Questions tagged [ddns]

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1answer
42 views

Purchasing a domain name and pointing to a dynamic IP

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 ...
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0answers
15 views

Bind: no notify to slave servers if update-policy is set

We have configure a two master zones: zone "my.domain.tld" in { type master; allow-transfer { local; secondaries; }; allow-query { local; secondaries; }; also-...
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1answer
34 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
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4answers
374 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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0answers
104 views

pfSense - can't connect to server from LAN with DDNS address

I've tried looking for a solution to this, but I'm honestly at a loss for what to search for. I'm using pfSense with a separate LAN and DMZ with several port forwarding rules. I'm hosting a service I ...
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1answer
48 views

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
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1answer
41 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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1answer
37 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 ...
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1answer
568 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 ...
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1answer
368 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 (...
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2answers
531 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 ...
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3answers
933 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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0answers
48 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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0answers
551 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 ...
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1answer
36 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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1answer
367 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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1answer
2k 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 ...
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1answer
115 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 ...
2
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1answer
2k 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 ...
3
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0answers
1k 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 ...
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1answer
98 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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1answer
850 views

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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0answers
166 views

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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2answers
331 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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1answer
114 views

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 ...
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2answers
37 views

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. ...
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1answer
4k views

Unable to add forward map …: SERVFAIL

DHCPD[4.3.5] error: Unable to add forward map from nvhenz710.hen.mentats.us to 172.24.1.31: SERVFAIL no errs in BIND 9.11.1-P2-RedHat-9.11.1-2.P2.fc26 $ groups named dhcpd named : named dhcpd ...
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0answers
277 views

Master DNS cannot be resolved when using nsupdate

I want to register a client at a local DNS-Server using nsupdate (Raspbian GNU/Linux 8.0 jessie 4.1.19-v7+) > nsupdate -d > update add lea02.example.local 600 a 10.132.34.32 The Response ...
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2answers
1k views

dynamically updating zone subdomains

I'm running a bind9 (9.9.5) DNS-server (on Debian/jessie). I have configured one zone to allow dynamic updates, and would like to add TXT records for specific hosts within that zone. Here's a sample ...
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2answers
2k views

How can I connect remotely to our network from behind a double NAT?

Having successfully set up my home office network for remote access via OpenVPN, I would now like to do the same thing at work, however I am double natted. There is a central router maintained by ...
1
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1answer
309 views

DHCP removing existing DNS records when asked for leases and none are available

I'm having a problem with my Dynamic DNS and DHCP setup where clients requesting leases when none are available causes a cascading failure where existing clients have their forward and reverse DNS ...
3
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2answers
15k views

bind: “nsupdate -l” failed with status “update failed: REFUSED”

I just switched to bind 9.9.5 dynamic DNS feature with semi-automatic manage of DNSSEC entries, the whole process went good and my zone files were updated well, but now I can't update or add entries ...
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1answer
141 views

Juniper SSG5 DDNS https socket creation failed

I have a Juniper SSG5 firewall, Version: 6.3.0r19.0, that is on a dynamic IP. We are using DDNS service from dyndns. The service is supported by the SSG device. There has been no problems getting it ...
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1answer
221 views

2 servers behind single IP using DD-WRT and Dynamic DNS [closed]

I current have a single server running at home. I use freedns.afraid.org to route the domain name to my current ip. I wish to setup an additional server on a separate domain. How best to achieve it ...
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1answer
40 views

Multiple Physical (and Virtual) servers (mail, web, etc.) on single link. Can I use DDNS to use top level domains to each box? [closed]

This all started last year when I switched to a LISP based solution for my old "C" address block without the expense of T1 lines. I have a cable link and a dsl link into my Cisco 2800 that then ...
2
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1answer
9k views

DHCP Server Not Registering PTR Records

I've got a DHCP server that's configured to "Always dynamically update DNS records". Unfortunately, it's not doing its job. The client sends an Option 81 with its FQDN and all flags at 0. The ACK back ...
1
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1answer
177 views

Expose a machine on the far side of a VPN

We're using a VPN to connect a remote office to our main office, and a machine in the remote office needs to expose port 22 to the outside internet. Complications: The main office has a fixed IP ...
1
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1answer
457 views

Asterisk and FXO issue over DDNS

I've been experimenting with asteriskNow (freePBX/asterisk 11) as a sip server with DDNS. Everything seems to be working fine using externhost and such; calls to remote extensions to and from asterisk ...
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0answers
546 views

Cisco 3560-X and Bind9 DDNS integration

Experts, In an infrastructure I'm currently working on, we have one Cisco 3560-X as a core switch and an internal Bind9 DNS server. The 3560 is acting as the DHCP server. BIND9 currently has names of ...
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1answer
131 views

Supporting writes on bind9 failover

I want to set up a redundant DNS based on Bind9, including failover for write operations. I have DHCP dynamically update DNS based on client hostnames, and I need this functionality to continue to ...
1
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1answer
1k views

Digital Ocean and dynamic DNS [closed]

We are migrating production website from AWS to Digital Ocean, and currently our main concern is static IP that DO provides for droplets. In case of droplet failure our static IP address would be ...
1
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1answer
480 views

Multi-homed forward zone DDNS updates always sent out the same network interface

I have a multi-homed server 'dhcp1' with network interfaces '192.168.10.151' (eth0) and '192.168.0.151' (eth1). The machine is attempting to use DDNS with a name server 'ns1' having network interfaces ...
2
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1answer
6k views

ISC DHCP server not dynamically updating DNS

I have an Ubuntu 14.04 server, running an isc_dhcp_server and the bind9 DNS server. Bind acts as a cache, and it maintains the .m domain (and zone) on my local network. The server's address is 10.0.0....
4
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0answers
711 views

Some systems not attempting to register IPv6 reverse

I have a few Windows 2012 systems in my domain that are not dynamically updating their records in the ip6.arpa zone for their assigned IPv6 addresses. I have systems that are publishing their record ...
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1answer
152 views

Public dynamic IP address [closed]

I have buy a domain from http://www.domain.com, but i have problem updating my newly given IP address from ISP every 14h. So i know that DynDNS have this service but i dont know if it work with ...
6
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2answers
24k views

DDNS, BIND and leftover .jnl files

I have configured BIND and ISC DHCPD to work together (using keys for updates). Now it's not that it does not work at all: forward maps etc are most often added. However, very often, for no apparent ...
1
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1answer
4k views

ddns correct setting for dhcpd.conf and ifcfg file with regards to hostname

I have recently set up dynamic dns with ISC dhcpd 4 and bind 9. Everything is working as it should except for a handful of hosts on the network which don't resolve. Upon investigating I found they had ...
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2answers
3k views

Multiple subnets on isc-dhcp-server using ddns with bind9

On my network I have two subnets: 10.100.1.0/24 -> Wired/wireless 10.100.7.0/24 -> VPN Both subnets are served by isc-dhcp-server running on a Debian VM. This same VM runs bind9 for my DNS. ISC-DHCP-...
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2answers
1k views

How to programmatically determine dynamic IP from behind a subnet [duplicate]

Sorry for the noob question, but I'm trying to hack together an ad hoc dynamic dns to reliably connect two machines in different geographic regions. My issue is every command I try (ifconfig, iwconfig,...
1
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1answer
373 views

Multiple DNS mappings for a host via DDNS

I have a network in which DNS is automatically updated with a record for hosts when they get an address via DHCP (isc-dhcp-server & Bind configured with DDNS updates). The DHCP server is ...