Cisco routers by default and/or after erasing the config a) don't have a default password, b) won't let you log in via telnet if there is no password set, and c

Cisco routers by default and/or after erasing the config a) don't have a default password, b) won't let you log in via telnet if there is no password set, and c) do not have SSH enabled. N.B.: I'm referring to BFRs running IOS. I have no idea how the SMB series are configured by default.