gunnarsson's second half header for a push on Millwall's Jimmy Abdou as his side had to settle for a point.
"It is very frustrating and bitterly disappointing because for the third time this season a linesman has disallowed a perfectly legal goal," bemoaned Mackay.
"When they see the DVD they will see it's an embarrassing and horrendous decision.
"Gunnarsson only has his eyes on the ball and their player pulls him down for (what should have been a) penalty.
"Everyone has said the same."
Millwall chief Jackett admitted he would have taken a point before the game and praised his players for their performance.
"It was a good point and we would have taken that before the game," noted Jackett. "It was a very spirited performance by ourselves.
"We played two up front and tried to counter-attack. We knew Cardiff would have a lot of the ball and we had to be brave.
"It nearly worked out for us at the end when we had chances. I'm pleased with a point."
Prior to kick-off, there was a minute's applause in honour of Millwall's record appearance holder Barry Kitchener who died on Friday from cancer.
Jackett added: "On behalf of the club, our thoughts and condolences are with the family. He was well thought of and well spoken about at the club."