Here is how to set up Sendmail the quick method, but also you may want to also check out the better method for setting up Sendmail. Allowing SMTP (open Port 25) using sendmail On an initial installation of Linux, sendmail blocks smtp and only allows...
Back in 2018 CloudFlare reported massive amplification attacks from UDP port 11211 on a scale never seen before. Zimbra quickly updated their wiki with How to Block Memcache Attack and if you haven’t taken the advice yet, you probably should...
In order to change the SSH port and protocol, you will have to edit sshd_config nano /etc/ssh/sshd_config Change Protocol 2,1 -> to Protocol 2Change #Port 22 -> to some other port and uncomment it Example: Protocol 2 Port 2255 Then restart ssh...