nanog mailing list archives
Re: using "reserved" IPv6 space
From: Jimmy Hess <mysidia () gmail com>
Date: Sat, 14 Jul 2012 17:37:37 -0500
On 7/14/12, valdis.kletnieks () vt edu <valdis.kletnieks () vt edu> wrote: [snip]
The fact that your prefix is a Secret Sauce that isn't known to the rest of the world won't matter much to an attacker. One 'ifconfig' on whatever beachhead machine the attacker has inside your net, and it's not Secret Sauce anymore, it's just another bottle of Thousand Island dressing...
The good news is one 'ifconfig' just tells them what network address you're in. Unless the attacker can gain access to your host's NDP table or ARP table, they can't see what IPs are in use. You're Global or whatever /64 has ~18446744073709551615 possible IP addresses. If you want your addressing assignments to be "obscure", generate a random interface ID, and use that to assign your IPv6 addresses within your public /64, or just use stateless autoconfig. -- -JH
Current thread:
- Re: using "reserved" IPv6 space, (continued)
- Re: using "reserved" IPv6 space Randy Bush (Jul 14)
- RE: using "reserved" IPv6 space Tony Hain (Jul 14)
- Re: using "reserved" IPv6 space Randy Bush (Jul 14)
- Re: using "reserved" IPv6 space Grzegorz Janoszka (Jul 15)
- Re: using "reserved" IPv6 space Scott Morris (Jul 15)
- Re: using "reserved" IPv6 space Cameron Byrne (Jul 15)
- Re: using "reserved" IPv6 space Grzegorz Janoszka (Jul 15)
- Re: using "reserved" IPv6 space Mike Jones (Jul 15)
- Re: using "reserved" IPv6 space Owen DeLong (Jul 15)
- Re: using "reserved" IPv6 space Scott Morris (Jul 15)
- Re: using "reserved" IPv6 space Jimmy Hess (Jul 14)
- Re: using "reserved" IPv6 space valdis . kletnieks (Jul 15)
- Re: using "reserved" IPv6 space Adrian Bool (Jul 13)
- Re: using "reserved" IPv6 space -Hammer- (Jul 13)
- Re: using "reserved" IPv6 space TJ (Jul 13)
- Re: using "reserved" IPv6 space Jean-Francois . TremblayING (Jul 13)
- Re: using "reserved" IPv6 space TJ (Jul 13)
- Re: using "reserved" IPv6 space Jean-Francois . TremblayING (Jul 13)
