I am a little white who has just come into contact with the knowledge of network security. A strange thing happened today.
The Ethernet card that used to be able to access the Internet can’t access the Internet today. After some attempts, only win10 system can access the Internet. Linux, such as CentOS, can’t get online. No packet capturing network is sent out with Wireshark, only ICMP sends it to itself.
I doubt it’s about network card hardware. Do you have any suggestions