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The first two would be on, unless you specifically turned it off but:

Selinux:

sudo getenforce

Should say “enforcing”

Firewalld

sudo systemctl status firewalld

Look for “active (enabled)”

sshd:

sudo systemctl status sshd

Again look for “active (enabled)”

For that, stop and disable with:

sudo systemctl disable sshd sudo systemctl stop sshd