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Questions tagged [bind]

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BIND is a free, open source software implementation of the Domain Name System (DNS) protocols. The name BIND stands for "Berkeley Internet Name Domain", because the software originated in the early 1980s at the University of California at Berkeley. BIND is currently maintained and developed by the Internet Systems Consortium, a non-profit public benefit corporation with a mission to support a free and open internet.

2,335 questions
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181 views

I have Bind9 version 9.18.39 on Ubuntu 24.04 LTS. The Bind is frequently the target of denial of service attacks. I was managing it with Fail2ban jail for "refused+denied". To decrease the ...
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1 answer
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(Note: I've edited this to replace specific domain names and IP addresses with unroutable/unresolvable examples.) Context Obviously reality is subject to change, but as I write this, the authoritative ...
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I have a server that runs Ubuntu 24.04, which functions as the master-zone-server using Bind9. I store all my zone files in two separate folders: /etc/bind/master-zones/forward-zones/ /etc/bind/...
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By default, dnssec automatic signing produces 'raw' files as output. These are unreadable binary files. If I do not care about the couple of extra megabytes the normal text format output takes, and ...
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I am trying to update resource records on a primary DNS bind9 server from a client using nsupdate. There is no issue when using the default 53 port. An issue appears when using DoT (DNS over TLS) over ...
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1 answer
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I'm currently working as a collaborator in my university's network services department. Our infrastructure aims to follow Uptime Institute Tier II standards, so we are focusing heavily on redundancy ...
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3 answers
544 views

I generated my key using opendkim-genkey -s 2026 -b 1024 and fixed the ownership and permissions on the two files generated in /etc/dkimkeys/. I updated my local DNS and flushed the caches. ; <<...
Score of 5
2 answers
988 views

We are setting up a captive portal for guest users using our Cisco ISE servers, and we have a Linux box running BIND just for those users. All OSes work fine and redirect to the ISE guest login page ...
Score of 1
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201 views

Context We host a few services like gitlab on-prem which are accessible from the outside at gitlab.example.com which points to origin.example.com and is registered on an external DNS server. On our ...
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I've deployed a simple bind server, and I'm failing for a single resource record/zone. We don't handle this zone in-house, so I would think that root hints would handle it the way we're configured. ...
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I have a setup where: client = x.y.36.152 recursive resolver + DoH server = x.y.36.153 authoritative DNS = x.y.36.150 TLS server = x.y.36.148 I’m running BIND9 as the recursive resolver on .153. I ...
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1 answer
134 views

I have this bind9 settings: named.conf: include "/etc/bind/named.conf.options"; include "/etc/bind/named.conf.local"; named.conf.options: include "/etc/bind/rndc.key"; ...
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69 views

I run a nameserver that resolves a significant amount of different 2nd level domains, especially under the com zone. This causes this nameserver to query gtld-servers.net quite regularly. I am ...
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2 answers
2643 views

I have a problem with the configuration of my DNS server (public resolver) at the moment. It works fine, but I have an error in the logs, a few seconds after starting bind : managed-keys-zone: Unable ...
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1 answer
79 views

I am implementing two Internal BIND DNS servers on ubnutu 22.04 (forwarding and caching) to replace CISCO umbrella (paid). All internal domain traffic will be forwarded to our Domain Controller, and ...

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