Is IPv6 safe to use?
With IPv6, you are not using a NAT (at least most routers aren't setup for a IPv6 NAT), this will reveal your "internal" address. Is this safe?
@datafornothinandbitsforfree - Yeah, eero does a fine job of ensuring that unsolicited traffic is kept out.
What concerns me (or maybe even scares me a little) is that I'm a geek and yet can't give a definitive explanation of how to ensure lock down of IPv6.
For example a Trustwave penetration tester mentions that the different defaults on network firewalling compared to computer firewalling can leak information:
But while the IPv4 address filtered other ports, all unused ports on the IPv6 address are showing up as closed which means the system is actively rejecting connection attempts rather than ignoring them. Most operating systems will reject attempts to connect to unused ports, while most host and network based firewalls are configured to ignore such attempts. Comparing rejected connection attempts versus silently ignored connection attempts often helps in initial reconnaissance.