We have windows network. From last 5 days we are facing different kind of issue. Our comapany network and the internet down for no reason.
when I tracked the problem I figured out that arp spoofing all over network. We have formatted suspicious systems but still we face this issue. We also with checking and testing with wireshark application. When we formatted suspicious systems and again wireshark application with new suspicious systems. We have physical firewall and antivirus in every system.
Please suggest any lead to follow and resolve the issue.