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Questions tagged [dns]

Translates domain names to IP addresses. DNS stands for Domain Name System.

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DNS service crashing in Windows 10 with large HOSTS file

I don't get why my Android device handles a large hosts file just fine, but if I try to use a similarly-sized file in Windows 10, the DNS Service starts using a massive amount of CPU and slows ...
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1answer
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Regarding Dns VPN related

We are providing remote IT support to client X from our office. To connect to client X's network we were using Cisco vpn on individual computers. But today all of the sudden our office management ...
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How to find bottleneck for parallel curl command?

I got curl runing like this: parallel -j0 curl -x 10.9.8.4:8080 --retry 1 --connect-timeout 3 -I https://{} --output {} which results in 1000 parallel jobs. I've already incereased ulimit -n to 4096 ...
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Setting up a public static IP address for my authoritative DNS server to resell domains [on hold]

I want to start reselling domain names (ccTLD) and to be able to become an authorized reseller for .MA domains I am required to have my own DNS server (according to ANRT-The regulatory agency for .MA ...
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15 views

Hiding IP Address/Geo Location Spoofing, VPN, Proxy, Proxy DNS or something else?

Let me explain the scenario. I am in country B, I have a subscription to the software that must be used while residing within Country A. In case of violation they will ban my subscription forever. ...
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router client table drops my hostname after some time

my router recognises my device hostname when I restart the device or the router. It appears on the routers client list. The router uses DHCP. After a while the hostname of my device disappears from ...
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1answer
61 views
+50

Local hostname not working without the trailing dot

I noticed all my local hostnames have a trailing dot at the end when I use some LAN scan tool on my Android phone. And without it, I can't get a ping to work from my Windows desktop (it works fine ...
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11 views

Prevent DNSMasq from forwarding host names to external DNS

I have configured DNSMasq to serve as the DNS for my local network. However, I have also connected some of my client machines to a VPN. When trying to resolve hostnames across the VPN, an external DNS ...
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1answer
19 views

Procedure for setting up FTP using domain name on home server

There are lots of excellent articles relating to the setup of FTP, DNS, Windows Server 2016, domain names and routers. What I am looking for is a procedure to link them all together for my home ...
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1answer
36 views

Local DNS to resolve intranet address

My question is: I have a Windows 7 PC connected to Intranet, with DNS and everything is working normal. (Using wireless connection). I want to install DNS server on this PC, working on Ethernet ...
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1answer
26 views

Can connect (telnet, dovecot etc) to my own server from an external network but not when I am on the same lan

I have a server (mail - postfix+dovecot, web - apache) on a kvm guest where the host is on a local network behind a normal router (zte or whatever the ISP provided). KVM guest has an IP on the same ...
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How can I forward queries from a DNS to another depending on the IP address?

I set two DNS servers using bind9 which recieve queries from other PCs on a LAN. Both pc's have their own domain and so far I managed to make the main server redirect queries to the backup one if ...
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19 views

Switch ISPs and lost internet connection on debian server

Version root@server:~# cat /etc/debian_version 8.11 Can't resolve host names root@server:~# ping www.google.com ping: unknown host www.google.com ifconfig -a root@server:/# ifconfig -a docker0 ...
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2answers
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More on Supposedly Dynamic IPs

There are a few reasons why I'd like to be able to change my ip address, and none is shady. Here's one reason: I do a fair amount of internet research. On one project, I found that I was blocked from ...
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How do I force Firefox to trust local DNS resolved on MacOS?

I have problems where Firefox magically decides to resolve some internal addresses using different resolvers than the default one specified by MacOS (Mojave). DNS resolutions works well in current ...
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1answer
21 views

How do I clear the DNS cache in Windows 10 version 1709? [duplicate]

Probably the easiest way to clear the cache would be to restart the DNS Client service, but the option is grayed out even if I load the Services window as SYSTEM through PsExec. If I use something ...
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Enable Firefox DNS over HTTPS breaks every site

I have been trying to play around with the DNS over HTTPS feature that has rolled out to firefox browsers. I have tried both Firefox 63, and the Nightly 65 release. I set network.trr.mode = 3, and ...
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1answer
24 views

Can ISP see name resolution when i use OpenDNS or Cloudflare DNS?

I used OpenVPN tunneling for privacy from my ISP for a long time now. But recently ive run into an issue where my DNS over the VPN goes to the wrong internal IP. So I've decided to not block outside ...
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2answers
793 views

DNS resolution, Browser navigation, and cache

I know NS update could take over 24h. However during this process there is something that intrigues me. I can't change ISP router's DNS so I set WAN/LAN to use Google Public DNS The process scenario:...
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20 views

Nmap -p port ip shows STATE: FIltered

I am setting up the BIND9 DNS server. On my machine, everything works, it shows open STATE. nmap -p 53 IP Starting Nmap 7.60 ( https://nmap.org ) at 2018-11-29 11:32 EET Nmap scan report for DNS ...
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9 views

Move to another email server by changing the DNS entry [migrated]

I ended up in charge of an email migration. My company wants to migrate from their own privately hosted email server to an office 365 server. This is not about saving the old emails on the old server. ...
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1answer
60 views

How to setup 2 services with same DNS?

I had 2 service on a server that run on 2 different port. one of them on port 80 and another on port 3000. I want to address them with same DNS like this: http://xxx.ttt.yy : the one that run on port ...
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1answer
28 views

Private DNS - Global Resolution

I understand that it's a reasonably simple matter to place Bind9 on one of my servers and use that to resolve requests for subdomains on my network. However, is it possible to install Bind9 on one of ...
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49 views

How to make a proxy cache open several connections?

I've installed a proxy cache based on https://github.com/bntjah/lancache . Some things are different in my setup, i'm using a second server for DNS which is using DNSmasq. The problem is, that non-...
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1answer
22 views

How to setup inbound email correctly? MX settings?

Summary So I have mostly set up hosting emails. I can send mails from my phone through IMAP with my new server however I never receive any mail. I have tried the following: telnet localhost 2525 ...
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8 views

RHEL-7 OpenVPN DNS to wrong adapter?

I have openvpn set up on a RHEL-7 Server, and my tun0 address is 10.8.0.1, everything works fine except DNS. When i monitor where DNS is going, it shows it heads to 10.9.0.1. There are no DNS servers ...
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28 views

Why I cannot change my DNS in settings?

In settings but can do that in control panel In the picture, in IP settings, I set IPv4DNS server to 23.21.43.50 Yet below, in properties, the IPv4 DNS server is still 192.168.1.1 Why? That's not ...
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1answer
100 views

(ipconfig /displaydns) - how to display details for specific domain name

When I issue ipconfig /displaydns, I get a ton of output. I want to display the details for a specific domain name like google.com. My objective is something like this as output: I tried ipconfig /...
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1answer
51 views

Tunneling through private OpenVPN on port 53

To bypass restrictions of open HotSpots, I've created my own OpenVPN server in the cloud listening on port 53. I was able to successfully tunnel through it while I was on a tethered connection through ...
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0answers
40 views

DNS leak test results showing DNS servers from different provider

I am using Google DNS 8.8.8.8 and 8.8.4.4. When I ran an extended DNS leak test on dnsleaktest.com I found that most of the reported dns servers were from Level 3 Communications and few of them from ...
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46 views

Kali Linux VM can't connect to a server in the same subdomain

I have been using kali for a while but now I am having trouble connecting to a server on my same subnet (192.168.x.x) when I open Firefox and type http://192.168.1.189:8834/ the response is "cannot ...
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2answers
33 views

Change DHCP server from ISP modem to network router

I have an ISP provided DSL modem/router (Archer) that is currently configured as 192.168.1.1 and acts as the gateway, DHCP server, and the DNS settings are also stored there. I also have my own ASUS ...
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1answer
40 views

What open public DNS we can use to bypass nawala in Indonesia

In Indonesia, we cannot access sites like thepiratebay, reddit, or pornhub. about 1 year ago I found out using norton save connect DNS works. However, most of DNS in https://www.lifewire.com/free-...
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1answer
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Iterative DNS query faster than recursive query due to more entries cached in Iterative DNS query

In an iterative DNS query, requests made by the local DNS server to the root, TLD and authoritative servers can be cached inside the local DNS. Whereas in the recursive query, only the specific ...
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Avoid DNS query for Domain Controller on setting Domain Name

Whenever I set a domain name I see a DNS query for the LDAP Domain Controller in my network traffic. It is of the type _ldap._tcp.DOMAIN_NAME Is there any registry setting, group policy, service ...
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2answers
51 views

Windows 10 uses a different DNS

I configured my routers DHCP to use Level 3 DNS which is 209.244.0.3 and 209.244.0.4 and it is also correctly shown when I check via ipconfig /all: ipconfig dns output: But when I check via ...
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1answer
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When connecting 2 routers to my network I end up with 2 IPV6 addresses. How can I control / stop this?

I'm trying to use a spare router as a wireless access point on my network - I've given it a static address and disabled DHCP, however when I plug this into the network I end up with two ipv6 addresses!...
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1answer
57 views

How to prefer communication in the local subnet using IPv6 ULA instead of IPv6 GUA?

all my devices own IPv4, IPv6 LL, IPv6 ULA and IPv6 GUA adresses like this: 3: wlp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 88:b1:11:...
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0answers
21 views

Names not resolved

Yesterday I connected my computer (Arch) to a new WLAN, browsing without any problem at all. Today, same computer, same WLAN, I can't browse anymore: the names are no longer resolved. Other devices on ...
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1answer
29 views

Initializing DNS in dnsmasq before leases assigned

I am in the process of transferring DHCP/DNS services for my LAN from a system running wheezy to a system running stretch. Both DHCP and DNS are provided by dnsmasq. What I'm seeing, at least with ...
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1answer
61 views

Setting up a srv record with dnsmasq - do I need to use a FQDN?

I'm currently running a linux based/DIY router that provides a few additional services. I don't currently have a domain set up, and I'd like to set up a srv record for certain services hosted on the ...
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2answers
18 views

Old DNS Domain Name / Suffix

I received a PC from work - completely wiped clean and formatted. However, when I look through the network and sharing centre, I can see that the DNS Domain Name / Suffix is still showing as an old ...
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0answers
27 views

One PC on our network cannot access shared folder without first flushing DNS cache?

We have a "server" which is basically just a regular computer we never turn off that has lots of storage space. There is a shared folder on that computer where we put all our shared files. All the ...
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1answer
26 views

.dev domains don't resolve

I noticed today that no .dev domains will resolve in any browser on my MacBook while trying to access web.dev; they all say “__.dev refused to connect.” I did a quick google search for site:.dev, and ...
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PiHole on Synology NAS gives DNS timeout

I recently bought myself a new Synology NAS on which you can install and run Docker images. One of the containers I'd like to run is pihole/pihole (v4). This appears to be working and from what I can ...
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1answer
33 views

Set secondary DNS server as automatic [closed]

I have configured my DNS server for my Windows devices to be Cloudflare (1.1.1.1) and it was working well. However, when connecting to certain internets, my DNS stopped working. It's a huge hassle to ...
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22 views

Wordpress Multisite (bitnami) using SSL and CloudFront on AWS gives error 502

I have recently built a website on AWS by using a bitnami wordpress multisite instance, in order to speed things up, I have decided to use it with CloudFront and for security, with SSL, I have setup ...
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2answers
60 views

How Do I Find My DNS Server IP Address?

My Router is a Huawei E5180s-22 LTE Cube. My system is Windows 10. ipconfig and nslookup both give me "192.168.8.1" as DNS server which is the same as my default gateway. I have taken a look at the ...
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1answer
61 views

WiFi not connecting - possibly due to a Connection-specific DNS Suffix

I'm trying to connect to my work's wifi network, however my new accommodation seems to have set a "Connection-specific DNS Suffix", which I believe is stopping connections to other networks. ...
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OpenVPN, DNS Leaks shows Google as ISP

I'm still very new to OpenVPN but I have managed to get a server up and working out of my home router running DD-WRT. When I went to https://www.dnsleaktest.com/ it shows Google as the ISP when I run ...