New Versions of BIND Are Available

2013-11-06 Thread Michael McNally
In connection with CVE-2013-6320, which corrects a possible security vulnerability on Windows versions of BIND, new releases are available at http://www.isc.org/downloads - 9.9.4-P1 - 9.8.6-P1 - 9.6-ESV-R10-P1 The official announcement for this vulnerability has been sent to the bind-ann

Re: RRL probably not useful for DNS IP blacklists, was Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-24 Thread Tony Finch
Simon Forster wrote: > > Excellent info. Thank you. What's the specs of the machine you're testing on? An old-ish Dell Optiplex 760, Core 2 Duo, 3.16 GHz, 4GB RAM. Tony. -- f.anthony.n.finchhttp://dotat.at/ Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at first. Rough,

Re: RRL probably not useful for DNS IP blacklists, was Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-23 Thread Simon Forster
On 23 Sep 2013, at 19:24, Tony Finch wrote: > Simon Forster wrote: >> >> As a matter of interest, if one had a DNSBL with 5.5 million entries >> (i.e. 5.5 million IPs): >> >> 1) What needs to be done to rewrite that to a BIND zone? >> 2) What sort of machine would be required to load that zon

Re: RRL probably not useful for DNS IP blacklists, was Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-23 Thread Tony Finch
Simon Forster wrote: > > As a matter of interest, if one had a DNSBL with 5.5 million entries > (i.e. 5.5 million IPs): > > 1) What needs to be done to rewrite that to a BIND zone? > 2) What sort of machine would be required to load that zone? > 3) How long would it take to load into BIND? I did

Re: RRL probably not useful for DNS IP blacklists, was Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-23 Thread Simon Forster
On 23 Sep 2013, at 15:59, Vernon Schryver wrote: >> From: Eliezer Croitoru > >>> Major DNSBL providers have years since limited anonymous clients for >>> business or other reasons. For example, I think Spamhaus limits >>> anonymous clients to fewer than 3 queries/second. > >> and I doubt the

Re: RRL probably not useful for DNS IP blacklists, was Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-23 Thread Chris Buxton
On Sep 23, 2013, at 7:59 AM, Vernon Schryver wrote: > From: Eliezer Croitoru > >> I was looking for something like that but I am sure a dynamic DB is >> needed for the task right? > > Large DNSBLs are not very dynamic, because they have relatively few > changes per day. From another perspect

Re: RRL probably not useful for DNS IP blacklists, was Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-23 Thread Vernon Schryver
> From: Eliezer Croitoru > > Major DNSBL providers have years since limited anonymous clients for > > business or other reasons. For example, I think Spamhaus limits > > anonymous clients to fewer than 3 queries/second. > and I doubt they use RRL in the application level.. > I assume they limi

Re: RRL probably not useful for DNS IP blacklists, was Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-22 Thread Eliezer Croitoru
On 09/20/2013 05:12 PM, Vernon Schryver wrote: > The potential RRL problem is when you provide high volume DNSBL service > over the open Internet to DNS clients that are not authenticated. > However, that is unlikely to be a worry, because providing DNSBL > services over the open Internet is dubiou

Re: RRL probably not useful for DNS IP blacklists, was Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-21 Thread Noel Butler
On Fri, 2013-09-20 at 14:12 +, Vernon Schryver wrote: > > From: Shane Kerr > > > With a 50% packet loss and 3 retries you'll have about 1 in 16 lookups > > fail, right? If you've got enough legitimate lookups going on to > > trigger RRL then you're going to get lots of failures. > > If 6% i

Re: RRL probably not useful for DNS IP blacklists, was Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-20 Thread Vernon Schryver
> From: Shane Kerr > With a 50% packet loss and 3 retries you'll have about 1 in 16 lookups > fail, right? If you've got enough legitimate lookups going on to > trigger RRL then you're going to get lots of failures. If 6% is "lots", then yes. > One workaround for this is to set SLIP to 1. I kn

Re: RRL probably not useful for DNS IP blacklists, was Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-20 Thread Noel Butler
Hi Shane, On Fri, 2013-09-20 at 11:38 +0200, Shane Kerr wrote: > Noel, > > On 2013-09-20 12:48:31 (Friday) > Noel Butler wrote: > > > On Fri, 2013-09-20 at 01:59 +, Vernon Schryver wrote: > > > > > plenty of delayed mail - hostname lookup failures (mostly because of > > > > URI/DNS BL's),

RRL probably not useful for DNS IP blacklists, was Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-20 Thread Shane Kerr
Noel, On 2013-09-20 12:48:31 (Friday) Noel Butler wrote: > On Fri, 2013-09-20 at 01:59 +, Vernon Schryver wrote: > > > plenty of delayed mail - hostname lookup failures (mostly because of > > > URI/DNS BL's), so it certainly works as intended :) > > > > That sounds unrelated to RRL. Agai

Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-19 Thread Noel Butler
On Fri, 2013-09-20 at 01:59 +, Vernon Schryver wrote: > > From: Noel Butler > > > now, I never ran it as patches, my policy is only use official upstream > > sources, so my first play around was with 9.9.3.b2 I think it was. > > BIND 9.9.4 and its immediately preceding "beta" and "release >

Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-19 Thread Vernon Schryver
> From: Noel Butler > now, I never ran it as patches, my policy is only use official upstream > sources, so my first play around was with 9.9.3.b2 I think it was. BIND 9.9.4 and its immediately preceding "beta" and "release candidate" releases are the first versions of BIND that were not "patche

Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-19 Thread Noel Butler
Hi Vernon, On Thu, 2013-09-19 at 23:42 +, Vernon Schryver wrote: > BIND RRL has had whitelisting for trusted DNS clients that send repeated > DNS requests since early days, long before any version of BIND 9.9.4. > Look for 'exempt-clients{address_match_list};' in either the ARM that > comes w

Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-19 Thread Noel Butler
On Thu, 2013-09-19 at 23:40 +, Evan Hunt wrote: > On Fri, Sep 20, 2013 at 09:20:29AM +1000, Noel Butler wrote: > > I have been using this since 9.9.4bx, and although documentation is/was > > lacking at the time, so there might be a whitelisting somewhere , but in > > its absence, I highly advi

Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-19 Thread Vernon Schryver
> From: Noel Butler > I have been using this since 9.9.4bx, and although documentation is/was > lacking at the time, so there might be a whitelisting somewhere , but in > its absence, I highly advise against using RRL if your mail servers use > those DNS servers I believe there been no significa

Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-19 Thread Evan Hunt
On Fri, Sep 20, 2013 at 09:20:29AM +1000, Noel Butler wrote: > I have been using this since 9.9.4bx, and although documentation is/was > lacking at the time, so there might be a whitelisting somewhere , but in > its absence, I highly advise against using RRL if your mail servers use > those DNS ser

Re: New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-19 Thread Noel Butler
On Thu, 2013-09-19 at 16:04 -0700, Michael McNally wrote: > New versions of BIND are now available from http://www.isc.org/downloads > New Features 9.9.4 Added Response Rate Limiting (RRL) functionality to reduce the effectiveness of DNS as an amplifier for reflected denial-of-service

New Versions of BIND are available (9.9.4, 9.8.6, and 9.6-ESV-R10)

2013-09-19 Thread Michael McNally
New versions of BIND are now available from http://www.isc.org/downloads See the messages in bind-announce announcing BIND 9.9.4, 9.8.6, and 9.6-ESV-R10 or read the release notes in the ISC Knowledge Base ( https://kb.isc.org/category/81/0/10/Software-Products/BIND9/Release-Notes/ ) for more in