NAT 구성 등을 위한 가상 인터페이스를 추가하는 방법을 설명알아보자.
인터페이스 정보 확인
[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.192.252 netmask 255.255.255.0 broadcast 192.168.192.255
inet6 fe80::6d05:37d3:fb10:5b25 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:67:a4:a6 txqueuelen 1000 (Ethernet)
RX packets 411 bytes 36267 (35.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 329 bytes 31013 (30.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 96 bytes 8376 (8.1 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 96 bytes 8376 (8.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
가상 인터페이스 생성
물리 인터페이스를 공유할 인터페이스 생성
ens33의 물리 NIC를 사용할 경우 ens33:0으로 생성한다.
[root@localhost ~]# cp /etc/sysconfig/network-scripts/ifcfg-ens33 /etc/sysconfig/network-scripts/ifcfg-ens33:0 [root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33:0 TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=static DEFROUTE=yes IPV4_FAILURE_FATAL=no # 인터페이스 명과 장치명이 겹치지 않도록 수정한다. NAME=ens33:0 DEVICE=ens33:0 ONBOOT=yes # 사용하고 싶은 IP로 변경한다. IPADDR=192.168.192.253 PERFIX=24 GATEWAY=192.168.192.254
확인
[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.192.252 netmask 255.255.255.0 broadcast 192.168.192.255
inet6 fe80::6d05:37d3:fb10:5b25 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:67:a4:a6 txqueuelen 1000 (Ethernet)
RX packets 1046 bytes 93843 (91.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 703 bytes 78865 (77.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens33:0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.192.253 netmask 255.255.255.0 broadcast 192.168.192.255
ether 00:0c:29:67:a4:a6 txqueuelen 1000 (Ethernet)
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 104 bytes 9080 (8.8 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 104 bytes 9080 (8.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
인터페이스 정보를 확인하고 연결이 되는지 확인한다.
Windows PowerShell Copyright (C) Microsoft Corporation. All rights reserved. PS C:\Users\haedong> ssh haedong@192.168.192.253 The authenticity of host '192.168.192.253 (192.168.192.253)' can't be established. ECDSA key fingerprint is SHA256:en-----------------------0s3gUedMt8. Are you sure you want to continue connecting (yes/no/[fingerprint])?