Re: [Declude.JunkMail] OT: DNS attacks

2005-08-19 Thread System Administrator
on 8/18/05 3:08 PM, Matt wrote: Agreed on the splitting idea. Keep one DNS firewalled from the outside world and for use just by your clients and their address space, and then another one that only resolves what you host and is open to everyone. I guess I was on the right path. I did change

Re: [Declude.JunkMail] OT: DNS attacks

2005-08-19 Thread Nick Hayer
Morning Dave, That would deny his internal users the ability to resolve external domains. Well you *may* have me on this one :) I do not know what dns server is being used. I use SimpleDNS so I can allow recursion by ip address/subnet. Bind as well does this: [ recurseallow ]

Re: [Declude.JunkMail] OT: DNS attacks

2005-08-19 Thread Matt
Nick, It's not a technical issue regarding recursion, it's an issue of needing recursion for customers, and wanting to block recursion when coming from the outside world where the attacks are coming from. Kevin indicated that BIND can handle doing that on the same server, but AFAIK MS DNS

Re[2]: [Declude.JunkMail] OT: DNS attacks

2005-08-19 Thread Sanford Whiteman
(nor have I heard that SimpleDNS does this either but could be wrong). Simple DNS does allow granular control of recursion by IP. Nick was saying that if the OP were running Simple or Bind, then his (Nick's) suggestion to limit recursion would not mean that the OP would be turning

Re: [Declude.JunkMail] OT: DNS attacks

2005-08-19 Thread Dave Doherty
MS-DNS does not allow this afaik -d - Original Message - From: Nick Hayer To: Declude.JunkMail@declude.com Sent: Friday, August 19, 2005 10:20 AM Subject: Re: [Declude.JunkMail] OT: DNS attacks Morning Dave, That would deny his internal users