All Questions
Tagged with domain-name-system ip
313
questions
0
votes
0
answers
32
views
How to Set Up a Server to Route Local and Global Requests to Different Web Servers (Server1 and Server2)
I have 2 Servers (Server1 & Server2) where is each one should have a web application on its own
and I have a centralized server (for example DNS Server)
The Centralized server receives a URL ...
- 11
0
votes
0
answers
136
views
Why are my DNS query responses from Technitium failing to make it back to my kubernetes container?
I've explored every nook and cranny I can imagine, and I can't figure out what's going wrong.
I've got a k3s setup on my server where I'm hosting technitium in hostNetwork mode. Technitium is ...
- 1
0
votes
1
answer
139
views
Is my traffic to my Synology leaving my network?
I have a Synology DS723+. I currently have it port forwarded and set up using the Synology dynamic DNS service. It works great, I can access it from outside my network with no problem. However, I ...
- 103
0
votes
1
answer
197
views
Private IP being used in public DNS [closed]
I recently was working on a problem for a user at work. The basic problem was they had a bank scanner that connects directly to the bank but it wasnt working on our network.
The domain name was usb....
0
votes
1
answer
49
views
If I relocate my website's server (changing the IP in the process), will my users be able to access it under the same domain?
If I first publish my website from my server which is in city A, and then move this server to city B (which I expect to change its IP address), will the website's users still be able to access it ...
- 3
0
votes
0
answers
97
views
Trying to access to my server's Cpanel (<server_ip>:2083) gets resolved as localhost:2083, not found
I'm currently working on a Linode Ubuntu 20.04 VPS with a cPanel installation. Upon trying to access to the control panel (<server_ip>:2083), the browser resolves the IP to localhost:2083 and ...
- 101
0
votes
2
answers
408
views
How does DNS work with websites that have large traffic and multiple servers? [closed]
Based on what I learned from CS50x, each computer on the internet has its own unique public IP address. Some computers are used on the client-side to access websites, while other computers are used as ...
- 1
1
vote
0
answers
75
views
Can I use commercial VPN service with optional Dedicated IP to Host a Website?
Many commercial VPN service providers offer a new option called "Dedicated IP." While I understand the purpose is to get around geoblocks of streaming services and to defeat their VPN ...
- 11
1
vote
0
answers
2k
views
is there a way on Linux to set DNS servers using a cmd line?
I use a script that creates multiple network interfaces with IP adresses. An example of commands used by the script:
ip addr flush eth0
ip addr flush eth1
ip addr add 192.168.1.10 dev eth0 route add ...
- 11
0
votes
1
answer
163
views
one ip resolving 2 websites - Ubuntu 20.04 configuation to allow specific domain
So, I recently setup digital ocean droplet with Ubuntu 20.04 with nginx web server. I one website default say example.com usinh nginx settings and then the IP of digital ocean as a record in domain ...
0
votes
1
answer
138
views
How to find out DNS Server IP of other ISPs
I am currently building a tool that needs the response from multiple different DNS Servers. The programming part is all done but I am currently lacking the IP Addresses of major ISP DNS Servers. All I ...
0
votes
1
answer
467
views
Deny direct IP access to an application deployed in Kubernetes
I have a NodeJS application with express.js as a backend framework deployed on cloud using Kubernetes. The K8s runs on top of an Ubuntu template. The application deployed in Kubernetes is of service ...
- 53
0
votes
1
answer
70
views
Why the IP cannot be used directly when the IP mapped to the host name as a host entry works?
I was given an API for a service through which I tried to send a post message from server A, but the connection cannot be built. Then I ping the domain name in the API. It doesn't work, so I thought ...
- 113
4
votes
2
answers
2k
views
2 Different Public Address for High Availability
this is my first time asking a question here, and I was wondering is it possible to have two different ISP public IPs connected to a single system for high availability?
for example, if our ISP 1 ...
0
votes
2
answers
229
views
Why does facebook only have 2 IP addresses? [closed]
In the process of setting up DNS for my own website I got curious about looking up a large company's DNS record. I chose facebook.com and used dnschecker.org to view their dns record.
Ignoring AAAA ...
- 11
0
votes
1
answer
68
views
How do Virtual IPs allow fast switching?
I am designing a simple fail over system with just a primary and standby server. The main one will be in our office, while the standby will be on the cloud. I was reading about virtual IPs and how ...
- 1,345
0
votes
1
answer
394
views
How to create TCP proxy that supports multiple hosts?
I would like to create a TCP proxy that supports multiple hosts. The example I saw was where a DNS server was used to point a specific host to a TCP proxy which had the host hardcoded in it. The TCP ...
0
votes
1
answer
107
views
Decoupling IP address from hosting provider
We run a service that provides on demand websites to our users as part of our offering. In order for our users to use their own domain with our website feature, we have them create an A record to our ...
- 639
0
votes
1
answer
2k
views
How to accept request with port after domain in nginx
I have a subdomain https://test.shop.com, I'm running a Nginx server and it's working fine. But I have to accept the request with https://test.shop.com:8080/graphql/ and redirect to http://127.0.0.1:...
1
vote
1
answer
801
views
AWS EC2 Elastic IP vs Public DNS Hostname?
What is a better approach for a webserver using EC2: to use its public DNS hostname as a CNAME record, or to attach an Elastic IP to it and use it with an A record? I suppose using the (elastic ip) A ...
- 113
1
vote
1
answer
68
views
In a recursive DNA query procedure, if a local DNS server needs to query root DNS servers, how does it know/get their IP addresses? [closed]
I am taking a computer networks class, and was wondering how a local DNS server knows the root DNS servers' IP addresses when querying them. I am assuming that since this is the root server, maybe ...
- 19
0
votes
3
answers
1k
views
Hide server IP for user's DNS record
I am starting a web hosting service using my own server. Are there any possible ways to cover my IP address for users to point their DNS? For example, my server's IP is 12.34.46.78 but I want the user ...
- 1
4
votes
2
answers
2k
views
When 'dig' returns a single A record, the IP address changes between calls. What is this a sign of?
In my internal work network, whenever I launch dig against a particular hostname, I get result similar to this:
;; ANSWER SECTION:
some.internal.host.com. 10 IN A 10.210.54.121
If I keep ...
- 181
0
votes
2
answers
3k
views
How to point external DNS record to GCP VM instance without static external IP?
I have many VMs in Google Cloud that are required seldomly for debugging. Running them all the time would cost quite a lot, so they're shutdown most of the time. The problem is that Ephemeral IP ...
google-cloud-platform
0
votes
0
answers
539
views
Updating IP in FreeDNS eg. in 5 seconds instead of an hour via script
Like the title says. At freedns.afraid.org website interface I can set the TTL if I'm premium. But how can I set it to 5s instead of the default 1h using/extending this script:
#!/bin/sh
#FreeDNS ...
- 1
0
votes
0
answers
376
views
Nginx/Apache2 serves content to IP address but not to domain name, using Hetzner
I've tried this with both apache and nginx servers (separately, not at the same time). Both default servers have served content properly to the IP address but not to the domain name "b-t.dev"...
- 155
0
votes
1
answer
467
views
Cannot to connect to my website in local network IIS (SSL) with another PC
I'm working to a project ASP.NET core, I have created an SSL certificate for HTTPS and it's working, but only on my PC.
I have created a "fake" DNS so if on my PC I write my.site.com:7001 it'...
- 3
-2
votes
3
answers
2k
views
DNS and OSI Layer Working
I would like to clarify a doubt that's haunting me after learning DNS.
I'll briefly write it as a question.
"A user was watching a video in youtube and suddenly the DNS server which was used by ...
- 11
0
votes
1
answer
477
views
Authoritative DNS for subdomain with dynamic IP [closed]
Is it possible to have an authoritative dns server that I host on my server that has a dynamic IP?
I use a dynamic dns client to update my IP with namecheap but want to have a DNS server I control as ...
- 11
1
vote
1
answer
55
views
Serving HTTP traffic from a controllable IP address / data center
Consider a company that wants to provide HTTP services regionally from a dynamic data center of their choice for a given set of users or IP addresses (e.g. for latency management purposes) under a ...
- 125
2
votes
1
answer
2k
views
What does "localhost name resolution is handled within DNS itself" mean?
I know that the Windows hosts file maps host names to IP addresses. But there is no mapping for localhost. Instead it has a comment that says this:
# localhost name resolution is handled within DNS ...
- 135
3
votes
2
answers
8k
views
Wireguard VPN connection not resolving local host names
I have setup a Wireguard VPN on my raspberry pi and I can connect to it via client app on my mobile phone. I can access the internet though the phone and I confirm that the phone is using the same IP ...
- 191
0
votes
1
answer
175
views
Generate DNS zone redirecting subdomains to IP subnet
I created DNS zone as in example below. Is there another, clean way to redirect subdomains to IP address? Maybe with bind9 $GENERATE? Can I use regex or iteration with existing DNS software? Where to ...
- 101
0
votes
1
answer
1k
views
Is it possible to know the location of an Anycast IP since they can be at multiple places at the same time?
With a Unicast IP we can know the geographical location of an IP address easily. But an Anycast IP address can be at multiple locations at the same time and depending on how close you are to the ...
- 135
10
votes
2
answers
25k
views
What enables Cloudflare to disable direct IP address access? [closed]
When I visit a website that has Cloudflare, using the website's IP address, I get this message:
Error 1003
Direct IP access not allowed
What happened?
You've requested an IP address that is part of ...
- 225
0
votes
1
answer
804
views
How does Google return a different A record every time? [closed]
I used the DNS lookup tool too find the Name Server and A Records entries for www.google.com
Here is what it said
www.google.com results
ns2.google.com
IN 172.217.15.68
It showed a single A ...
- 135
0
votes
1
answer
205
views
Can't use domain name to access mail server from outside LAN
Thanks for the assistance with my last post, it was able to work itself out nicely. Now I have another issue...
I have got an A DNS record setup pointing mail.melia.tech to my public IP address
I ...
0
votes
0
answers
135
views
mail server mx record only shows dns ip
I am trying to setup BIND9 (Master and Slave DNS Servers), which I have done, and it is working as it should be (I believe). I can dig the domain name I am using and IPs and extract all the neccessary ...
-1
votes
2
answers
1k
views
How can I point my custom domain to a google cloud instance
So, I got a domain, suputamadre.es
I launched a google cloud instance and assigned an IP to it, say 1.2.3.4
I launched my django server to listen on 0.0.0.0:80
I try to connect by going on chrome ...
0
votes
0
answers
5k
views
CentOS 8 does not resolve DNS
Here is the very strange issue with freshly installed CentOS 8.0
I configured static IP with nmcli which essentially using NetworkManager. So turning it of is not an option as I want to follow RedHat'...
- 1
0
votes
1
answer
133
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 ...
- 103
0
votes
1
answer
628
views
Does a reverse proxy use subdomains to know which private IP to route to?
I know this is very basic, but I'm very new to the reverse proxy, network admin world. Could someone provide a high level overview how a reverse proxy knows which server/port to route traffic to? Does ...
- 103
-1
votes
1
answer
284
views
DNS propagation taking over two months
Two months ago I registered bunch of expired domains and set new nameservers to them just like I've done before. Never had any issues.
For some reason the DNS propagation never finished with these ...
- 1
0
votes
1
answer
176
views
Different IP for same FQDN using different resolver
For my domain gobudgie.ml I get different IPs on different DNS resolver eg.:
[email protected] (Default):
jasmich.ml. 964 IN A 31.17.211.88
ja[email protected] (CloudFlare):
jasmich.ml. ...
-2
votes
1
answer
182
views
why my Authoritative DNS Server on Ubuntu 18.04 not working after server ip changed? [closed]
I have an Ubuntu 18.04 VPS server that I ran both authoritative DNS and web server on it.
I use BIND 9.11.3-1ubuntu1.9-Ubuntu for DNS system.
Everything was just fine until for some reason I had to ...
- 1
-2
votes
1
answer
399
views
How does Shopify manage hundreds of thousands domains to one IP [closed]
I am wondering how does Shopify routes and provides SSL certificates for the hundred of thousands of domains that are pointed to their IP Address 23.227.38.32.I am trying to build a similar service as ...
0
votes
2
answers
145
views
Different DNS resolution for multiple IPs
Greeting's, I am trying to configure different DNS resolutions for:
maniarfamily.com -- I want maniarfamily.com (or www.maniarfamily.com / https://www.maniarfamily.com) to point to Wix (23.236.62.147)...
- 131
-1
votes
1
answer
103
views
How to architect custom domain functionality
I am looking at Tumblr's Custom Domain feature.
It shows 66.6.44.4 as the IP address for an A record, and domains.tumblr.com for a CNAME.
I would like to have the following functionality. If users ...
- 111
0
votes
2
answers
2k
views
Why can I access my website external to my network by IP but not URL?
I'm having an issue accessing my website (heatcool.com) from outside of my network by URL.
Server Environment: Windows Server
Here's what I know:
1) I CAN access within my network by IPV4 IP, ...
- 113
0
votes
2
answers
12k
views
How to hide web server IP?
We have a Windows server with 100+ websites hosted on it.
Some tools like whoishostingthis.com provide hosting provider's name and tools like domaintools.com provide domain names of websites hosted ...
- 11