/ 레드햇

9.9 Using Network Analysis Tools

레드햇 rhcsa dig command host command Network Analysis
https://4am.kr/9-9-using-network-analysis-tools/
hostname, ping, traceroute, dig, nmap, netstat -i, netstat -tulpen


ip addr show

ip route show

cat /etc/resolv.conf

ping -c 1 10.10.10.10

ping -f 10.10.10.10

traceroute 8.8.8.8

host 4am.kr

dig 4am.kr

dns 변경을 위해서는
vim /etc/sysconfig/network-scripts/ifcfg-enoXXX

systemctl restart NetworkManager

cd /etc/sysconfig/network-scripts/

nmcli conn down testing

ip route show 

!di

dig wdddd.4am.kr

ip -s link (물리적인 경우 유용)