He has been described in court as "a white knight" who came to the aid of his female neighbour while she was being threatened by her boyfriend and eight of his friends.

But father-of-three Nou Loeung, who has never been in trouble with the law, is facing a murder charge following a brawl in the driveway of his Bonnyrigg home on February 12.

Nou Loeung (centre) is released on bail from Silverwater Correctional Complex. Credit:Wolter Peeters

In yet another case that will test the legal limits of self-defence in NSW, the 33-year-old mobile phone technician was granted bail on Thursday after NSW Supreme Court Justice Stephen Campbell acknowledged it was 'entirely possible' that a jury will find that Mr Loeung was heroically defending his neighbour, his wife, his children, his home and himself when he allegedly stabbed Ly Xuan Ho, 26.

Police did not oppose bail, however the Crown said questions will be raised about whether Mr Loeung could have called the police rather than grab a hunting knife as a group of nine men came towards his home just after 10.30pm.