This is a customer requirement, as the SBC will be deployed within their network. Therefore, they have requested us to perform OS hardening.I'm not sure what you need this for. There is no guest account, the passwords for SSH and root are in your hands. The SBC is also not publicly accessible.
Founded in 2005, when VoIP was an emerging technology, 3CX has gone on to establish itself as a global leader in business communications.