nanog mailing list archives
Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations
From: Florian Weimer <fw () deneb enyo de>
Date: Mon, 18 Apr 2005 21:45:54 +0200
* Jason Frisvold:
I think this is more of a question of who to trust. Caching, in general, isn't a bad thing provided that TTL's are adhered to. If the poisoning attack were to inject a huge TTL value, then that would compromise that cache. (Note, I am no expert on dns poisoning, so I'm not sure if the TTL is "attackable")
I'm not sure if you can poison the entire cache of a stub resolver (which can't do recursive lookups on its own). I would expect that the effect is limited to a particular DNS record, which in turn should expire after the hard TTL limit (surely there is one).
Current thread:
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations, (continued)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Patrick W. Gilmore (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Eric Louie (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Daniel Golding (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Jason Frisvold (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Mikael Abrahamsson (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Florian Weimer (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Jason Frisvold (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Matthew Sullivan (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Randy Bush (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Rachael Treu Gomes (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Florian Weimer (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Peter & Karin Dambier (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations Tony Rall (Apr 18)
- Re: Jonathan Yarden @ TechRepublic: Disable DNS caching on workstations JC Dill (Apr 19)