How do I get out of my Helpdesk job and grow if my company doesn’t let me touch anything?

I work for a company who basically keeps me at Helpdesk even though I am supposed to be configuring firewalls and networking equipment. I’ve worked on some of it before so I know what I am doing and can figure it out but I’ve been doing Helpdesk for a year and a half with a total of two years of experience from my old job as well. I want to be a network engineer and I am studying for my CCNA but I don’t have anything at my work to practice on and I don’t have a lot of time after work to learn either. Should I look for another job?