시간 자동설정

[root@localhost ~]#  rdate -s time.bora.net

[root@localhost ~]# nmtui
시스템 재시작
[root@localhost ~]# systemctl restart network

 

 

 

[root@localhost ~]# ifdown ens32
장치 'ens32'의 연결이 성공적으로 해제되었습니다.
[root@localhost ~]# ifup ens32
연결이 성공적으로 활성화되었습니다 (D-Bus 활성 경로: /org/freedesktop/NetworkManager/ActiveConnection/4)
[root@localhost ~]# 

 

[root@localhost ~]# nslookup
> server
Default server: 192.168.111.2
Address: 192.168.111.2#53
> www.naver.com
Server:        192.168.111.2
Address:    192.168.111.2#53

Non-authoritative answer:
www.naver.com    canonical name = www.naver.com.nheos.com.
Name:    www.naver.com.nheos.com
Address: 202.179.177.22
Name:    www.naver.com.nheos.com
Address: 202.179.177.21
> exit

=== ping 네트워크가 정상적인지 확인 , 그러나 네이버는 안된다.
[root@localhost ~]# ping www.yahoo.com

 

 

 

[root@localhost ~]# cat /etc/sysconfig/network
# Created by anaconda
[root@localhost ~]# 

[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens32 
[root@localhost ~]# systemctl restart network
[root@localhost ~]# ping -c 3 www.yahoo.com

[root@localhost ~]# cat /etc/resolv.conf 
# Generated by NetworkManager
nameserver 192.168.111.2
[root@localhost ~]# 

[root@localhost ~]# vi /etc/resolv.conf 
# Generated by NetworkManager
nameserver 192.168.111.2

~                                                                               
=>== DNS 서버 ,만약 DNS 서버가 없으면 
== KT 에서 제공하는 nameserver 168.126.63.1 를 사용

# Generated by NetworkManager
nameserver 168.126.63.1

=>일시적인 변경임 영속적인 변경은
=>[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens32 로 변경

[root@localhost ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

 

 

 

 

 

[root@localhost ~]# cat /etc/sysconfig/selinux 

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
#SELINUX=enforcing
# SELINUXTYPE= can take one of three two values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected. 
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted