The Timbers coach, who led the All-Stars to victory Wednesday, was thrilled with his club's impressive form against the Goats.
The result marks Portland's second Major League Soccer shutout of the season - both coming against the Goats - and the Timbers boss was especially pleased with the defensive improvement.
"The goal was to get two goals or more, get a clean sheet," Porter said after the game. "Prior to this game - we know points are crucial - we've been scoring goals, we haven't been defending well enough as a team.
"The first half especially, and even second half, the way we kind of shut things down, I thought it was our most complete defensive performance. I thought Liam Ridgewell was an absolute animal. I thought he was man of the match.
"You had good performances across the board, it was maybe our best first half of the year. I thought we were completely dominant. I thought our pressure was suffocating. I can't remember any clear chances and I thought we were all over them."
Portland has now won three of its last four MLS games and is tied on points with Colorado for the last playoff position, trailing only by goal difference.