bind-chroot queries on symbolic Links to named.conf

Hello Experts I need some help with bind-chroot We are running below version of bind and bind-chroot bind-9.11.2-lp151.10.1.x86_64 bind-chrootenv-9.11.2-lp151.10.1.x86_64 Our Automation code is running to add Zone files to /var/lib/named/etc/named.conf only and not to /etc/named.conf So in or

Bind-Users-Forum Link is down

Hi I am sorry if this question is posted elsewhere But I am not able to access this link Bind-Users forum http://bind-users-forum.2342410.n4.nabble.com Is it down? Thanks Concerned user ___ Please visit h

Maximum limit in a NAPTR RR

Hello Experts, Need a help, How do I know what is the maximum limit in a NAPTR RR which I am trying to configure? If I configure as below 5.4.7.7.7.0.1.telus.com. IN NAPTR 8 0 "u" "sip+E2U" "!^(.*)()(..)$!sip:\\1@154.11.143.16;maddr=\\2.\\3.prim-sc.RL.telus.com;x-nortel-profile=canadian.de

Steps to reload zone files automatically?

Hello Is there an automatic way we could use reloading the zone files rather than using rndc reload or named restart? Any methods or links which can be shared to help us reload the zone files automatically once we make changes to the zone files ( cron methods or shell scripts) We are running

Re: What is wrong in the view matching below

zone internal.nixcraft.com/IN: has 0 SOA records zone internal.nixcraft.com/IN: has no NS records zone internal.nixcraft.com/IN: not loaded due to errors. From: Ondřej Surý Sent: Thursday, December 5, 2019 6:42 PM To: Sten Carlsen Cc: Harshith Mulky ; bind-user

What is wrong in the view matching below

I have setup view matching as below on my bind server running version "bind-9.9.5P1-2.2.2.x86_64" my /etc/named.conf is as below options { directory "/var/lib/named"; #dnssec-enable yes; managed-keys-directory "/var/lib/named/dyn/"; dump-file "/var/log/named_dump

function in DNS to provide an answer depending on the source of query.

Hello, Is there a possibility to achieve this from a DNS If Carrier A (source IP: A.A.A.A) sends NAPTR query X to DNS, then DNS replies NAPTR response Y. If Carrier B (source IP: B.B.B.B) sends NAPTR query X to DNS, then DNS replies NAPTR response Z. is there any function in DNS to provide

Negative Caching of DNS Responses for Different RCODES

Hello experts, If a DNS server looks up a record and it's missing, it will often "negatively cache" the fact that this record is missing, and not try to look it up again for a while. >From RFC 2308, Negative Caching of DNS Queries, I understood, the TTL for >NXDOMAIN RCODE responses is taken fr

Understanding RR service types "E2U+sip" and "E2U+pstn"

Wanted to understand, if in a ENUM RR, can service type "E2U+SIP" contain a rn number?like this:"E2U+sip" "!^.*$!sip:1413407;npdi;rn=+14134000...@atlanta.com;user=phone!"IF yes, what is the practical use of having a rn number in E2U+sip rather than E2U+pstnDoes any RFC specify carrying rn numbe

Can a E2U+SIP service type contain rn number

Wanted to understand, if in a ENUM RR, can service type "E2U+SIP" contain a rn number? IF yes, what is the practical use of having a rn number in E2U+sip rather than E2U+pstn Does any RFC specify carrying rn number in E2U+SIP Thanks Harshith ___ P

Differences Between Recursion Desired and Recursion Available

Hello Experts, I read this from RFC1035 about RD and RA Bits RD Recursion Desired - this bit may be set in a query and is copied into the response if recursion supported by this Name Server. If Recursion is rejected by this Name Server, for example it has been configured as Authoritative Only

Re: bind-users Digest, Vol 2734, Issue 2

Am 15.09.2017 um 09:37 schrieb Harshith Mulky: > Hello Experts, > > I had a query on advertising the payload size on client in DNS Responses > over UDP/TCP > > > This is as much I have understood from RFC 6891, that a > requester(client) can address his capabilities to re

Re: What is wrong with my second $ORIGIN

Than you All. Did not notice I had missed a trailing '.' Will make sure I do not miss these things the next time I test -- Sent from: http://bind-users-forum.2342410.n4.nabble.com/ ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users t

Is there a need for clients to advertize the capabilities for DNS Responses over TCP

Hello Experts, I had a query on advertising the payload size on client in DNS Responses over UDP/TCP This is as much I have understood from RFC 6891, that a requester(client) can address his capabilities to restrict the UDP Payload size to a limit between 512 to 4096 bytes based on his limit

What is wrong with my second $ORIGIN

Hello Experts, Whats wrong with my second $ORIGIN here: $ORIGIN lab.example.com. $TTL 1d @ IN SOA colombo root.lab.example.com. ( 2003022720 ; Serial 56800 ; Refresh

Re: Can a NAPTR query over TCP contain OPT section in Additional Records

Hi Mukund, I am trying Fallback procedures from edns query to TCP when edns Responses have TC bit set to 1 Regards Harshith -- View this message in context: http://bind-users-forum.2342410.n4.nabble.com/Can-a-NAPTR-query-over-TCP-contain-OPT-section-in-Additional-Records-tp4018p4020.html Sent

Can a NAPTR query over TCP contain OPT section in Additional Records

Hello Experts, I am having this Call Flow Client DNS EDNS query, buffer size=4096 ---> DNS Response, Truncation bit set (TC=1) <

Re: edns responses not sent by DNS Server

Can this be controller in the Bind Server? Are there any options to control this behavior? -- View this message in context: http://bind-users-forum.2342410.n4.nabble.com/edns-responses-not-sent-by-DNS-Server-tp3884p3889.html Sent from the Bind-Users forum mailing list archive at Nabble.com. __

Re: edns responses not sent by DNS Server

Hello Mark, Yes the client is retrying the query over TCP. But initially I am getting no Answers The ANSWER is as below ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 18094 ;; flags: qr aa tc rd ad ; QUESTION: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: versio

edns responses not sent by DNS Server

Hello Experts, I have bind installed on OpenSuse 13.2 with version: bind-9.9.5P1 I am doing a Test with client application telling that edns is supported on DNS Server with udp-payload-size supported as 512 bytes I have the following configuration on my DNS Server server 127.0.0.1 { edn

Why does dig queries for NAPTR not return Additional Section info as Detailed returned in SRV dig response

Hello, This is my Zone File $TTL 1 @ IN SOA hp3bl5PSXDNS.testnet.com. root.testnet.com. ( 2017051700 ; Serial number (mmdd-num) 8H ; Refresh 2M ; Retry 4W ; Expire 1D ) ; Minimum IN NS hp3bl5PSXDNS hp3bl5PSXDNS A 10.54.213.8 testnet.com.

Allowing DNS to listen only on UDP

Hi Experts, Is there a easy way to turn off/ Disable the DNS server to stop listening the requests over TCP and turn it ON whenever required? I would want to test where a. I would be able to send the request to a DNS Server over TCP and DNS Server rejects the Incoming message over TCP b. La

Need of 2 $ORIGIN Directives

Hello, We have bind running bind-9.9.4-29.el7.x86_64 We have a domain file with these configurations and we have to build our A records on top of this $ORIGIN . $TTL 86400 ; 1 day atlanta.comIN SOA local.atlanta.com. master.atlanta.com. ( 2001062522 ; serial

Is there a way to turn off EDNS Responses from Server globally for all the endpoints

Hello Experts, I have installed Bind with version: bind-9.9.5P1-2.2.2.x86_64 I have tried these Options on the server to turn off EDNS globally to all the servers in the network we have configured server 0.0.0.0/0 { edns no; }; server ::/0 { edns no; }; But I see the DNS Server is sending re

Unable to Load the Zone file

I have created this in the /etc/named.conf zone "enum.bhnis.net" IN { type master; file "enum.bhnis.net"; }; And the file looks like this $ORIGIN . $TTL 3600 ; 1 hour @ IN SOA atlanta.enum.bhnis.net. root.enum.bhnis.net. ( 20089270

Re: Need of caching on bind server

cached web page link 2 days ago] Thanks Harshith From: Woodworth, John R Sent: Thursday, August 25, 2016 10:46 AM To: 'Harshith Mulky'; bind-users@lists.isc.org Cc: Woodworth, John R Subject: RE: Need of caching on bind server > From: bind-users

Need of caching on bind server

Hello, I am trying to understand why caching is required on the bind server, when the client receiving the responses would be caching based on TTL values. So, Is caching required on the server, if the client is not able to cache such responses? Isn't it a overhead on both the client and serv

Query on Bind Operations

Hello Experts, Can max-cache-ttl be used on the client( client which supports bind) to override the default ttl time sent in response by Bind server for Positive Responses? Thanks Harshith ___ Please visit https://lists.isc.org/mailman/listinfo/bi

Re: Option in named to turn off EDNS Globally

iled Aug 5 11:59:19 coorg named: /etc/named.conf:120: '{' expected near '/' Thanks Harshith From: Mark Andrews Sent: Friday, August 5, 2016 11:11:01 AM To: Harshith Mulky Cc: bind-users@lists.isc.org Subject: Re: Option in named to turn off EDNS

Option in named to turn off EDNS Globally

Hello, Is there a option in named to turn off EDNS Responses(not Requests) Globally I have tried with this Option on named server 0.0.0.0 { edns no; }; But does not seem to work Any other options? Thanks Harshith ___ Please visit https://l

Query on the Order in which RR are answered by Bind of Order/preference are Same

Hello Experts, I had a query on how the following Records can be ordered on how the Records are configured in the Zone file I have done 2 different Tests I have configured following records in the Zone file e164enum.net with TTL value as 0 2.7.5.2.7.9.2.5.3.1.8.e164enum.net. IN NAPTR 100 10 "

Help required to test some Negative Responses from Bind Server.

Hello Experts, As a tester who is testing a client(lwres) developed on same bind stack. I would want to generate scenarios and test how the client responds when the bind server responds with negative Responses I was able to test Negative response like NXDOMAIN as it was straight forward wher

Unable to understand why a different A record response being sent by bind

I am Running bind (bind-9.9.5P1-2.2.2.x86_64) on Open Suse 13.2 I have the following Records in my Zone file $ORIGIN test1.com. $TTL 600 @ IN SOA atlanta.test1.com. admin.test1.com. ( 2003022720 ; Serial 5680

Enabling edns on Bind 9.9

How can I enable EDNS on the bind server? Will just enabling this edns-udp-size size_in_bytes ; set the EDNS on the bind server? Or is EDNS Client specfic feature? Thanks Harshith ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users

Questions on bind-chroot

Is it necessary for named.conf in the chroot path and /etc path to be same [root@denver named]# ls -ltrh /etc/named.conf -rw-r-. 1 root named 904 Jun 6 14:50 /etc/named.conf [root@denver named]# ls -ltrh /var/named/chroot/etc/named.conf -rwxr-xr-x. 1 root root 1.1K Jun 10 18:19 /var/named/ch

Why isn't my Bind server answering this query

I have bind Running on following Version: bind-9.8.2-0.17.rc1.el6.x86_64 I have /etc/named.conf configured as zone "e164.arpa" IN { type master; allow-query {any;}; file "e164.arpa.zone"; }; zone "test1.com" IN { type master; allow-query {any;}; file "test1.zone";

Which Domain is picked by Bind Server?

If I have the following configuration in Bind server inside named.conf zone "e164.arpa" IN { type master; file "e164.arpa"; }; zone "1.e164.arpa" IN { type master; file "e164.arpa"; }; zone "2.e164.arpa" IN { type master; file "e164.arpa"; }; a

What is the use of having a chroot path during installation of Bind

Hello, When installing bind, the following 2 are installed bind-9.8.2-0.17.rc1.el6.x86_64 bind-chroot-9.8.2-0.17.rc1.el6.x86_64 What is the need of this bind-chroot? I see all files in /var/named path are softlinks to /var/named/chroot/var/named and /etc/named.conf is softlink to /var/

Testing DNS delegation using 2 Linux devices

Hello, Is it possible to test DNS delegation using 2 Linux devices running RHEL Version 6.1 and bind-9.8.2 What changes would be required in named.conf or Zone Files in order to test this P.S: This is just for my learning purpose, as I am unable to understand how the Tiered architecture wor

How is a $ORIGIN directive used inside a DNS Zone File

Why is a $ORIGIN directive used in DNS Zone Files? Would my Zone Files not work if I do not have $ORIGIN directive? I would need some examples on how this works, lets say $ORIGIN . [ What does $ORIGIN . mean?] or What is the difference here having 1.e164.arpa. in $ORIGIN [ as in example 1] or

How to make bind/named to listen for requests on both IPV4 and IPV6

Hi, I would want my Test DNS Server running bind Version: bind-9.8.2-0.17.rc1.el6.x86_64/bind-chroot-9.8.2-0.17.rc1.el6.x86_64 to listen for Requests on both IPV4 and IPV6. -

RE: bind-users Digest, Vol 2230, Issue 1

look.com; bind-users@lists.isc.org CC: john.woodwo...@centurylink.com Subject: RE: bind-users Digest, Vol 2230, Issue 1 Date: Wed, 21 Oct 2015 07:48:16 + > > From: bind-users-boun...@lists.isc.org > [mailto:bind-users-boun...@lists.isc.org] On Behalf Of Harshith Mulky > Se

RE: bind-users Digest, Vol 2230, Issue 1

at > bind-users-ow...@lists.isc.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of bind-users digest..." > > > Today's Topics: > >1. How does a Client Verify if the DNS server is Alive or do

How does a Client Verify if the DNS server is Alive or down

Hi All, How can a Client verify if the DNS Server is Running(named service is Running) or Down? Does it periodically send any messages to the server. What Kind of messages are required by the client to be sent towards server to determine if the DNS IP is reachable or not? Thanks Harshith

FW: SRV Request to DNS

Hi all, I had a query Let us say we are having a FQDN and we need to Resolve it. It goes through the procedure of determining the IP and Port using NAPTR/SRV/A query mechanisms The question I have is if I have a FQDN with a Port Number already determined, will it go through the Procedure of NA

SRV Request to DNS

Hi all, I had a query Let us say we are having a FQDN and we need to Resolve it. It goes through the procedure of determining the IP and Port using NAPTR/SRV/A query mechanisms The question I have is if I have a FQDN with a Port Number already determined, will it go through the Procedure of NA

E164 Number Mapping

Hello, I have a question on E164 Number Mapping: Lets say I have a number as "9986012345" with Country Code as "1" For E164 Number to be mapped and to be queried from DNS, it should be converted into ENUM domain like, 5.4.3.2.1.0.6.8.9.9.1.e164.arpa. [e164.arpa being the Public domain] I assume

RE: Multiple A and PTR and the "main" ones?

I could not stop asking the question related to this. I am sorry if this is not relevant to this Topic Is it not possible to send multiple "A" Records for a same name with different IPs. It might be that the bind might be listening on multiple IPs on same server What would happen if one of the

How are DNS Records added dynamically in DNS Servers?

Just a query, How do System administrators add DNS Zone records in DNS Servers? I do testing at campus, and I do everything, by manually adding the Records Is there a specific way the records are added in DNS Servers dynamically? __

RE: DNS Negative Caching (Harshith)

---- next part -- > An HTML attachment was scrubbed... > URL: > <https://lists.isc.org/pipermail/bind-users/attachments/20150831/a9041efe/attachment-0001.html> > > -- > > Message: 3 > Date: Mon, 31 Aug 2015 10:23:54

Understanding different service fields in DNS Records

Hi, Needed to understand the different Service fields used in ENUM/DNS Records specifically, E2U+sip, E2U+pstn, E2U+sip:pstn, E2U+pstn:sip and other supporting formats Is there any RFC/documents/Links which helps in understanding this various formats with examples. Thanks Harshith

DNS Negative Caching

I have a confusion on how the clients respond to and cache when particularly we receive negative replies from a DNS Server, particularly NXDOMAIN or SERVFAIL responses on the DNS Zone file we have these records $ORIGIN e164.arpa. @ IN SOA picardvm2.e164.arpa. e164-contacts.e164.arpa. (

Order and Preference Priority in DNS Responses

I wanted to understand how Order and Preference Values have an impact on the answers Received from the DNS Server I am asking because, I have 4 records for NAPTR Query, as below carrier1.com 86400 IN NAPTR 50 50“s” “SIPS+D2T” ““ “_sips._tcp.carrier1.com.” carrier1.com 86400 IN N

Need for Additional Records in a

Hello, When we are getting Additional Section for a DNS Response like this, What is the need for this ADDITIONAL SECTION? Why is this ADDITIONAL SECTION returned? Is there a way to turn off these ADDITIONAL RESPONSE messages from the DNS Server? dig _sip._udp.belur.inlab.com SRV ; <<>> DiG 9

Receiving Timeout from DNS Server for a zone file Not present in named.conf

Hello, I have a query here, I have named.conf configured But I do not have zone file configured for a domain name as "e164.ld" I am sending out a query asdig @ 8.7.9.8.6.0.3.6.6.9.1.e164.ld. NAPTR ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6 <<>> 8.7.9.8.6.0.3.6.6.9.1.e164.ld. NAPTR;; global

Query on /var/named/chroot jail and Permissions

I have currently Installed bind-9.8.2-0.17.rc1.el6.x86_64 Earlier when I used to copy the Zone files to /var/named Directory,they were automatically getting copied the /var/named/chroot/var/named directory andAny changes in the zone files in /var/named directory would automatically replicate in

dns_rdata_fromtext Syntax Error for "\" in bind-9.8.2

Hello All, I have a Zone file Configured like this wiht the below NAPTR Record. I have an issue while loading the Zone File Bind Version I am Running is bind-9.8.2-0.17.rc1.el6.x86_64 While Loading the Zone file, it gives the following syntax Error " dns_rdata_fromtext: psx64.com:16: syntax error