[서버] Cent OS-7 설치 및 초기 설정

1. 구분

• DVD ISO 파일
• Everything ISO
• Minimal ISO

 

2. 네트워크 설정

• vi /etc/sysconfig/network-scripts/ifcfg-enpXXX -> ONBOOT=YES, gateway, dns, ...
• systemctl restart network or service network-manager restart
• ip addr

 

3. 네트워크 관련 설치

• yum -y install net-tools bind-tools nmap

 

4. 시간 동기화

• yum -y install rdate
• rdate -s time.bora.net
• timedatectl set-ntp y
• date

 

4. 유저 생성

• adduser -m -u 10001 hwan
• passwd hwan

 

5. ssh 설정

• yum -y install openssh-server openssh-clients openssh-askpass
• vi /etc/ssh/sshd_config
• PermitRootLogin no
• MaxAuthTries 3
• MaxSessions 5
• service sshd start
• service sshd status

 

7. iptables 설정

• yum -y install iptables-services
• systemctl enable iptables
• systemctl start iptables 
• iptables -nL
• iptables -A INPUT -d tcp --dport port -j ACCEPT