Centos-7

Hostname ändern

• hostnamectl set-hostname saul.xinux.org

Extra Packages for Enterprise Linux (EPEL) repository

• yum install epel-release

Centos Network

• centos network

Firewall-cmd

• Firewall-cmd

Ssh port ändern

selinux

• selinux
• semanage port -a -t ssh_port_t -p tcp 2292

ssh port ändern

/etc/ssh/sshd/config 
PORT 8472 

• systemctl restart sshd

Network Security

• http://wiki.centos.org/HowTos/Network/SecuringSSH