Re: [Pdns-users] DDos Reflector

2009-01-21 Thread Augie Schwer
On Mon, Jan 19, 2009 at 11:41 AM, Christof Meerwald wrote: > Is there anything a DNS server/PowerDNS can do to avoid being used as a DDoS > reflector, like rate-limiting SERVFAILs per IP address? What's the general > opinion? For this particular attack you could set "send-root-referral=no"; that

Re: [Pdns-users] DDos Reflector

2009-01-19 Thread Leen Besselink
Leen Besselink wrote: Christof Meerwald wrote: Hi, since about Friday late evening I am seeing lots of pdns errors in my syslog like: Not authoritative for '', sending servfail to 76.9.31.42 (recursion was desired) Over in comp.protocols.dns.bind there is already some discussion about

Re: [Pdns-users] DDos Reflector

2009-01-19 Thread Leen Besselink
Christof Meerwald wrote: Hi, since about Friday late evening I am seeing lots of pdns errors in my syslog like: Not authoritative for '', sending servfail to 76.9.31.42 (recursion was desired) Over in comp.protocols.dns.bind there is already some discussion about these DNS requests (which

[Pdns-users] DDos Reflector

2009-01-19 Thread Christof Meerwald
Hi, since about Friday late evening I am seeing lots of pdns errors in my syslog like: Not authoritative for '', sending servfail to 76.9.31.42 (recursion was desired) Over in comp.protocols.dns.bind there is already some discussion about these DNS requests (which apparently use a spoofed so