Secure SSH


1 – Edit sshd_config file
vi /etc/ssh/sshd_config

# Allow only listed users
AllowUsers adam bob carl

# SSH port
Port 22

# Deny root login
PermitRootLogin no

# Deny login without password
PermitEmptyPasswords no

View expiration date of DNSSEC signature

  dig SOA yourdomain.com @nameserver +dnssec  

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