nanog mailing list archives
Re: Using IPv6 with prefixes shorter than a /64 on a LAN
From: Fernando Gont <fernando () gont com ar>
Date: Tue, 25 Jan 2011 22:12:22 -0300
On 25/01/2011 11:44 a.m., Ray Soucy wrote:
The argument can also be made that using smaller prefixes with sequential host numbering will lead to making network sweeps and port scanning viable in IPv6 where it would otherwise be useless. At that point you just need evidence of one IPv6 address being in use and you know that a few hundred next to it have the interesting hosts connected.
Sequential host numbering is already being used, despite of the prefix lengths in use. Also, the claim that "IPv6 address scanning is impossible" is generally based on the (incorrect) assumption that host addresses are spread (randomly) over the 64-bit IID. -- But they usually aren't. Thanks, -- Fernando Gont e-mail: fernando () gont com ar || fgont () acm org PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1
Current thread:
- RE: Using IPv6 with prefixes shorter than a /64 on a LAN, (continued)
- RE: Using IPv6 with prefixes shorter than a /64 on a LAN Mikael Abrahamsson (Jan 25)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Owen DeLong (Jan 26)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Owen DeLong (Jan 25)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Leen Besselink (Jan 30)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Laurent GUERBY (Jan 30)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Owen DeLong (Jan 30)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Valdis . Kletnieks (Jan 30)
- RE: Using IPv6 with prefixes shorter than a /64 on a LAN George Bonser (Jan 30)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Fernando Gont (Jan 25)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Ray Soucy (Jan 25)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Fernando Gont (Jan 25)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Roland Dobbins (Jan 25)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Jimmy Hess (Jan 25)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Roland Dobbins (Jan 25)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Fernando Gont (Jan 25)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Owen DeLong (Jan 26)
- Re: Using IPv6 with prefixes shorter than a /64 on a LAN Fernando Gont (Jan 26)