All Questions
162
questions
-1
votes
0
answers
38
views
Hostnames are not resolved when i turn on Strongswan VPN ubuntu 22.04
I have created a connection on my VPS:
nmcli connection add type vpn vpn-type strongswan con-name "vpn" ifname "*" vpn.data "address=<ADDRESS>, certificate-ignore=yes, ...
0
votes
0
answers
42
views
NetworkManager rewrites name servers in config file
I have a wifi network connection that has a config file
/etc/NetworkManager/system-connections/MyNetwork.nmconnection
Name resolving did not work, so I added my provider's name servers.
But upon ...
- 125
0
votes
0
answers
36
views
local DNS server for dns caching OpenVPN clients
i have two servers. One in the netherlands and one on australia.
They are connected to each other over vpn.
When a client connects to the australian server there is the netherlands dns server provided ...
- 1
0
votes
1
answer
196
views
Can't connect to certain website when connect to VPN
please edit my text:
Here is my current operating system:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.6 LTS
Release: 20.04
Codename: focal
...
- 101
0
votes
0
answers
92
views
DNS with VPN problem
I've been facing issues accessing company websites with the VPN and company DNS configurations set up. Access can be gained by manually adding entries to the /etc/hosts file but im looking for better ...
- 1
0
votes
0
answers
383
views
Adapt systemd-resolve command to resolvectl
I upgraded my ubuntu to 22.04 and a script that routes the traffic of my work vpn is not working properly since it uses a systemd-resolve command.
How I use the script: I manually execute a script (...
- 1
0
votes
0
answers
88
views
Ubuntu hosting VPN for personal VPN network
This is probably a simple solution and I am missing something but I have a home network that does not have a static IP and I have a domain controller and a samba share on that DC, I want to be able to ...
1
vote
1
answer
858
views
Ubuntu 23.04 resets to wrong dns server on startup
I've had this problem since updating to 23.04. When Ubuntu reboots it reboots to the DNS server of Proton VPN. I tried this solution: Internet connection only work when i use vpn! ubuntu 22.10 which ...
4
votes
4
answers
30k
views
How can I force Ubuntu 22.04 SERVER to use ONLY the DNS servers listed in /etc/systemd/resolved.conf (NOT my router's DNS) AND use DNS-over-TLS?
I have added these lines to /etc/systemd/resolved.conf in a Ubuntu 22.04 SERVER install with NO DESKTOP - I emphasize that because I can't use the normal desktop method of setting network options in ...
- 287
0
votes
2
answers
867
views
Internet connection only work when i use vpn! ubuntu 22.10
Hey there i was i am using Ubuntu 22.10 and its my first time using it. my WiFi seems to be workingfine and i wanted to install proton vpn and after using it for a while i disconnected and it seems to ...
- 11
0
votes
0
answers
64
views
How to prevent all domain names except one domain?
I have a server that my users connect to for internet browsing. I want my users can only access a website like domain.com but nothing else.
This website is behind Cloudflare CDN. So I can't block the ...
- 523
0
votes
2
answers
785
views
Generate iptables rules while connecting to VPN Server
I'm building a virtual Ubuntu Server(LXC on Proxmox) that shall act as router and tunnel some devices(e.g. AppleTV) of my local network through a VPN (expressVPN).
Connecting and routing to different ...
- 1
0
votes
2
answers
2k
views
Ubuntu 22.04.1 LTS: DNS address could not be found DNS_PROBE_POSSIBLE
so I am new to ubuntu and while trying to connect to any website or even do a simple search I get this error of DNS address could not be found DNS_PROBE_POSSIBLE. I was using proton vpn before but ...
0
votes
1
answer
218
views
How can I script changing DNS settings for my WiFi connection on startup?
My VPN software (Forticlient) breaks DNS and I get that question mark over the WiFi symbol and no internet. I can fix it by deleting all the DNS IPs, setting DNS to auto and restarting networking. I ...
- 131
0
votes
1
answer
128
views
School Wifi Speed is good but it takes extremely long to make a connection to webpage
When I connect to on-campus WiFi, it take about 30 seconds to load a page; however, there is some odd behaviour. For example, It take 30 seconds to load Facebook, but once I have Facebook loaded, ...
5
votes
1
answer
12k
views
Ubuntu 22.04 - VPN's DNS server not used for resolving addresses
I'm using Ubuntu 22.04 and I've been trying to make VPN connection work next to my normal network. I'd like to route traffic through VPN only for its network (selected "Use this connection only ...
- 141
1
vote
1
answer
234
views
Why is Ubuntu 20.04.3 internet access not working?
My Ubuntu OS is connected to the my working internet network, but any internet-reliant services have not been functioning properly. This includes downloading anything (including any packages from the ...
- 21
1
vote
0
answers
439
views
Ubuntu 21.10 VPN disconnection does not revert back to original DNS server in /etc/resolv.conf
When I disconnect from my company's VPN in Ubuntu 21.10 (using Gnome GUI for VPN connect/disconnect), I do not have previous DNS server entries in /etc/resolv.conf. Can anybody help sorting this issue ...
- 421
4
votes
2
answers
34k
views
How to fix WSL domain resolution
so I was having issues with domain resolution with WSL whenever I use the VPN. I would get this:
ping: google.com: Temporary failure in name resolution
I tried following instructions from these ...
- 143
0
votes
0
answers
1k
views
OpenVPN and DNS error
I'm using Ubuntu18.04.6, OpenVPN 2.5.2.
I connect using .ovpn file:
sudo openvpn --config name.ovpn
I am getting errors:
Options error: Unrecognized option or missing or extra
parameter(s) in [...
- 101
0
votes
0
answers
373
views
How to fix No ethernet and no WiFi working on Ubuntu 20.04
I was performing a DNS Lookup using a custom .c file i've written (while on a VPN) and suddenly I lost internet connection and I can't even access the WiFi settings.
I've also tried connecting to ...
- 121
1
vote
1
answer
3k
views
Ubuntu 20.04 Network Manager Wireguard DNS Leak
I added my Peer-Config from Wireguard to Network Manager manually:
[Interface]
Address = 10.13.13.5
PrivateKey = key
ListenPort = 51820
DNS = 10.13.13.1, lan
[Peer]
PublicKey = key
Endpoint = ...
- 11
0
votes
0
answers
190
views
Required to call `systemd-resolve` each time I connect to VPN
Whenever I connect to a VPN using OpenVPN I have to run the following command or I cannot access some websites:
sudo systemd-resolve --set-dns=1.1.1.1 --interface=wlp111s0
Is there a way to ...
- 101
0
votes
0
answers
173
views
DNS Error after the crash of VPN and the file get's over written
I was using a proton VPN for some purpose of testing and Due to some reason I needed to shut down my laptop as it was stuck(Hang) and as I restarted My laptop I opened a browser to resume my work and ...
0
votes
0
answers
87
views
help with dns name conflict vpn and docker
I need to access an url via VPN, (estrelaoriente.com)
but seems it is conflicting with an docker route (docker.amazee.io):
~$ ping estrelaoriente.com
PING estrelaoriente.com.docker.amazee.io (127.0.0....
4
votes
1
answer
3k
views
Problem with DNS resolution when NOT connected to VPN Ubuntu 20.04
When I try to access a website it doesn't work anymore and just tells me "DNS_PROBE_POSSIBLE" unless I am connected to a VPN (Proton VPN) then the internet works fine.
After some digging ...
- 151
1
vote
0
answers
369
views
/etc/resolv.conf not getting properly regenerated after VPN disconnect
I'm running Ubuntu 20.04.3 LTS.
After booting, and before connecting to my VPN, my /etc/resolv.conf looks like this:
# This file is managed by man:systemd-resolved(8). Do not edit.
#
# This is a ...
- 111
1
vote
0
answers
320
views
Problem with reaching websites on browser after establishing vpn by openconnect
I used openconnect in terminal for connecting to server. The connection established. I can ping any websites. It looks good for everything. But in Chrome and Firefox I couldn't access to websites. All ...
- 33
0
votes
0
answers
1k
views
Cannot reach DNS server when connected to VPN
When I connect to my work network over VPN, I gain access to the work network and can SSH to the servers, but lose access to the internet on my local machine.
I believe this to be an issue in finding ...
- 231
0
votes
1
answer
1k
views
how to clear dns cache on vpn connection?
After connecting to my customer's VPN, I need to issue this command:
service nscd reload
Or wait for some time before I can access internal services.
How can I make this happen automatically?
- 133
0
votes
1
answer
460
views
New openvpn server clients can ping layer 2 but not layer 3 (DNS)
I am trying to configure a new openvpn server and my clients can connect to the server, ping 4.2.2.2, but fails at layer 3 (DNS).
error:
ping google.com
temporary failure in name resolution
server ...
- 160
5
votes
3
answers
10k
views
Ubuntu keeps changing my DNS to 127.0.0.53
I installed expressvpn with Chrome extension. And even when I disable the VPN my system keeps changing my DNS to 127.0.0.53 and I have to manually change it back to 192.168.1.1 for internet to work. ...
- 181
0
votes
0
answers
2k
views
How to fix DNS leak OpenVPN on Ubuntu 20.04?
Okay, so basically I am using openvpn to connect on one of the NordVPN's servers.
But long story short, I haven't even noticed all until this night, my DNS is leaking somehow.
My sys. info:
str1ng@...
- 155
2
votes
1
answer
2k
views
Proxy failing because system resolves it using local DNS instead of VPN (Ubuntu 20.04)
I am using an VPN over openconnect through NetworkManager. I also have a proxy server whose configuration is reachable via VPN (at http://wpad/wpad.dat). Sporadically, when I connect to VPN it fails ...
- 21
1
vote
0
answers
170
views
How can I tell what app, script, or service is responsible for changing resolv.conf?
I am aware that DNS and other name resolution is controlled most proximately by /etc/resolv.conf, and that resolvconf / resolvectl / systemd-resolve is most proximately responsible for the contents of ...
- 111
1
vote
1
answer
100
views
Wi-Fi router gateway IP adding as nameserver IP in resolv.conf only works for Pulse secure VPN connectivity
I am using Ubuntu 18.04.5 LTS and trying to connect Pulse secure VPN with default nameserver entries in below resolv.conf file, but unable to connect, it gets connected for second or 2 seconds and ...
- 11
1
vote
0
answers
904
views
networkmanager and dns resolution
I would like to understand how DNS resolution works on my machine.
I am using Ubuntu 20.04.2 LTS (Focal Fossa). My network connection is set up via NetworkManager:
$ cat /etc/NetworkManager/...
- 71
0
votes
0
answers
77
views
Abnormal DNS output
Why does dnsleaktest.com find previous DNS address/multiple new DNS addresses?
Now I decided to try a new one and to my surprise the dnsleaktest.com gives me three diferent outputs as I check my DNS - ...
user1194432
1
vote
1
answer
969
views
OpenConnect can ping but can't resolve company websites
Using network-manager-openconnect & network-manager-openconnect-gnome I have set-up a Palo-Alto Networks GlobalProtect VPN to connect to my company network.
This works fine and I can access all ...
- 61
3
votes
0
answers
2k
views
How to get systemd-resolved to use /etc/hosts when openFortiVPN is active
Ubuntu 18.04. I have a host entry in /etc/hosts and this is being resolved correctly when I use nslookup. My /etc/nsswitch.conf looks like
# /etc/nsswitch.conf
#
# Example configuration of GNU Name ...
4
votes
1
answer
15k
views
Clear dnsmasq cache without restarting the service
I have cache enabled in my dnsmasq, because it is fast.
In some situations (for example, with VPN off), dnsmasq caches wrong results. I want a quick way to clean the cache (when I connect to the VPN ...
- 848
0
votes
2
answers
473
views
How do I make the VPN use different DNS?
I want to connect to a other computer (computers that I don't manage at my university) via VPN. I wanna use the default Ubuntu way of doing that (no openVPN). After getting succesfully connected to ...
- 101
0
votes
0
answers
243
views
Connectivity issues after VPN disconnect: Ping but no DNS
PROBLEM
I often use NordVPN on my linux machine (20.04.1), which uses the systemd-resolve network manager. After I disconnect from the VPN, I often have connectivity issues:
I CAN ping 8.8.8.8
I ...
- 143
0
votes
1
answer
1k
views
Can not resolve domains in wireguard network on xubuntu 20.04
On my Xubuntu 20.04 desktop computer when connected to a wireguard network resolving domain names fails. It works just fine for other clients (Android phone and a Debian10 SBC). The VPN server ...
- 1
0
votes
1
answer
1k
views
Per-domain DNS servers
My laptop is running Ubuntu 20.10. It's connected to a network with a fairly normal internet connection - the router provides DHCP, DNS etc.
But another host on the network (not the router) provides ...
- 1,156
1
vote
1
answer
3k
views
Failed to configure NetworkManager to use dnsmasq
I am using openconnect to connect to vpn and vpn-slice for vpn splitting. openconnect modifies /etc/resolv.conf after start, but that doesn't help with vpn domain names resolving.
To work around that, ...
- 111
1
vote
0
answers
636
views
How to permamently add a nameserver to the /etc/resolv.conf?
I daily need to connect to a VPN from my Ubuntu Desktop 20.04, and each time I do that I need to edit the resolv.conf file, since it is constantly updated by NetworkManager. Its content is reset to:
# ...
- 376
1
vote
1
answer
2k
views
DNS resolve issues when connected to fritzbox VPN through Ubuntu (20.04.1) vpnc (0.5.3r550-3.1)
i have a device in my private network, let's call it "webserver". when i am directly connected to my private network at home then i can reach that server by using its host name, like http://...
0
votes
1
answer
1k
views
DNS nameserver gets changed after disconnecting from VPN on Ubuntu 16.04
I was using Google DNS 8.8.8.8 in Network Manager applet for some time and everything seemed to work fine. A couple of days ago I switched from Manual settings to Automatic and removed Google DNS for ...
- 529
1
vote
1
answer
9k
views
Ubuntu 20.04 DNS not work after connect to VPN
I have Ubuntu 20.04.1 LTS. I added VPN config using this instruction.
VPN is correctly added. When I connect to this VPN I can open only page with address IP.
For example I can ping address 8.8.8.8 ...
- 161