All Questions
125
questions
0
votes
0
answers
85
views
LAN Networking - Local DNS Name not Working in Windows Browser
I have a home server (running Ubuntu, which I named "lenovo") that runs a couple of HTTP servers. These HTTP servers are accessible to other clients on my home LAN. They are always ...
- 1,804
-1
votes
1
answer
189
views
Set wsl2 to use host nameserver
I'm using wsl2 on Windows 11, and I recently encountered a problem where when I change networks, the wsl2 dns (nameserver at resolve.conf) address doesn't update, to match, and there for cannot lookup ...
0
votes
0
answers
56
views
bypassing slow ISP-specified DNS servers with Ununtu 22.04.1 LTS
I have FTTC NBN (it's an Assie thing) feeding a router (I've tried TP-Link and Sagemcom) over PPPoE. I set the desired DNS IP's in the router but when I activate the PPPoE connection, the router ...
0
votes
0
answers
142
views
NGINX responds to pings, rejects requests, times out on DNS - potential hairpining
Running Ubuntu Server v23 with NGINX and a "static" IP address (via noip).
From my Server I ping the public IP and see this:
Via Web Server: IP 192.168.1.43
root@websrv:/etc/nginx/conf.d# ...
- 101
0
votes
1
answer
80
views
VPN with Ubuntu using local DC as DNS server with Homelab?
I have a homelab that has various servers, and inside the home network there is a domain control that also acts as a DNS server. This home network does not have a static IP. I have a ubuntu VM in the ...
0
votes
0
answers
102
views
Getting strange timeouts when trying to connect to registry.gitlab while at ci\cd pipline. How can I debug and what could cause this?
About a week ago my gitlab pipeline started failing because of strange timeout errors while connecting to registry.gitlab:
Error response from daemon: Get "https://registry.gitlab.com/v2/": ...
0
votes
1
answer
146
views
React/Express on Nginx/Ubuntu- React app works, Express gives 521 "bad gateway"
I'm attempting to run both an Express backend and React frontend from one Ubuntu server through Nginx, with Cloudflare handling SSL and DNS. My goal is to have the backend on api.nonsensefreerecipes....
1
vote
0
answers
430
views
No internet: firejail ubuntu 20.04 --net=eno1 --dns=QQQ.RRR.SSS.TTT
This is the same case of unanswered question DNS not working in firejail
ALL SENSITIVE INFORMATION WAS MODIFIED TO A SET OF THREE OR TWO LETTERS (AAA, etc. or XX)
The case is:
I have an ethernet ...
- 11
0
votes
0
answers
662
views
How do I properly point http(s) traffic to a squid proxy via bind9?
I've set up a Ubuntu server running bind and squid. In my home network I've set up a raspi running pi-hole and dnsmasq. Dnsmasq is set up so that it overrides certain dns requests with the IP of the ...
- 1
0
votes
1
answer
593
views
iptables ESTABLISHED,RELATED in combination with DNS rules
I'm reading Chapter 3 in "Cybersecurity for Small Networks" (Seth Enoka) and have added the following iptables rules in an Ubuntu 22.04.1 virtual machine:
# Generated by iptables-save v1.8.7 ...
0
votes
1
answer
602
views
AWS ec2 as dns server is not working
I have beeing trying to set a DNS nameserver on Amazon Ubuntu resolv.conf .
To do that, I have followed the steps :
sudo nano /etc/resolvconf/resolv.conf.d/head
Added following entries:
nameserver 8....
- 183
0
votes
0
answers
935
views
Avahi doesn't resolve reliably
I have two computers, one running Ubuntu Desktop 20.04, the other running Ubuntu Server 20.04, lets call them desktop and server. I have installed avahi-daemon on them both. Desktop is a development ...
- 101
4
votes
1
answer
25k
views
/etc/resolv.conf is missing, what's the expected way for it to be populated?
I've been using Ubuntu Server 21.10 for about 6 months without incident. Recently I've had some services (both in containers, and the Docker daemon itself) suddenly experience issues due to DNS ...
- 309
1
vote
1
answer
1k
views
dig and nslookup results connection timeout for my subdomain.cloudns.nz using 8.8.8.8 as dns but it works for anything else or from somewhere else
when i run dig @8.8.8.8 mysub.cloudns.nz i get this :
; <<>> DiG 9.16.1-Ubuntu <<>> @8.8.8.8 mysub.cloudns.nz
; (1 server found)
;; global options: +cmd
;; connection timed ...
- 136
3
votes
0
answers
7k
views
Remove redundant DNS servers in Ubuntu 22.04
Ubuntu 22.04
Original:
root@ubuntu:~# resolvectl
Global
Protocols: -LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
resolv.conf mode: stub
Link 2 (ens5)
Current Scopes: DNS
...
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