Mmastodon TechnologyCybersecurity first seen 1 d ago, last 1 d ago, peak #8
Windows IPv4-preference registry key fails against DHCPv6 spoofing
Original: Der Registry-Schlüssel „Prefer IPv4 over IPv6“ schützt nicht vor DHCPv6-Spoofing. Das zeigen unsere Pentests. ❌ Am beste
Security firm HISolutions reports that penetration tests show the Windows registry setting 'Prefer IPv4 over IPv6' does not protect against DHCPv6 spoofing attacks. They recommend deploying RA Guard and DHCPv6 Guard on all switches instead; where that is unavailable, disabling both DHCPv6 and router discovery directly on hosts is advised.
Why now: A security vendor is warning admins that a common mitigation is ineffective, prompting network teams to review their IPv6 defenses.
HISolutionsDHCPv6RA GuardDHCPv6 Guard
Evidence
- Der Registry-Schlüssel „Prefer IPv4 over IPv6“ schützt nicht vor DHCPv6-Spoofing. Das zeigen unsere Pentests. ❌ Am besten helfen RA Guard und DHCPv6 Guard auf allen Switches. Gibt es die nicht, schalten Sie DHCPv6 und Router Discovery auf den Hosts ab. Und zwar beides, sonst… · hisolutions@infosec.exchange · 2
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