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Questions tagged [dynamic-dns]

118 questions
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Pointing domain to dynamic IP address

I have a site, www.example.com hosted with a company. I have created a subdomain, sub.example.com and would like it to point to a different server. I have the required ports forwarded for server access, although I am unsure how to set up what I…
tombull89
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Dynamically register hostnames on DNS server (via DHCP)

I want to set up a small network, where a central DHCP server leases IPv4 addresses to the clients. The clients already have their hostnames set and should advertise those to the central DNS server, so both the server and all clients can find each…
a.ilchinger
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How can you de-couple DNS server from the AD Domain Controller?

I have an environment where Active Directory Domain Controllers host their own DNS domains (as is common). However we are trying to separate DNS and host it on a standalone server (to eventually move to Linux Bind, but for now just the decoupling) I…
madacoda
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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 Windows AD integrated DNS environment. I need some…
Impossible
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Why does nsupdate fail with "operation canceled"?

I'm trying to dynamically update a DNS server using nsupdate, running nsupdate -k mykey.private -d -v ./my-nsupdate-commands.txt. But I get the error: Communication with 192.0.2.0#53 failed: operation canceled In which cases can nsupdate result in…
nh2
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How does MS DHCP server decide which DNS server to try to dynamically update?

In MS DHCP, under Scope Properties, on the DNS tab, it says: You can setup the DHCP server to automatically update authoritative DNS servers with the host (A) and pointer (PTR) records of DHCP clients. And there are several options relating to…
Jonathon Reinhart
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Allow connections to apache from a dynamic IP

When setting up an Apache server, it's obviously possible to allow connections from a specific IP address [/range]. I have a dynamic IP and I'm wondering, if I use a DDNS service, whether it's possible to allow connections if the incoming IP matches…
AJ.
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ddclient Returns 7000 Error Connecting to Cloudflare

I am setting up DDNS using ddclient. I have searched the web, and nothing seems to help. I looked up examples, and I don't see what's going wrong. I tried using both api.cloudflare.com/client/v4 and www.cloudflare.com. I am recieving these error…
ARI FISHER
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Domain Name Routing Across Multiple Varying Servers

How can you use one public IP address to host multiple domain names that span across multiple servers in your LAN? Let's say I have 5 web servers, serving 5 different domain names, using 5 different server-side technologies, and I currently have 5…
LonnieBest
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How to access a network behind a NATing DSL modem and a NATing Firewall?

Here's the scoop: DSL router with dynamic WAN IP servicing up NATed DHCP connected to the WAN port on a Sonicwall firewall which is then serving up its own NATed network. Is it possible, knowing the public IP address (e.g. via dyndns) to access…
Rhett
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ssl (letsencrypt) for the following scheme: server (dynamic ip) -> ddns (no-ip) -> cloudflare -> hostname

My setup is as follows: Dedicated server (Linux) with dynamic IP address NO-IP domain name domain name When I want to access my system (server), I access my domain, which redirects me to my NO-IP domain which, in turn, redirects to a current IP…
CorellianAle
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How can I specify mail "MX" records on the "A" record server

My internet provider automatically creates a dynamic dns that points a name like client120.example.com to my dynamic ip address. I see this is done by replying with a DNS "A" record containing my IP. Is it possible on my local bind server to specify…
adrianTNT
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VPN to dynamic IP behind a Comcast modem

I previously had my Windows server, which handles VPN, on a static IP. However, I just moved and I can only get Comcast (CenturyLink doesn't have fiber into our area yet). And Comcast is all dynamic IP. The Comcast tech claimed that any packet that…
David Thielen
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Can I tell Windows to only dynamically register A records in DNS and not PTRs?

We have 2 DNS domains: example.com, and various in-addr.arpa zones hosted by our ISP. Dynamic updates are not allowed. example.local and various in-addr.arpa zones for our private networks, hosted internally and used for AD, dynamic updates…
ThatGraemeGuy
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Nginx reverse proxy arbitrary directory to subdomain

We currently use Nginx as a reverse proxy in front of several IOT devices to access them from outside our internal network. Up until now, I've statically mapped a location to each device's interal IP address. We're adding several devices that use…
Brice Hughes
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