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Getting different ip addresses for the same hostname

Why do I get different ip addresses for (what seems like) the same host, when resolving a CNAME and its corresponding A records? ❯ host www.github.com www.github.com is an alias for github.com. ** ...
Victor Bouhnik's user avatar
0 votes
1 answer
686 views

Using CNAME to point to other website does not work

I have below domain name registered on Hostinger himanshupoddar.tech I added CNAME record to point my domain to another website "okcredit.com" But it does not work and I am still not being ...
Himanshuman's user avatar
0 votes
1 answer
2k views

How to get access virtual servers from host machine by domain?

I have virtual machine Ubuntu on Windows host machine. On VM there is nginx server with virtual server site.com. VM IP is 127.0.1.1. In VM I edit /etc/hosts: 127.0.1.1 site.com www.site.com And now I ...
m1know's user avatar
  • 1
0 votes
1 answer
624 views

How can I determine which network adapter a device is using for packet emission when attempting to reach a specific IP address using ping?

I have been trying to reach a particular IP and I have not been able to check on which Network Adapter it is using for publishing. Is there any way to check on a particular device to verify whether it ...
Asier_Rodriguez's user avatar
1 vote
0 answers
17 views

Host ID's on Network not in succession of 'active' or established devices?

Disclaimer: I am new to networking. I ran a arp -a command on Terminal to establish what devices are currently active on the network. I was returned a number of devices with Host ID's that were not in ...
BuiltByDan's user avatar
0 votes
1 answer
87 views

How do web clients access vpn protected servers?

I'm not talking about joining the VPN network through a client like OpenVPN, I'm talking about the user's connection to the VPN server, for example: Normal flow: Web Client >>>> Server (No ...
srluccasonline's user avatar
0 votes
1 answer
128 views

Could not resolve host error when trying to reproduce Kyma expose function tutorial

I am trying to setup Kyma for my local k3d cluster by following this https://kyma-project.io/docs/kyma/latest/02-get-started/02-deploy-expose-function/ tutorial. Everything seems to work fine up until ...
kyma-tester-123's user avatar
0 votes
1 answer
46 views

Can't determine my web host, need SSL certificate

The person who created my website is long gone and I need to update the site and get a current SSL certificate. The site has a Weebly logo on the home page, but I have no record of any old or ongoing ...
Queso's user avatar
  • 1
0 votes
2 answers
212 views

Why does wildcard dns entry resolve to a singular hostname?

I'm trying to update my letsencrypt wildcard certificate with certbot, but I noticed it behaved strangly when I ran the command. It said it'd add a subdomain name and remove the wildcard as follows: ...
nyoatype's user avatar
0 votes
2 answers
172 views

How to reach my host from the outside?

Can a local server give services to the internet from a Mac? I have Apache and want to invite a user to see my website coded in my root folder via email. I saw a tutorial on YouTube suggesting this ...
Chauncey Moore's user avatar
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1 answer
2k views

using hostname instead of IP address in vpn [duplicate]

I server noob here and I've a problem at my hand, I've a VPN and there are several VMs connected to it, each host a specific service. These services are running on a specific port (3000,8080). So when ...
Alan's user avatar
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0 votes
1 answer
79 views

How do I get my coworkers to try out my wiki (DokuWiki) with its provided apache server? [closed]

I'm restarting an attempt to make a case for a Wiki at my workplace. Our IT is very difficult to work with and unfortunately, it looks like we will have to do this somehow without installation or ...
Anonymous's user avatar
  • 101
0 votes
2 answers
18k views

How to add http host header in URL?

I have web app deployed in K8 in aws & configured LoadBalancer to call the same from internet. In the Postman I call like , GET https://myteams.myorg.net/config Headers: Host doom.myteams.myorg....
k8dev's user avatar
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0 votes
0 answers
3k views

Cannot ping two computers with each other on the same switch. (Newbie)

I am an absolute 0 in network science and I would like to understand it a little bit. We have an offline machine connected to a switch, which is also connected to a series of other hardware that ...
lexax127's user avatar
1 vote
1 answer
700 views

Will moving my same domain name to new host affect my subdomains?

For an example this is my website www.domain.com. i'm moving to this domain to new host but i already have www.beta.domain.com and beta2.domain.com. If I move my domain to another host it will ...
Naveen Kumar's user avatar
0 votes
1 answer
1k views

Cannot connect to bastion host in AWS

I am following the guide in https://aws-quickstart.s3.amazonaws.com/quickstart-bitnami-wordpress/doc/wordpress-high-availability-by-bitnami-on-the-aws-cloud.pdf to create a WordPress High Availability ...
alancc's user avatar
  • 183
0 votes
1 answer
258 views

Connecting two nodes, dynamic tcp connections tunneling through a central server

Conceptual system in my mind of what i'm looking for: Given two hosts (can be pcs) ! Both can be on dynamic network (dynamic ip)! Both connect to the same central server to find each other! (in my ...
Mohamed Allal's user avatar
0 votes
1 answer
77 views

Why is a host sever location displayed differently?

I am very new to this field, and would like to get an explanation on the mechanism of the below. When I check the location of a host server, sometimes they show the location differently. For example, ...
koyamashinji's user avatar
0 votes
1 answer
1k views

Will /etc/host file entries be transferred to VPN DNS Server?

I have several localhost entries on my local etc/host file. (in Mac "/etc/hosts" and in Windows "C:\Windows\System32\drivers\etc\hosts" # LOCAL DEVELOPMENT 172.16.5.248 maxim.local ...
mahen3d's user avatar
  • 4,522
1 vote
2 answers
3k views

Cannot bind port 111 on docker on WSL2 on windows, but port is (apparently?) currently free

Setup I have this setup: Windows 10 pro with WSL2 with an Ubuntu 20.04 inside. Inside the Ubuntu, I have a running docker engine that has been working perfectly for over during months, exposing ...
Xavi Montero's user avatar
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 ...
CBlew's user avatar
  • 181
0 votes
0 answers
258 views

KVM Ubuntu host - Ubuntu guest: high cpu playing youtube videos

Goal is to lower cpu load in an Ubuntu 20.04.2 vm when playing youtube videos. OS is Ubuntu 20.04.2 for host and kvm guests. Cpu is intel i7-3820qm @ 2.70ghz - ivy bridge - 4 cores - 8 threads. Have ...
Alexander Sofianos's user avatar
1 vote
1 answer
78 views

What are some behaviors/patterns that indicate that a host is degrading?

Student here, I'm wondering how we know that hosts are degrading (specifically EC2 instances)? What are some typical behaviors that could indicate the degradation? I looked through the site and ...
myao's user avatar
  • 13
0 votes
1 answer
645 views

Is there a way to handle host restart for CRON task if the restart frequency is extremely low about once-twice per year?

As mentioned in another question here: Job scheduling using crontab, what will happen when computer is shutdown during that time? that Cron jobs will not work during shutdown/restart case and we can ...
Aadil Hoda's user avatar
1 vote
0 answers
258 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-...
Henk van den Toorn's user avatar
1 vote
0 answers
412 views

Same sysctl kernel parameters for KVM host and guest

I need to set up a KVM guest with the following sysctl kernel parameters: net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 ...
dshykuts's user avatar
0 votes
1 answer
60 views

Workstation virtualization on workstation host

Problem exposition I am a system administrator in our company, and I am currently researching a possible solution for more stable workflow in a our company. Our company is a chain of hundreds general ...
Zoran Jankov's user avatar
8 votes
1 answer
12k views

Why do dig, host and nslookup return different results?

It seems my default (router) DNS server returns different results depending on the tool used to query it. Using dig: $ dig @192.168.1.2 test.example.com ; <<>> DiG 9.16.8-Debian <<&...
Jaap Joris Vens's user avatar
1 vote
1 answer
869 views

Proper way to configuring docker network bridge on the host side

Edit: Note that I'm referring to a single host setup, some local server architecture and not some enterprise-grade backend :D docker network create with the bridge driver creates an actual bridge ...
HLL's user avatar
  • 11
0 votes
1 answer
91 views

Ping server remotely timed out

I recently setup local Ubuntu server to host VS Code and NGINX servers which work fine on codeserver (hostname) and can ping the hostname and IP address remotely. The problem I am facing is that I ...
William Jerome's user avatar
1 vote
1 answer
1k views

HAProxy check host name

We run haproxy as load balancer and to provide backup functionality for our API service. Our API is a Java Application using the Jersey framework running in Apache Tomcat. Some time ago we ran into a ...
mr.simonski's user avatar
1 vote
1 answer
4k views

Where does RewriteCond %{HTTP_HOST} refer to?

I keep seeing website redirection have something like below: RewriteCond %{HTTP_HOST} But where does the HTTP_HOST refer to? Is it referring to the configuration in some files or the CNAME or ...
Petri's user avatar
  • 49
0 votes
1 answer
5k views

UseCanonicalName On applied however host of request header still wasn't change

I had an issue with website redirection and I found that my rewritecond input= 'www.example.com' and my request header host = 'example.com'. So I try to apply UseCanonimalName On in vhost where my ...
Petri's user avatar
  • 49
2 votes
2 answers
3k views

Is a subdomain essentially a host?

I'm trying to understand the difference between a subdomain and a domain in a LAN versus a WAN (Internet). (Or am I just fooling myself. Is it the same?) If I google it I just get that a subdomain is ...
bestprogrammerintheworld's user avatar
1 vote
1 answer
3k views

redis instance restore using dump.rdb is not working

I have redis instance with 10 keys in qa env. the instance is configured to use dump.rdb in /tmp directory . I ran "save" command and saw new dump.rdb file that was created . then I created new ...
alonzo's user avatar
  • 31
0 votes
1 answer
3k views

How to open google.com using curl with Host header (certificate does not match) [closed]

Since Google is using HTTPS/SSL I am unable to access it using the IP of Google.com and passing the Host header. I don't understand why this is not working. Here is what I have tried so far. I got ...
Liga's user avatar
  • 135
1 vote
1 answer
633 views

If I have user/host pair "root@<MyMachineName>", is it necessary to keep "root@localhost" in the mysql host/users table? (multi-part Q)

On computer "dexwin10", the user@host pair is as follows: root@dexwin10 root@% root@localhost When people install our software, we want them to be able to access the database from computers ...
Collin's user avatar
  • 111
0 votes
0 answers
35 views

How to transfer domain to a new Hosting provider while keeping emails on old Hosting provider? [duplicate]

So let's say I have a website hosted in Yahoo Small Business with the domain name of 'website.com' as well as emails associated with the domain name, for instance '[email protected]'. How would I ...
Yap S.'s user avatar
  • 1
0 votes
1 answer
2k views

Why does ping to FQDN fails, but dig succeed?

When I try to ping a certain FQDN, I fail: $ ping test-customer-1.clients.jsonar.com ping: test-customer-1.clients.jsonar.com: Name or service not known However, dig et al. succeeds: $ dig test-...
boardrider's user avatar
  • 1,019
0 votes
1 answer
65 views

Accessing Bottle webserver VM form Host

I have an Ubuntu VirtualBox VM running and Bottle webserver on http://0.0.0.0:8080. How can I access this on my host (OSX)? I want to do this because accessing the web server using FireFox on the VM ...
Liondancer's user avatar
0 votes
1 answer
2k views

What is "the URL" that restricts the Host header?

The following quote from HTTP The Definite Guide assumes "the URL" comes from somewhere and uses it to restrict the Host header. Where does "the URL" come from? Is it from the first line of a HTTP ...
Tim's user avatar
  • 1,527
0 votes
1 answer
4k views

Change http_host fastcgi param with nginx

Context: I've got an application that run under a given domain. But in some cases I need to run it under another domain than the domain it expect (I also change potentially the port). I'm trying to ...
Nek's user avatar
  • 131
0 votes
1 answer
3k views

Creating a Zabbix item on the zabbix server to ping agentless host machine where vm (with agent) runs on

We're working with Zabbix (2.4.7), i'm going to call this the zabbix server. The zabbix server has many machines which it is monitoring. The machines have zabbix agent installed on them. The machines ...
Ankur22's user avatar
  • 111
1 vote
0 answers
1k views

VPN Redirection based on specific domain and IP

I have a VPN connection on my mac and I try to redirect (1) only some IP range and (2) domain throw VPN connection. I achieved to redirect all IP range from 192.168.11.0/24 through VPN by creating a ...
Alexis G's user avatar
  • 121
0 votes
1 answer
7k views

Auto-unpacking WARs doesn't work

I have trouble with auto-unpacking WAR-files in Tomcat. My Host descriptor at server.xml (defaultHost="mp.org"): <Host name="mp.org" appBase="/var/www/mp/target/web/" unpackWARs="true" ...
wcobalt's user avatar
  • 113
-1 votes
1 answer
744 views

Official BIND9 Windows binaries - host.exe, dig.exe - don't do anything

I have downloaded the official BIND 9 Windows binaries from ISC. They don't do anything: $ .\host.exe google.com $ (no output) Same with dig. How do I make host, dig etc work on Windows?
mikemaccana's user avatar
  • 3,540
0 votes
1 answer
70 views

Is it a good idea to point two dns hosts over four servers

I'm trying to add two more DNS servers to our pool to have more reliability under load and avoid losing visitors due to attacks or hardware issues. Since we have many websites setup to point at ns1....
kuteninja's user avatar
2 votes
1 answer
4k views

.htaccess block access when HTTP_HOST is IP (Security)

I have had a lot of attacks on my server. Most start with a vulnerability scan, followed by waves of POST requests. I will soon be implementing Cloudflare (WAF and DDos). This means that a DNS lookup ...
Ryan B's user avatar
  • 21
1 vote
1 answer
2k views

Can I access virtual hosts from one computer directly by their IP address from another without configuring the hosts file?

I set up a couple virtual hosts in order to point to different resources on the network that I want accessible from links on my index page. I set these to ports 81 and 82. On my index page, I link ...
Pawtang's user avatar
  • 13
0 votes
2 answers
5k views

Nagios Disable service check if host unreachable

When I've declared the host, I specified a command to check if my host is alive (simple ping) : hostgroups hostgroup-WIN check_interval 1 retry_interval 1 ...
Amperclock's user avatar

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