Questions tagged [dynamic-dns]

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How to avoid allowing ephemeral port range rule in nftables

I am using Ubuntu 20.04 OS with dnsjava client library to query DNS servers. I have nftables rule in this machine which block all traffic on ports except ephemeral port range 32768-61000 which will be ...
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0 votes
1 answer
90 views

(How) Can I configure a fallback for DDClient?

I want to use the Fritzbox update feature of DDClient, but also want to have a fallback to a public web server, if that does not work for some reason (e.g. cause someone just switched to another ...
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1 answer
160 views

ISC-DHCP-Server removes wrong dynamic DNS-Name from the DNS-Server

I'm using Debian Bullseye to run KVM (Kernel-based Virtual Machine) with two guests vdeb02-10-base and vdeb03-10-base. Both guests have Debian Buster installed. For testing purposes vdeb03-10-base is ...
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  • 496
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0 answers
203 views

How to force ddclient to use only HTTPS?

I'm running ddclient on Arch Linux with Namecheap. I want to force ddclient to use only HTTPS. Ddclient is a Perl client used to update dynamic DNS entries for accounts on 'Dynamic DNS Network ...
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-1 votes
1 answer
286 views

Hostname doesn't resolve to DNS server IP address

I have a home server connected to a router which set to use a DDNS with an integreated provider pointing to a no-ip DNS server. After a power outage my domain can't be reached any longer. Checking ...
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1 vote
1 answer
6k views

Static IP and DHCP Lease in dnsmasq?

I'm setting up a couple of Raspberry Pi's on my router's DMZ (don't worry all the ports are closed); my router uses DNSMasq for DNS and so I added the MAC addresses; hostnames and IPs of the pi's to ...
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  • 4,039
0 votes
2 answers
841 views

Crontab for starting no-IP does not work [closed]

I have problems with my webserver. Normally you start the No-IP-DUC via sudo noip2. I tried to automate it with a cronjob. Using crontab -e, I created this file: # Edit this file to introduce tasks ...
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1 vote
0 answers
632 views

Samba4 Bind9 dynamic DNS Update Error GSS failure

I try to register my DHCP Clients to my Samba 4 based domain controller (DC). For this I followed the guide Configure DHCP to update DNS records with BIND9. I've searched around the internet without ...
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5 votes
1 answer
1k views

How does one automatically update Route53 from a raspberry pi server at home?

A raspberry pi at home running Rasbian Jessie 8.0 is running Apache. Using dig TXT +short o-o.myaddr.l.google.com @ns1.google.com produces an IPv4 that is used to update the value in the record sets ...
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1 vote
2 answers
563 views

Make hostname adapt to local/remote situation

I have set up a local ssh server, which I like to access with this neat alias from my local network: ~/.ssh/config: Host myserver-local HostName 192.168.2.8 User iago-lito Port 22 In order to ...
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1 vote
2 answers
2k views

SSH and ddns: can connect remotely but not locally

I have set up a no-ip account to access my ssh server at home remotely with myserver.ddns.net, which works well.. from outside only. From outside: Remote ping: $ ping myserver.ddns.net # success ...
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  • 2,271
0 votes
2 answers
265 views

How to force machines connected to an AP to use the local AP DNS?

I am sharing documents by running a hotspot in conjonction to dnsmasq that redirect all name queries to an IP <IP> where the documents can be found create_ap wlan0 wlan0 HereAreTheDocuments ...
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  • 4,238
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1 answer
3k views

Purpose of ipv4.dns-option in nmcli

dns-options can be changed for connection name myname to the value value using nmcli con modify myname ipv4.dns-options value Using interactive mode, I get a short description of what dns-options ...
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  • 4,238
2 votes
2 answers
117 views

Trick to create restricted linux user I can remotely control no matter where it connects

Short version: I need to give my 4 yr old son a laptop so that he can skype with me from the other side of the globe. The only help I can expect from his legal guardian is turning the laptop on at the ...
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  • 1,007
0 votes
1 answer
54 views

can a service like isup.me be duplicated on the system for self? [closed]

The Internet or Web as I understand it runs on variety of servers. The browser is the client which gives a URI or URL which tries to go through varied ways to connect to the web-page and render the ...
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5 votes
4 answers
4k views

Is there a way to find self's dynamic public ip address using cli in Debian? [duplicate]

The easiest/simplest understanding of the web is a. When you connect to your ISP, the ISP gives a dyanmic address (like a temporary telephone number) only for the duration of that connection, the ...
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1 vote
1 answer
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Hosted apache2 website visible on internet [closed]

I want to know how do I make a website visible on internet hosted in my local machine using apache2 as a web-server. I'm completely new about this topics, and the thing is (just for practice and learn ...
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0 votes
1 answer
968 views

How to ssh to a computer using a ddns server

I have Duck DNS installed on my linux machine and I want to be able to ssh to it remotely. The thing is I don't understand the port forwarding step. To complicate things, I live in a large house and ...
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1 vote
1 answer
44 views

DDNS unix device in 10.x network

My Internet provider uses NAT network to connect users. So, when I connect to the Internet, I got an 10.x.x.x IP address. Is there any way to access Unix device in such type of network? DDNS needs an ...
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1 vote
0 answers
467 views

Bind9 dynamic zone: where does the delay between update and availability come from?

I have set up a bind9 name server and created a dedicated (internal) subdomain, which can be updated by everybody for whatever purpose. The setup is very in simple and does work in general, but there ...
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2 votes
1 answer
2k views

Bind DNS A Record priority

I am working on 2 scenarios: Scenario 1: DNS A Record with 2 IPs [Default it works on Round Robin], but I am looking for option where if First IP not reachable then share 2nd IP. Scenario 2: DNS A ...
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  • 190
2 votes
2 answers
102 views

ssh and VNC connections are directed back to the original machine by dynamic DNS server

First question I've asked here so please forgive me if I accidentally break a rule. I recently set up an ssh server on my home machine, and am using ddclient to keep the dynamic DNS service at ...
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1 vote
0 answers
141 views

Is dynamic DNS the only possible way to establish a connection between two routers with temporally IPs?

the situation is as follows. My and my friends Pcs are connected within a WLAN with a local IP to a router, the router gets its global IP from different ISP with a limited pool of IPs, so the ISPs ...
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2 votes
0 answers
706 views

How to set the remote host to a domain name with dynamic IP in *swan client?

I am now setting a vpn client for my university's own L2TP/IPSec VPN network, using both openswan, libreswan and strongswan (for different distros). Here is the problem: The remote site (VPN server) ...
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169 views

Port forwarding Configuration for Webcam

I have a webcam which is streaming via mjpg-streamer on http://localhoste:8121/?action=stream. Now, I'm wishing to access the camera from outside. I'm using an DDNS system and now I have a domain name ...
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1 vote
1 answer
63 views

Visitors cannot reach my local Apache server

I have a machine running the client of noip to provide dynamic DNS. This machine is in a network where I put its ip on the DMZ because I want visitors acessing its services. I am succesfull on ...
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0 votes
1 answer
239 views

Hardware configuration required for DNS server

How can I know Hardware configuration required for DNS server: What will be the expected QPS (Queries Per Second) on the server. 5/Sec and peak time 10-20/Sec How many hosts will be ...
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3 votes
2 answers
2k views

Running my own dynamic DNS record hosting

I intend to run a debian server at home, it will host various websites, SSH server and email. I have a dynamic IP address and I am unwilling to pay the extra for a static IP. I was thinking I could ...
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1 vote
1 answer
362 views

DDNS (dynamic-dns) setup and adding a hostname to a device (to be visible on the network)

How do I provide a fixed Hostname to my device so that a netscan can shows up the device name across all platforms? How can I reach the device using the hostname/MAC-ID (something which is fixed) ...
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1 vote
1 answer
77 views

how to ensure stable domain names for newly-provisioned cloud server instances?

I've been playing with server configuration management tool Ansible, whose use often depends on reference to a local inventory file containing arbitrary host names. For example, # file: my_hosts [...
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2 votes
1 answer
675 views

SSH Setup - How will the router know my computer's ip?

I'm very new to the networking side of the house and am trying to set up SSH on my new Ubuntu machine. I have my DD-WRT router working with DDNS now and can log in to the router page -- but I'm not ...
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1 vote
0 answers
106 views

Deliver emails outside network, from a server behind router DNS and port forwarding

I've been trying to configure webserver to deliver emails outside the local network. Server is connected directly to the router and relay on its DNS service, and one of that online service for resolve ...
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45 votes
8 answers
83k views

UFW: Allow traffic only from a domain with dynamic IP address

I run a VPS which I would like to secure using UFW, allowing connections only to port 80. However, in order to be able to administer it remotely, I need to keep port 22 open and make it reachable from ...
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0 votes
1 answer
718 views

Apache subdomain can not be resolved

<VirtualHost *:80> ServerAdmin webmaster@localhost ServerName domain.no-ip.org ServerAlias www.domain.no-ip.org DocumentRoot /var/www/main ErrorLog /var/log/apache2/error....
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0 votes
2 answers
257 views

DenyHosts and no-ip.com

I recently installed DenyHosts and after a few remote logins I noticed that sshd: 8.23.224.110 had been added to the host.deny file after /var/log/auth.log showed a few sshd: Did not receive ...
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7 votes
7 answers
32k views

Make nslookup use specific interface

On my computer I have two network cards. Both are using different Internet Providers service. Both Internet service provider have different DNS server and their IP address are known to me. I want to ...
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2 votes
2 answers
2k views

redirect web server with no-ip and port forwarding in livebox

I want my Apache web server running on a Livebox (home router appliance running Linux) to be accessible from the Internet (WAN). I installed and configured the application noip2 on my Ubuntu PC. ...
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  • 453
2 votes
3 answers
4k views

How can my server detect IP changes in order to notify my dynamic-DNS provider?

Just set up ubuntu server, which has a dynamic ip. I am looking for a way to keep my dns server updated. Im using entrydns to do this and they provide the following command to update the server. curl ...
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23 votes
4 answers
86k views

How to find out if Ubuntu is using DHCP (Ubuntu 12.04 LTS GUI)

How can I find out if my IP address is DHCP, Fixed or Dynamic? I need to tell my network administrator what the IP address is, that my Virtual Machine is using. I know the numbers, but I don't know ...
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  • 3,054
6 votes
3 answers
20k views

How to create a custom dynamic DNS solution?

You all probably know commercial dynamic DNS providers like dyndns.org or no-ip.com. But how to create a similar service for just a handful of machines? What server software would be best suited for ...
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  • 52.9k
3 votes
1 answer
6k views

Hosts file on server with dynamic DNS?

I am setting up a RHEL-based server that is associated with dynamic DNS from DynDNS, with a domain of, say, "abc.dyndns.org" that is dynamically updated with the server's IP address. I have read that ...
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  • 4,327