I'm a newbie with ipfw, trying to learn it and testing its commands on the server with FreeBSD. Every time when I run ipfw command via SSH with a syntax error/typo and then restart ipfw service, the server becomes blocked for me and I can't work with it via SSH. Even if there is no any ipfw rule to deny traffic to my computer. And I'm forced to ask the main administrator to unblock my server.
Is there a way to test ipfw without such server/SSH blocking? Or if I would install/deploy the server locally on my computer, could I unblock the server by myself in the case of ipfw error?