Re: bind autosign - DS distribution

2010-12-09 Thread Kevin Oberman
> From: Chris Buxton 
> Date: Thu, 9 Dec 2010 21:16:41 -0800
> Sender: bind-users-bounces+oberman=es@lists.isc.org
> 
> 
> On Dec 9, 2010, at 2:26 PM, Matus UHLAR - fantomas wrote:
> 
> > Is it possible(planned) for bind to sign slave zone?
> > And, are incremental updates possible with dnssec?
> > 
> > I'm thinking about hidden master bind loading (un)signed zones and providing
> > axfr/ixfr to our public servers
> 
> Secure64 makes a product that does this.
> 
> - The hidden master creates/updates an unsigned zone.
> - Secure64 appliance acts as a slave, transferring the zone in
> response to notify messages. It then signs the zone, including
> auto-generating and auto-rotating keys as needed (I believe).
> - Secure64 appliance then acts as a second hidden master, replicating
> the zone out to the regular slaves.
> 
> I believe it's implemented using two instances of nsd (from NLnet
> Labs), one acting as a slave and another acting as a primary master,
> with some proprietary code in between.
> 
> http://www.secure64.com/automated-DNSSEC-signer-software-appliance
> 
> Note: You hinted that the unsigned zone content is generated by some
> process that would be difficult to modify. Products from my employer
> and our other competitors would not have as easy a time handling that
> type of need as this off-the-shelf product from Secure64. If that is
> not the case, however, I would be happy to talk to you about DNSSEC
> solutions from BlueCat Networks.

Your description is pretty close. The main exception is that it only
runs a single instance of nsd. It acts as both client and server. When
it updates a zone, it then signs the data and sends out notifies to the
slaves which publicly serve the data. No need for two instances.

I believe the real claim to fame of Secure64 is the security of the
private keys. The system is FIPS140-2 level 2 certified and that is hard
to come by, especially without an HSM. This is very nice of dynamic
updates are required since most solutions require an HSM or store the
private key in an on-line system.
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: ober...@es.net  Phone: +1 510 486-8634
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Re: bind autosign - DS distribution

2010-12-09 Thread Chris Buxton

On Dec 9, 2010, at 2:26 PM, Matus UHLAR - fantomas wrote:

> Is it possible(planned) for bind to sign slave zone?
> And, are incremental updates possible with dnssec?
> 
> I'm thinking about hidden master bind loading (un)signed zones and providing
> axfr/ixfr to our public servers

Secure64 makes a product that does this.

- The hidden master creates/updates an unsigned zone.
- Secure64 appliance acts as a slave, transferring the zone in response to 
notify messages. It then signs the zone, including auto-generating and 
auto-rotating keys as needed (I believe).
- Secure64 appliance then acts as a second hidden master, replicating the zone 
out to the regular slaves.

I believe it's implemented using two instances of nsd (from NLnet Labs), one 
acting as a slave and another acting as a primary master, with some proprietary 
code in between.

http://www.secure64.com/automated-DNSSEC-signer-software-appliance

Note: You hinted that the unsigned zone content is generated by some process 
that would be difficult to modify. Products from my employer and our other 
competitors would not have as easy a time handling that type of need as this 
off-the-shelf product from Secure64. If that is not the case, however, I would 
be happy to talk to you about DNSSEC solutions from BlueCat Networks.

Chris Buxton
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Re: bind autosign - DS distribution

2010-12-09 Thread fakessh @
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Le 10.12.2010 00:24, Matus UHLAR - fantomas a écrit :
> On 09.12.10 23:45, fakessh @ wrote:
>> webmin implement the mecanism of resign  zones
> 
> good to know, but our system fille DNS data using some automatic processes
> from more sources and I don't think they should use webmin for that ;)
> 


look the source for the construct a perl script
webmin is build with modules
its easy i think


sincerely
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Re: DiG 9.3.6-P1 segfaults on CentOS

2010-12-09 Thread Brian Keefer
On Dec 9, 2010, at 4:20 PM, Mark Andrews wrote:

> 
> In message , Brian Keefer 
> write
> s:
>> Downloading the tarball for bind-9.7.2-P1 from ftp.isc.org and building it fr
>> om source fixed the segfault issue.
>> 
>> I'm still seeing a (possibly related) issue where if I do dig +trace txt > bl record> it takes 6-10 seconds (measured by time(1)) to complete, all after
>> printing the authoritative server for DNSBL (prior to printing answer).
>> 
>> If I do dig @ txt  I get the same pause. If I d
>> o dig @ txt  there is no pause.  There is also no pau
>> se if I do dig .  It doesn't look like there's any issue reso
>> lving the A RR, so why the long pause with dig +trace or dig @hostname vs. di
>> g @IP?
> 
> And if you look for IPv6 addresses?
> 
>   dig  

That's exactly it.  I just figured that out by looking at the PCAP a minute 
before I read your e-mail.  It's silently ignored.  Mystery solved on the delay.

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Re: DiG 9.3.6-P1 segfaults on CentOS

2010-12-09 Thread Mark Andrews

In message , Brian Keefer write
s:
> Downloading the tarball for bind-9.7.2-P1 from ftp.isc.org and building it fr
> om source fixed the segfault issue.
> 
> I'm still seeing a (possibly related) issue where if I do dig +trace txt  bl record> it takes 6-10 seconds (measured by time(1)) to complete, all after
>  printing the authoritative server for DNSBL (prior to printing answer).
> 
> If I do dig @ txt  I get the same pause. If I d
> o dig @ txt  there is no pause.  There is also no pau
> se if I do dig .  It doesn't look like there's any issue reso
> lving the A RR, so why the long pause with dig +trace or dig @hostname vs. di
> g @IP?

And if you look for IPv6 addresses?

dig  
 
> I'm only getting this behavior with this particular DNSBL, so far as I know. 
> The DNSBL runs a modified (only the back-end, SFAIK) version of rbldnsd.
> 
> --
> bk
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Re: DiG 9.3.6-P1 segfaults on CentOS

2010-12-09 Thread Brian Keefer

On Dec 9, 2010, at 1:16 PM, Brian Keefer wrote:

> This issue was initially reported to me by a customer running CentOS 5.5 
> x86_64.  I was able to duplicate it on CentOS 5.5 i386 with dig version:
> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2
> 
> When doing a dig +trace to a DNSBL for a TXT record they're getting a 
> segfault after making the final query (prior to displaying the answer).  I 
> did a tcpdump of this behavior and saw two identical queries from the same 
> source port with the same transaction ID 0.74 seconds apart.  The 
> responses were received 0.000745 seconds apart, from the same IP with the 
> same transaction ID.
> 
> When I repeat the test through an intermediary resolver it only sends one 
> query datagram and gets a single response (and doesn't crash).
> 
> Any ideas?
> 
> --
> bk

Downloading the tarball for bind-9.7.2-P1 from ftp.isc.org and building it from 
source fixed the segfault issue.

I'm still seeing a (possibly related) issue where if I do dig +trace txt  it takes 6-10 seconds (measured by time(1)) to complete, all after 
printing the authoritative server for DNSBL (prior to printing answer).

If I do dig @ txt  I get the same pause. If I do 
dig @ txt  there is no pause.  There is also no pause 
if I do dig .  It doesn't look like there's any issue resolving 
the A RR, so why the long pause with dig +trace or dig @hostname vs. dig @IP?

I'm only getting this behavior with this particular DNSBL, so far as I know.  
The DNSBL runs a modified (only the back-end, SFAIK) version of rbldnsd.

--
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Re: m master file managed-keys.bind failed

2010-12-09 Thread Doug Barton

On 12/08/2010 11:51, Martin McCormick wrote:

I wrote:

Who is supposed to own /var/named?


I received a response from a kind soul from this list
who reminded me of a directive new to bind9.7.1 that lets you
determine where the managed-keys.bind file lives. I set up

managed-keys-directory "/etc/namedb/working";


That looks like a FreeBSD install. If you let it, /etc/rc.d/named will 
use mtree to update the permissions on all relevant directories at each 
startup, chroot, drop root privs, etc.



and all is now well with that zone. This appears to be a logical
place for the file and there is nothing else in that directory
which is already under bind ownership.


Yes, that is the purpose of the /working directory on FreeBSD installs. 
In the default conf there is this:


directory   "/etc/namedb/working";

I have set up DNSSEC validation on my personal workstation and using the 
managed keys directive it creates the files there.


If you're using FreeBSD I strongly suggest that you use the named.conf 
file provided as your starting point.



hth,

Doug

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Re: bind autosign - DS distribution

2010-12-09 Thread Matus UHLAR - fantomas
On 09.12.10 23:45, fakessh @ wrote:
> webmin implement the mecanism of resign  zones

good to know, but our system fille DNS data using some automatic processes
from more sources and I don't think they should use webmin for that ;)

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Re: bind autosign - DS distribution

2010-12-09 Thread Matus UHLAR - fantomas
> In message <20101209222644.ga2...@fantomas.sk>, Matus UHLAR - fantomas writes:
> > Is it possible(planned) for bind to sign slave zone?

On 10.12.10 09:41, Mark Andrews wrote:
> The master signs the zone.  The slaves just serve it.

The master still loads the zone somehow, from a file probably
(even dynamic zones are saved to disk on shutdown, aren't they?)

Being able to fetch zone from different server vi axfr/ixfr and sign it as
it would be dynamic zone would spare me from playing with opendnssec or
running dnssec-signzone manually.

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Re: bind autosign - DS distribution

2010-12-09 Thread fakessh @
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Le 09.12.2010 23:26, Matus UHLAR - fantomas a écrit :
>> In message <20101209220716.ga2...@fantomas.sk>, Matus UHLAR - fantomas 
>> writes:
>>> pardon my ignorance if this has been discussed (haven't notice), but
>>> if BIND is configured to automatically sign dynamic zones, does it
>>> distribute DS records to parent zones somehow? and if not, what are ways to
>>> do that? 
> 
> On 10.12.10 09:15, Mark Andrews wrote:
>> This is IETF dnsext/dnsop fodder. 
>>
>> The simple way would be to just record a TSIG key in the child zones
>> config to update the parent zone and use signed UPDATE messages.
>> Unfortunately this has run into layer 9 issues.
> 
> maybe some alternative of NOTIFY mechanism?
> 
> However that's apparently why I missed it...
> I think I'll try with opendnssec. I even don't like the automatic mechanism
> much because of bulk updates which I do quite often.
> 
> Is it possible(planned) for bind to sign slave zone?
> And, are incremental updates possible with dnssec?
> 
> I'm thinking about hidden master bind loading (un)signed zones and providing
> axfr/ixfr to our public servers
> 


webmin implement the mecanism of resign  zones

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Re: bind autosign - DS distribution

2010-12-09 Thread Mark Andrews

In message <20101209222644.ga2...@fantomas.sk>, Matus UHLAR - fantomas writes:
> > In message <20101209220716.ga2...@fantomas.sk>, Matus UHLAR - fantomas writ
> es:
> > > pardon my ignorance if this has been discussed (haven't notice), but
> > > if BIND is configured to automatically sign dynamic zones, does it
> > > distribute DS records to parent zones somehow? and if not, what are ways 
> to
> > > do that? 
> 
> On 10.12.10 09:15, Mark Andrews wrote:
> > This is IETF dnsext/dnsop fodder. 
> > 
> > The simple way would be to just record a TSIG key in the child zones
> > config to update the parent zone and use signed UPDATE messages.
> > Unfortunately this has run into layer 9 issues.
> 
> maybe some alternative of NOTIFY mechanism?
>
> However that's apparently why I missed it...
> I think I'll try with opendnssec. I even don't like the automatic mechanism
> much because of bulk updates which I do quite often.
> 
> Is it possible(planned) for bind to sign slave zone?

The master signs the zone.  The slaves just serve it.

> And, are incremental updates possible with dnssec?

Yes.  You just send the signature and nsec/nsec3 changes as well as the
data changes themselves.

> I'm thinking about hidden master bind loading (un)signed zones and
> providing axfr/ixfr to our public servers

DNSSEC works with hidden masters.
 
Mark
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Re: bind autosign - DS distribution

2010-12-09 Thread Matus UHLAR - fantomas
> In message <20101209220716.ga2...@fantomas.sk>, Matus UHLAR - fantomas writes:
> > pardon my ignorance if this has been discussed (haven't notice), but
> > if BIND is configured to automatically sign dynamic zones, does it
> > distribute DS records to parent zones somehow? and if not, what are ways to
> > do that? 

On 10.12.10 09:15, Mark Andrews wrote:
> This is IETF dnsext/dnsop fodder. 
> 
> The simple way would be to just record a TSIG key in the child zones
> config to update the parent zone and use signed UPDATE messages.
> Unfortunately this has run into layer 9 issues.

maybe some alternative of NOTIFY mechanism?

However that's apparently why I missed it...
I think I'll try with opendnssec. I even don't like the automatic mechanism
much because of bulk updates which I do quite often.

Is it possible(planned) for bind to sign slave zone?
And, are incremental updates possible with dnssec?

I'm thinking about hidden master bind loading (un)signed zones and providing
axfr/ixfr to our public servers

-- 
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Re: bind autosign - DS distribution

2010-12-09 Thread Mark Andrews

In message <20101209220716.ga2...@fantomas.sk>, Matus UHLAR - fantomas writes:
> Hello,
> 
> pardon my ignorance if this has been discussed (haven't notice), but
> if BIND is configured to automatically sign dynamic zones, does it
> distribute DS records to parent zones somehow? and if not, what are ways to
> do that? 

This is IETF dnsext/dnsop fodder. 

The simple way would be to just record a TSIG key in the child zones
config to update the parent zone and use signed UPDATE messages.
Unfortunately this has run into layer 9 issues.

Mark
-- 
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1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org
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bind autosign - DS distribution

2010-12-09 Thread Matus UHLAR - fantomas
Hello,

pardon my ignorance if this has been discussed (haven't notice), but
if BIND is configured to automatically sign dynamic zones, does it
distribute DS records to parent zones somehow? and if not, what are ways to
do that? 
-- 
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DiG 9.3.6-P1 segfaults on CentOS

2010-12-09 Thread Brian Keefer
This issue was initially reported to me by a customer running CentOS 5.5 
x86_64.  I was able to duplicate it on CentOS 5.5 i386 with dig version:
DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2

When doing a dig +trace to a DNSBL for a TXT record they're getting a segfault 
after making the final query (prior to displaying the answer).  I did a tcpdump 
of this behavior and saw two identical queries from the same source port with 
the same transaction ID 0.74 seconds apart.  The responses were received 
0.000745 seconds apart, from the same IP with the same transaction ID.

When I repeat the test through an intermediary resolver it only sends one query 
datagram and gets a single response (and doesn't crash).

Any ideas?

--
bk



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Re: DIG Source IP

2010-12-09 Thread Gary Wallis

Gary Wallis wrote:

John Williams wrote:
If I have a Linux host with multiple IP's, is there a way to utilize 
the DIG command such that the query appears like it's coming from 
different IP addresses?


So If I have 10 virtual IP's, is there a way to control the source IP 
of the query?


I've referenced the DIG man page and it doesn't appear to be 
possible.  Thanks in advance.




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Not supported. But that would be a great feature for dig. Would make 
testing views on other ACL related issues much easier.


Cheers,
Gary
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Whoops... -b has been available for some time.

OPTIONS
   The -b option sets the source IP address of the query to 
address. This must be a valid address on one of the hostâs
   network interfaces or "0.0.0.0" or "::". An optional port may be 
specified by appending "#"

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Re: DIG Source IP

2010-12-09 Thread Warren Kumari

On Dec 9, 2010, at 9:51 AM, John Williams wrote:

> If I have a Linux host with multiple IP's, is there a way to utilize the DIG 
> command such that the query appears like it's coming from different IP 
> addresses?
> 
> So If I have 10 virtual IP's, is there a way to control the source IP of the 
> query?
> 
> I've referenced the DIG man page and it doesn't appear to be possible.  
> Thanks 
> in advance.
> 

What version of dig? 

man for DiG 9.7.2-P3 says:
 The -b option sets the source IP address of the query to address. This must be 
a valid address on one of the host’s network interfaces or "0.0.0.0"
   or "::". An optional port may be specified by appending "#"

W
> 
> 
> 
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Re: DIG Source IP

2010-12-09 Thread Gary Wallis

John Williams wrote:
If I have a Linux host with multiple IP's, is there a way to utilize the DIG 
command such that the query appears like it's coming from different IP 
addresses?


So If I have 10 virtual IP's, is there a way to control the source IP of the 
query?


I've referenced the DIG man page and it doesn't appear to be possible.  Thanks 
in advance.




  
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Not supported. But that would be a great feature for dig. Would make 
testing views on other ACL related issues much easier.


Cheers,
Gary
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Re: DIG Source IP

2010-12-09 Thread Matus UHLAR - fantomas
On 09.12.10 06:51, John Williams wrote:
> If I have a Linux host with multiple IP's, is there a way to utilize the DIG 
> command such that the query appears like it's coming from different IP 
> addresses?
> 
> So If I have 10 virtual IP's, is there a way to control the source IP of the 
> query?
> 
> I've referenced the DIG man page and it doesn't appear to be possible.  
> Thanks 
> in advance.

which dig version? See the -b option
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Re: DIG Source IP

2010-12-09 Thread Sim
Hi

Have you tried [-b address] ?

---
Sim

2010/12/9 John Williams :
> If I have a Linux host with multiple IP's, is there a way to utilize the DIG
> command such that the query appears like it's coming from different IP
> addresses?
>
> So If I have 10 virtual IP's, is there a way to control the source IP of the
> query?
>
> I've referenced the DIG man page and it doesn't appear to be possible.  Thanks
> in advance.
>
>
>
>
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RE: DIG Source IP

2010-12-09 Thread Todd Snyder
dig -b {srcip}

-Original Message-
From: bind-users-bounces+tsnyder=rim@lists.isc.org 
[mailto:bind-users-bounces+tsnyder=rim@lists.isc.org] On Behalf Of John 
Williams
Sent: Thursday, December 09, 2010 9:51 AM
To: bind-users@lists.isc.org
Subject: DIG Source IP

If I have a Linux host with multiple IP's, is there a way to utilize the DIG 
command such that the query appears like it's coming from different IP 
addresses?

So If I have 10 virtual IP's, is there a way to control the source IP of the 
query?

I've referenced the DIG man page and it doesn't appear to be possible.  Thanks 
in advance.



  
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DIG Source IP

2010-12-09 Thread John Williams
If I have a Linux host with multiple IP's, is there a way to utilize the DIG 
command such that the query appears like it's coming from different IP 
addresses?

So If I have 10 virtual IP's, is there a way to control the source IP of the 
query?

I've referenced the DIG man page and it doesn't appear to be possible.  Thanks 
in advance.



  
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Re: maximum number of FD events (64) received

2010-12-09 Thread Dmitry Rybin
28.09.2010 10:46, JINMEI Tatuya / 神明達哉 пишет:
> These logs are not (directly) related to file descriptors.  They mean
> epoll returned more socket events than the implementation normally
> expects (which is 64).  This is not necessarily an error because the
> remaining events will be returned with the next call to epoll_wait().
> However, the event loop should generally runs pretty quickly, so it's
> still an unexpected situation.
> 
> You may want to check overall stability of the server, e.g., in terms
> of the ratio of server failures (SERVFAIL) that your server returns to
> the clients, cache memory footprint, cache hit ratio, number of query
> drops (if any), etc.   If these are okay and you only see the log
> messages occasionally, you can probably ignore them.
> 
> Otherwise, if you use multiple threads on a multi-core machine and you
> set max-cache-size to some finite value, you may be hit by a recently
> found bug in the cache memory management, which can make a caching
> server very busy.  (but it's a wild guess: I've personally never seen
> this bug trigger the log message in question).  This bug will be fixed
> in 9.7.2.

A have same error after upgrade from 9.7.0-P1 to 9.7.2-P2:

Dec  9 11:40:03 thunderball named[13574]: 09-Dec-2010 11:40:03.719
general: info: sockmgr 0x101856f70: maximum number of FD events (64)
received

bind-9.7.2-P3, FreeBSD 8. vanilla src:
make with:

$ STD_CDEFINES='-DFD_SETSIZE=16384' ./configure --enable-threads
--enable-largefile --enable-atomic --with-libxml2=yes
$ STD_CDEFINES='-DFD_SETSIZE=16384' make

===
Decision:
Add to configure & make STD_CDEFINES='-DISC_SOCKET_MAXEVENTS=256'


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