StrictModes is a security guard that may refuse a login attempt Should the authentication files are readable by Anyone. To alter the port that the SSH daemon listens on, you'll have to log in towards your remote server. Open up the sshd_config file around the remote program with root privileges, https://sethpuybd.blogoxo.com/30010186/how-much-you-need-to-expect-you-ll-pay-for-a-good-servicessh