Re: Update Security

2014-03-14 Thread Chris Buxton
On Mar 14, 2014, at 10:50 AM, Bob McDonald wrote: > I agree that TSIG or SIG(0) signed updates are certainly a more desirable > approach than allowing updates via address. My DHCP server is setup to sign > all of it's updates this way. However, I have AD domain controllers in the > environme

Re: Singing a RRSET

2014-03-14 Thread Alan Clegg
On 3/14/14, 12:15 PM, Sergio Ramirez wrote: >We need to sign a RRSET individually out of the zone file. > The utilities dnssec-signzone and similars from other packages > check the zone before signing (SOA RR, DNSKEY RR, etc). > > Before to do a piece of programa to do this, we wanted to kno

Re: bind v9.9.5 becomes unresponsive when using samba4 dlopen driver

2014-03-14 Thread Nikos Mitas
Hello again, today I reinstalled bind 9.9.5 without threads, but i still have the same behavior. My environment was rhel v6.4, bind 9.9.3-P3 and samba v4.1. I upgraded to rhel v6.5, bind 9.9.5 and samba v4.1.5 but the problem remains: after a while bind 9 becomes unresponsive. I was not able to

Re: Audit the consistency of zone files on DNS servers

2014-03-14 Thread Mark Elkins
On Fri, 2014-03-14 at 14:54 -0400, Kevin Darcy wrote: > On 3/14/2014 2:39 PM, Maren S. Leizaola wrote: > > On 3/14/2014 9:20 PM, Stephane Bortzmeyer wrote: > >> On Fri, Mar 14, 2014 at 12:33:47PM +, > >> Phil Mayers wrote > >> a message of 25 lines which said: > >> > >>> dig @server zone a

Singing a RRSET

2014-03-14 Thread Sergio Ramirez
Hi, We need to sign a RRSET individually out of the zone file. The utilities dnssec-signzone and similars from other packages check the zone before signing (SOA RR, DNSKEY RR, etc). Before to do a piece of programa to do this, we wanted to know if there is any tool to sign just a RRSET ? T

Re: Audit the consistency of zone files on DNS servers

2014-03-14 Thread Kevin Darcy
On 3/14/2014 2:39 PM, Maren S. Leizaola wrote: On 3/14/2014 9:20 PM, Stephane Bortzmeyer wrote: On Fri, Mar 14, 2014 at 12:33:47PM +, Phil Mayers wrote a message of 25 lines which said: dig @server zone axfr >file diff file file.real If you're really paranoid, it may not be sufficien

Re: Re: Audit the consistency of zone files on DNS servers

2014-03-14 Thread Maren S. Leizaola
On 3/14/2014 9:20 PM, Stephane Bortzmeyer wrote: On Fri, Mar 14, 2014 at 12:33:47PM +, Phil Mayers wrote a message of 25 lines which said: dig @server zone axfr >file diff file file.real If you're really paranoid, it may not be sufficient since a server may reply differently to "norma

Re: Audit the consistency of zone files on DNS servers

2014-03-14 Thread Kevin Darcy
On 3/14/2014 8:28 AM, Maren S. Leizaola wrote: Hello, What do you guys recommend to audit every resource record in a zone file against all the records in all the DNS servers that host the zone file. I want something that I feed the master zone file and then goes to each NS serv

Re: Update Security

2014-03-14 Thread Bob McDonald
I agree that TSIG or SIG(0) signed updates are certainly a more desirable approach than allowing updates via address. My DHCP server is setup to sign all of it's updates this way. However, I have AD domain controllers in the environment that don't currently use signed updates. Is there a fairly

Re: Update Security

2014-03-14 Thread Mark Andrews
If you are going to forward updates use TSIG or SIG(0) to sign the update and stop worrying about addresses. TSIG and SIG(0) are billions and billions of times stronger authenticators than a IP address. "allow-update-forwarding { any; };" says forward all updates regardless of the address they w

Update Security

2014-03-14 Thread Bob McDonald
I want to confirm my understanding of security of DDNS updates. I have a stealth master "A" feeding slave "B" and "C". I have allow-update-forwarding { any; } specified on "B" and "C". If a client "D" presents an update to "B" or "C" it will automatically be forwarded to "A". If "B" or "C" are

Re: Audit the consistency of zone files on DNS servers

2014-03-14 Thread Phil Mayers
Quite right I should have noted the need to canonicalise. -- Sent from my phone with, please excuse brevity and typos___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lis

Re: Audit the consistency of zone files on DNS servers

2014-03-14 Thread Stephane Bortzmeyer
On Fri, Mar 14, 2014 at 12:33:47PM +, Phil Mayers wrote a message of 25 lines which said: > dig @server zone axfr >file > diff file file.real If you're really paranoid, it may not be sufficient since a server may reply differently to "normal" DNS queries and to zone file transfer requests

Re: Audit the consistency of zone files on DNS servers

2014-03-14 Thread Stephane Bortzmeyer
On Fri, Mar 14, 2014 at 12:33:47PM +, Phil Mayers wrote a message of 25 lines which said: > dig @server zone axfr >file > diff file file.real diff is not clever enough, you'll find many spurious differences. Try feeding the two files (the local one and the AXFRed one) through named-compil

Re: Audit the consistency of zone files on DNS servers

2014-03-14 Thread Phil Mayers
On 14/03/14 12:28, Maren S. Leizaola wrote: Hello, What do you guys recommend to audit every resource record in a zone file against all the records in all the DNS servers that host the zone file. I want something that I feed the master zone file and then goes to each NS s

Audit the consistency of zone files on DNS servers

2014-03-14 Thread Maren S. Leizaola
Hello, What do you guys recommend to audit every resource record in a zone file against all the records in all the DNS servers that host the zone file. I want something that I feed the master zone file and then goes to each NS server and ensures that each of the records are

Too many open files

2014-03-14 Thread Hinst, Robert
Running bind-9.3.6-4.P1.el5_5.3 on CentOS 5.5 and I'm constantly seeing the following in my BIND logs: general: error: isc_socket_create: fcntl/reserved: Too many open files But I don't see why. Named only has 583 files open and I upped the max to 9 in /etc/security/limits.conf. Has anyone