Re: [bind-users] dhcp failover is not working as expecte

2018-05-02 Thread Jerry Kemp
Julie, Not intending to come across as rude, but is this the list you intended to post to? FWIW, you posted to the BIND list, not the DHCPD list. Good luck, Jerry On 02/05/18 19:30, Julie Xu wrote: Hi, I have dhcpd running on two servers. Share the load 50%. I expect if one of the server

dhcp failover is not working as expecte

2018-05-02 Thread Julie Xu
Hi, I have dhcpd running on two servers. Share the load 50%. I expect if one of the servers has issue, another one will automatically take over for all 100% clients. But, the fact is not. When one of them down, or frozen, half of users had lose network without ip address. My configuration is:

Re: root hints

2018-05-02 Thread Rick Dicaire
Thanks for the responses folks...so if I don't need to manage root.hints, can I remove the line: zone "." IN {type hint;file "root.cache";}; from named.conf? ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this li

Re: root hints

2018-05-02 Thread Warren Kumari
On Wed, May 2, 2018 at 5:02 PM Greg Rivers wrote: > On Wednesday, May 02, 2018 16:48:00 Rick Dicaire wrote: > > ... what is the official/best practise/recommended way to update > root.hints? > > > https://www.iana.org/domains/root/files > > But you don't really need it unless you're running an in

Re: root hints

2018-05-02 Thread Greg Rivers
On Wednesday, May 02, 2018 16:48:00 Rick Dicaire wrote: > ... what is the official/best practise/recommended way to update root.hints? > https://www.iana.org/domains/root/files But you don't really need it unless you're running an internal root; as stated at that link, "For many pieces of softwar

root hints

2018-05-02 Thread Rick Dicaire
Hi, used to be you could dig > root.hints and use this file in named.conf for root.hints configuration. Some time around 9.11? the output of dig with no arguments stopped reporting the ADDITIONAL section that shows the IPs of the root servers. I've moved on to 9.12 and the dig behaviour is same as

Re: Can we block/detect DNS beacon channels?

2018-05-02 Thread Grant Taylor via bind-users
On 05/02/2018 12:59 PM, Blason R wrote: Well, challenge is not implementing RPZ that part is done but now wondering as a advanced part if such attacks can be detected as well blocked by using RPZ? I guess one option I see if to deploy HIDS on BIND server like suricata which will detect such att

Re: Can we block/detect DNS beacon channels?

2018-05-02 Thread Blason R
Well, challenge is not implementing RPZ that part is done but now wondering as a advanced part if such attacks can be detected as well blocked by using RPZ? I guess one option I see if to deploy HIDS on BIND server like suricata which will detect such attacks. But that will consume lot of resources

Re: Can we block/detect DNS beacon channels?

2018-05-02 Thread Grant Taylor via bind-users
On 05/02/2018 12:23 PM, Blason R wrote: I would really appreciate if someone can shed light; if DNS based advanced attacks can be stopped using DNS RPZ? Like DNS beacon channels or Data Exfiltration through DNS queries. If you know fixed aspects of the queries / responses, you can very likely

Can we block/detect DNS beacon channels?

2018-05-02 Thread Blason R
Hi, I would really appreciate if someone can shed light; if DNS based advanced attacks can be stopped using DNS RPZ? Like DNS beacon channels or Data Exfiltration through DNS queries. ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to

Dynamic zone vs static records

2018-05-02 Thread Jérôme BECOT
Hello, We are managing our DNS zone within LDAP through a 3rd party editor (FusionDirectory). This software is configured to export the LDAP configuration to plain text zone files, updated on the master (and a zone reload is made by the software by calling rndc). If we make this zone dynamic

Re: policy-ip-trigger

2018-05-02 Thread Blason R
Oh I overlooked the statement.. Yep we need to use prefix *IPv4 IP Trigger Name Format* The keyword label of rpz-ip invokes this trigger type. The IPv4 address is written in the form *prefix.a4.a3.a2.a1.rpz-ip* Does anyone have any better idea to reverse it? On Wed, May 2, 2018 at 5:00 PM, Blaso

policy-ip-trigger

2018-05-02 Thread Blason R
Hi, I am trying to write a zone for policy-ip-trigger and trying to reverse the IP which I have done with below command cat test | awk -F. '{print $4"."$3"."$2"."$1".rpz-ip"}' Does any one have any other idea? Also with policy-ip-trigger is it mandatory to provide subnet mask in reverse manner?