On Sat, Feb 25, 2006 at 08:41:01AM +0000, bmanning@vacation.karoshi.com wrote:
robt wrote: [snip]
Limit recursion to trusted netblocks and customers. Do not permit your name servers to provide recursion for the world. If you do, you will contribute to one of these attacks.
<recursion is a fundamental DNS design feature, restricting it to "walled gardens" cripples its usefullness>
The bad guys abused open SMTP relaying and we couldn't use it anymore.* They've moved to the next thing that is widely open and will be abusable for a long time while some folks clamp down quickly, others argue against it, etc. Until we can factor out the bad guys, the diminishing returns on playing whack-a-mole will force us all to install more functional equivalent of signs saying "restrooms are for customers only". And no I don't like it either. Cheers, Joe * well, except those who wish to be marginalized. -- RSUC / GweepNet / Spunk / FnB / Usenix / SAGE