Hi,
I run into an issue where a customer couldn't access his firewall via HTTPS and SSH. Somehow management access rules and services got disabled.
Using the console do the following (adjust to your environment & requirements)
configure
set deviceconfig system permitted-ip 10.0.0.0/8
set deviceconfig system service disable-telnet no
set deviceconfig system service disable-http no
set deviceconfig system service disable-ssh no
set deviceconfig system service disable-https no
commit
