Questions tagged [ddns]

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It's possible to "redirect" dns to other dns [closed]

Noob here, for some background, I have a raspberry pi which I turn it into a personal server, all port forwarding and DDNS already setup (my ISP doesn't provide a static IP for general costumers). ...
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10 views

Lost remote connection to MySql through DDNS addres to local server after installing IIS Windows Server 2012 R2

I have a DDNS service that I use to connect to my local MySQL server when out of the office through my desktop app, everything was working fine until I installed IIS on the Server (Win Ser 2012 R2), I ...
0 votes
0 answers
17 views

OpenVPN over PPPoE with DDNS

I have a router (tp-link AX5400 with vpn support) that is connected to internet over PPPoE. The server has a built in open vpn server. I linked a DDNS to the router and enabled openvpn server but ...
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0 answers
77 views

Statically assigned leases in ISC DHCP server are not added to DDNS

I have a gateway running both isc-dhcp-server and bind9 on Debian. Hosts that are assigned IP addresses in the DHCP range are added to the DNS zone; however, devices that I assign a static lease on ...
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0 answers
69 views

Does DDNS work within an ISP subnet?

I'm trying to host a web server through a Raspberry PI 4, but found some problems in the final steps of my configuration. What I did is the following: Install Nginx. Install Node to host my site (I'm ...
0 votes
0 answers
132 views

Windows Server Dynamic DNS Updates and tsigSecret

I was instructed by one of the teams to get a "tsigSecret" for one of our DNS Zones in favor of dynamic updates. This is being used by ExternalDNS. I cannot find how to extract\create it ...
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1 answer
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How to log verbose details about DNS update queries in bind

Is there any way to log failed DNS update queries with Bind 9 (9.16.22 on Debian) in a more verbose format? I tried all logging categories and found update messages in an update-security one. But ...
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1 vote
1 answer
758 views

DHCP Server Not Registering PTR Records - Multiple DHCP Servers

I have a DHCP server configured to always dynamically update DNS records. The DNS server is configured to allow both secure and insecure updates (I know it's not secure, but this is an internal-only ...
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1 answer
108 views

Bind DDNS change receiving `update failed: NOTAUTH`, how to fix that authorization issue?

I have the following zone definition: zone "madetoorder.software" { type master; file "/var/lib/bind/example.com.zone"; allow-transfer { trusted-servers; }; check-names ...
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1 answer
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apache2 virtualhost not forwardng to correct virtual host (now a registered user)

Apache 2.4 / Ubuntu 20.4 (Linux Mint 20.3) I am testing with 2 domain names, example1.com and example2.com I have followed instructions at https://www.digitalocean.com/community/tutorials/how-to-...
0 votes
0 answers
23 views

apache2 virtualhost not forwardng to correct virtual host

Apache 2.4 / Ubuntu 20.4 (Linux Mint 20.3) I am testing with 2 domain names, example1.com and example2.com I have followed instructions at https://www.digitalocean.com/community/tutorials/how-to-...
0 votes
1 answer
187 views

Difference of Dynamic DNS and Change Zone Automatically by Program

I know DDNS is translating Dynamic IP (IP which always changes in a device) to a Domain, but I don't know how the story behind it or I don't know how does it work. I'm using bind9 as DNS server, we ...
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2 answers
2k views

ddclient with cloudflare not updating

Have a domain registered with Namecheap, using Cloudflare DNS servers. Prior this setup I was just using Namecheaps DNS until realizing I cannot use their production APIs for Traefik. Whilst I had ...
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0 answers
166 views

ISC-DHCP and BIND 9 DNS: DDNS update fails for /27 subnet

I have a problem with DDNS update with ISC-DHCP server. My /etc/dhcp/dhcpd.conf subnet section that doesn't work is: subnet 193.198.186.192 netmask 255.255.255.224 { range 193.198.186.200 193.198....
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0 votes
1 answer
190 views

ISC DHCP/DDNS setup: Static entries for non-dhcp clients

I have set up a local network with ISC BIND9 and DHCP service. New leases trigger the DHCP to add an A and PTR record which works perfectly. I also added lots of static host entries in the dhcpd.conf. ...
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1 vote
1 answer
285 views

Is it possible to have both static and a dynamic A record created for the same host on an internal DNS server?

I am working on a case study related to risks from insecure dynamic DNS updates. Suppose there is an internal DNS configured that has a mix of static and dynamically created addresses. Consider a ...
0 votes
1 answer
73 views

Self-hosted DDNS as part of a consumer product offering (potentially >>1000 sub-subdomains), how? [closed]

I'm developing a product that enables users to run a service at home which is part of a larger network. This service needs to be contacted regularly by a coordination service running in the cloud (on ...
0 votes
1 answer
1k views

Bind9 refuses key from nsupdate

I have a Bind9 DNS server running (and working!). All the zones were managed manually. I now want to change a zone to be updated automatically. After setting things up i tried nsupdate but it fails ...
0 votes
1 answer
493 views

SRV record not working properly?

I'm currently dealing with a little problem that routes back to me simply not having a static IP, as my ISP charges a ridiculous sum for that. I have a DDNS in place, which works fine. Except, I'm now ...
0 votes
1 answer
126 views

Windows AD not updating Linux DDNS in hybrid integration

I am setting up a Windows AD server, with a Linux DDNS setup. The Linux DDNS runs perfectly fine as expected. However, when I try to add the AD role to the Windows Enterprise 2019 server, the role ...
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I cannot correctly deploy my DDNS test server

from dnslib.server import * class TestResolver: def resolve(self,request,handler): reply = request.reply() reply.add_answer(*RR.fromZone("abc.def. 60 A 1.2.3.4")) ...
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1 answer
88 views

What is the recommended approach for mapping naked hosted domains through DDNS to www? [closed]

I am hosting a few domains on "mydomain.com". I have created a CNAME mapping for all subdomains (*) to my DDNS entry "[my_name].ddns.net". These are working great. I cannot ...
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1 answer
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How do I forward a www subdomain through DDNS and use the domain's certificate? - Ubuntu Nginx Let's Encrypt DDNS

I think I am missing something simple, but I just can't see it. I am running the latest Nginx on a home machine running Ubuntu 20.04 version 2. I have pfsense as my router/firewall running on a ...
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0 votes
1 answer
4k views

Unable to add forward map SERVFAIL/REFUSED DDNS

I am using bind9 on a primary dns server with two secondary dns servers in a master/slave relationship. I am attempting to implement DDNS but seem to be running into a problem when it comes to adding ...
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1 vote
0 answers
93 views

How to set up dynamic DNS for 'host' in isc dhcpd

I have set up a couple of subnets in my network, and in one of these subnets I'm setting up hosts like this: subnet 10.0.0.0 netmask 255.255.255.0 { option ntp-servers 10.0.0.1; option time-...
1 vote
0 answers
519 views

BIND and DDNS updates, for Let's Encrypt certs

I need a TLS cert for Exim and not a website. For people who do not use webserver, Let's Encrypt provides certs via so-called DNS-01 challenge. It's simple really, a hook script dynamically updates ...
-3 votes
2 answers
63 views

I have no access to router and portforward and i need to run a webserver [closed]

I got some PCs in some different locations with different ISPs and networks with dynamic ip addresses and I have a dynamic dns server that can records new IPs. but there is a problem. ISPs blocked all ...
0 votes
1 answer
325 views

Purchasing a domain name and pointing to a dynamic IP [closed]

I designed a small hardware device that will need to periodically check for updates over wifi. I am looking into getting a proper domain name, as currently I am using one of the free ones from noip ...
0 votes
1 answer
102 views

Access home network machine via hosted subdomain

I would like to be able to use a subdomain of my externally hosted website to access a particular port of a machine on my home network. For example, say my domain is example.com, I would like to be ...
3 votes
4 answers
1k views

in-addr.arpa zone delegation in Bind 9 and Samba 4 as an AD DC with DDNS

Environment and goals In my testing KVM lab I have a virtual network 172.16.50/24, in this network I have got 2 Centos 7 VMs running Bind 9 and ISC DHCP servers: Мастер DNS : controller.wsvirt.home (...
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0 votes
1 answer
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Avoid local communication routed outside local network when using public domains

i have set up a server running Nextcloud and some other tools. To be able to access it from outside, i've already set-up DDNS and a DNS Entry for my domain nextcloud.mydomain.com referring to the ...
1 vote
1 answer
194 views

Is it possible to restrict TSIG updates to hosts with a specific prefix in BIND9

I have several windows systems in a Linux network with BIND9 DNS as well as an active directory domain. We do not use the windows domain controllers for DNS. In order to ensure all of the systems are ...
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0 votes
1 answer
143 views

VPN Tunneling through Multiple NAT environment

I currently building a DIY surveillance system based off of a QNAP NAS. The NAS will store the data, control the cameras, and act as a VPN Server for external access. I've managed to get all the the ...
0 votes
1 answer
2k views

How to determine secured ipv6 addr and temporary ipv6 addr? Is it secure to use secured ipv6 addr for DDNS and internet aceess?

I'm setting a linux kernel router, how to determine secured ipv6 addr and temporary ipv6 addr?When I run ifconfig on macOS, it will output like this: inet6 fe80::0000:0000:0000:3e7d%en0 prefixlen 64 ...
0 votes
1 answer
753 views

Router (Synology) translates external IP address to internal

My previous CISCO router (from my ISP) has been changed to Bridged mode, because I wanted to use mine (Synology). Afterwards the internet connection and the subnet worked fine, but my (DDNS) FQDN (...
0 votes
2 answers
1k views

sssd dynamically update DNS

I am trying to figure out how to get SSSD to dynamically update DNS for different domains on a per NIC basis. For instance if I have a server named host.corp.example.com that has 2 NIC's. I would ...
1 vote
3 answers
4k views

using (windows) PowerShell to perform a dynamic DNS update with TSIG to a BIND9 server

I run BIND9 DNS servers and allow Dynamic DNS updates from my customers by using a TSIG key. One of my customers uses only a Windows environment, and therefore PowerShell to run scripts. He wants to ...
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1 vote
0 answers
50 views

Serverless DDNS in an "AWS Like" cloud?

I am on a closed network, usin a derivative of AWS. I have one VPC in 2 Availability Zones, with a small range of IPs. Many of my VMs have dynamically assigned IPs. Right now, my Puppet Master is in ...
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1 vote
0 answers
1k views

Client DNS records not getting updated in Dynamic DNS

I have a RHEL7 machine setup with Dynamic DNS and until few days back it was working fine. However, recently I have started seeing a problem where the DNS records for client machines are not getting ...
-2 votes
1 answer
57 views

D'DNS as Default Gateway [closed]

I need a help! I have router A on 1st location and I have router B on 2nd location - they are miles away !! Can I set DDNS domain name of router A -"server" as default gateway for router B? YES or NO. ...
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1 vote
1 answer
740 views

Can isc-dhcp-server update bind running on a non default port?

I'm running the following on the same server: pi-hole, bind9, isc-dhcp-server and cloudflared (for DNS over HTTPS). The order goes like this: Pihole:53 -> Bind9:54 -> cloudflared:5353 I'm now ...
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3 votes
1 answer
4k views

Is it possible to have name-resolution from Fortigate and local DNS server?

Can you advise on moving to a hybrid DNS? Currently, all our LAN machines receive their IP address from our Fortigate 60D (each machine is either allocated an IP address from the Fortigate DHCP, or ...
0 votes
1 answer
360 views

Apache https redirect only redirects port

Been banging my head on this one for a while, for some reason Apache refuses to properly implement https redirect. I have tried it using a permanent redirect as well as a mod rewrite and everything in ...
3 votes
1 answer
3k views

nsupdate answering SERVFAIL

i've been trying to set up a domain that can be updated. i'm using bind9, i've used ddns-confgen -a hmac-sha512 -k <keyname> to generate my key, i've added the key in /etc/bind/keys.local key ...
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5 votes
0 answers
3k views

BIND: DNS failover and high availability with dynamic updates

I am trying to design a system with 2 servers that act as both DHCP and DNS servers with dynamic updates. I am using ISC DHCP and BIND9. It looks like this. Server1 - DHCP primary and DNS master. IP ...
0 votes
1 answer
259 views

Wildcard subdomain routing from WAN to LAN

My current setup: I don't have a static IP from my ISP, so I run my own ddns on a Google Cloud instance The ddns I'm running is a docker image from https://github.com/dprandzioch/docker-ddns, and I ...
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1 answer
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ngrok[14746]: Incorrect Usage: flag provided but not defined: -domain

I am trying to create ngrok service in Kali Linux following this link:https://amito.me/2016/09/Building-Your-Own-Ngrok-Service-on-CentOS-7/ leafpad /usr/lib/systemd/system/ngrok.service [Unit] ...
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unable to link noip ddns to my kali linux

I registered a domain bookmarks.ddns.net in noip.com website and added to my router => Dynamic DNS Configuration settings Downloaded and installed noip script on kali linux and its changing dynamic ip ...
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1 vote
3 answers
529 views

dhcpd rewrite invalid client hostname for ddns

Im using isc-dhcpd and bind9 to do ddns. It is mostly working, but updates from clients with invalid names, like "leif_opo5" or "Danfoss Connect CC" are rejected. I changed the hostname for my phone ...
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0 votes
1 answer
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No-IP DDNS to My Domain - What DNS Records Do I Have To Add? [closed]

I have a DDNS set up at "example.ddns.net", which is a fixed address I can always find my own server at - but I can't seem to link it with my domain name. I'm using the domain name providers own ...