How did Michael Garibaldi have the money to quit his job in Babylon 5 and become jobless?

Question

After Babylon 5 drove away the Shadows and Vorlons, Garibaldi resigned from his job because he was unhappy with Sheridan. Unlike Star Trek, money still matters quite a bit in Babylon 5.

Like any human on Earth today, a person needs to have lots of money to show the middle finger to his boss and quit without a job. Even if Garibaldi is rich, most of his assets would probably have been frozen or confiscated by the Earth government when Babylon 5 rebelled against Earth government. He is most likely poor after the rebellion.

How does he have the means to give Sheridan the middle finger and walk away without a job?

Answer 1

The episode Conflicts of Interest answers this. In order to support himself, Garibaldi has been operating as a licensed Private Detective. He's also been using his station ID and computer access to help him solve cases.

Client: Three weeks, Garibaldi, since I asked you to help find my daughter. I haven't been able to eat or sleep since we were separated during the raid on the Aris Colony. All I get from you is silence, except when you want more money or information.

and

Garibaldi: Come on, Zack, this is me. I'm running a private investigation company.

Later in the same episode he helps a client get onto the station without registering with customs and acts as their bodyguard.