Unsecured Tunneling Protocols Expose 4.2 Million Hosts, Including VPNs and Routers

New research reveals security vulnerabilities in tunneling protocols, exposing 4.2 million hosts, including VPN servers and routers, to potential hijacking and abuse. Attackers can exploit these vulnerabilities to perform anonymous attacks, conduct denial-of-service (DoS) attacks, and gain access to private networks. Mitigation strategies include using IPSec or WireGuard for authentication and encryption, and implementing traffic filtering and DPI on routers.