Upon his release, Porter received a lot of interest from several teams. In the end, he signed a five year deal with Miami Dolphins, worth $32 million. During his time with the Dolphins, Porter was named the team captain and was recognized (along with Albert Haynesworth) as the second dirtiest defensive player in the league. The four-time Pro Bowl player was released from the team in March 2010, following a suspension from a game. Days after, he signed a deal worth $24 million with the Arizona Cardinals, in which during this time, he was arrest on suspicion of drunken driving and assaulting a police officer. Porter played his last game in 2011. In February 2014 Porter became a Defensive Assistant coach for the Steelers.