All Questions
Tagged with networking server
4,014
questions
0
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answers
32
views
Cannot establish HTTP connection with VPS although ufw is allowing outside traffic
Here is the output of sudo ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip
To Action ...
1
vote
0
answers
38
views
DNS problem for only some devices on our network
I'm running into a DNS issue in our office's network. We had a power outage and when the router rebooted a few of the servers on our network started to have problems connecting to other devices on the ...
- 11
-2
votes
0
answers
38
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Ubuntu 22.04 update disconnects Windows 11 network services
I'm running a Ubuntu 22.04-based file server (Samba to Windows 11 clients). Several weeks ago I ran apt upgrade. My ssh connection dropped part way through the upgrade. From that point I can get a ...
-1
votes
0
answers
148
views
Network/DNS issues on 22.04.4
Im facing strange issue on virtual Ubuntu 22.04.4 server (VM). Few days ago it started to fail during basic network communication. I can ping to IP adresses but when I try ping by name it returns that ...
- 11
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votes
0
answers
123
views
Ubuntu Server 24.04 - Suddenly no Network Interface working
I hope someone can help me becaus I have no idea.
This evening my ubuntu server 24.04 (installed a few weeks ago and running without any problem) stopped the network connection.
I do not get any ip-...
0
votes
0
answers
32
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VOIP Error Can't Connect, No Response from server
So this is for my high school project, and I just learning Ubuntu and want to make a VoIP call from one phone to another, but when connecting it says no response from server.
I tried following the ...
0
votes
1
answer
42
views
netplan config multiple nic dhcp and fixed on different network
I'll try to be as clear as possible...
I have tree computer, my desktop witch have a two nic, one 1gb witch is connected to the router in dhcp to the net (192.168.1.X), one dual 10gb nic connected to ...
- 1
0
votes
1
answer
31
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How to make backend server hosted by Ubuntu Server VM (hosted with Prxmox) accessible from public network?
I have set up a yaml file in folder '/etc/netplan' following the template:
network:
version: 2
ethernets:
eth0:
dhcp4: false
addresses:
- my public ip from 'curl ipinfo.io/...
0
votes
0
answers
11
views
Forwarding https traffic from openvpn to internal server which has internet access
I am trying to achieve the following behaviour
Client <--> openvpn at 1194 <--> internal server at port 8080 <--> internet
I used iptables prerouting route on nat with DPORT 80 and ...
- 1
-2
votes
0
answers
49
views
SSH hanging with Raspberry Pi
I have a RaspberryPi Model 3A+, with the Raspbian OS installed. I am trying to SSH from my laptop, into my Pi over my LAN.
Initially I encountered no issues. I could ssh in fine, execute commands, etc....
- 17
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votes
0
answers
39
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Not able to access protected folder in windows using samba
Im using ubuntu server 24.04 lts and samba for file sharing to windows. The problem is im unable to open or connect to password protected folder but public/not protected folder can be accessed easily.
...
-1
votes
1
answer
133
views
Need to configure user password policy on Ubuntu 22.04 server
We want to configure the following user password policy on our Ubuntu 22.04 server. I have referred to online documentation but have not found a consolidated guide that can help us implement the ...
- 1
-1
votes
0
answers
23
views
Issues with PiVPN Wireguard Port Forwarding on Ubuntu Server
I'm experiencing some difficulties with setting up PiVPN with Wireguard on my Ubuntu server. Here are the details of my setup and the issues I'm facing:
Setup:
Ubuntu Server: Running on my home PC.
...
0
votes
0
answers
14
views
TP Link UE200 fails to initialize during boot
I had ordered a USB to Lan adapter from TP link (link) which used to work perfectly fine around 6-8 months ago in Ubuntu Server 20.04 running Raspberry PI 4B (4GB RAM) and I recently tried to connect ...
- 23
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answers
15
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When we are installing microcloud on ubuntu22.04 it's taking longer than usual while initialising microcloud
while installing microcloud and initialising it it's taking longer than usual while scanning local subnet on the machine so how can we overcome to this issue, is there anything we are missing or ...
0
votes
0
answers
33
views
Static route problem
I define a local IP address in ubuntu 22.04 and route the real IP address so that the switch does not keep arp records.
I add 2 IPs in ubuntu and define the default gw of the local ip address. I can ...
- 1
-2
votes
0
answers
54
views
Understanding DHCPv6 and IPv6 log entries in Ubuntu 24.04
I see the following lines regularly in my servers journal:
Jun 01 22:14:23 serverhostname systemd-networkd[714]: eth0: Ignoring DHCPv6 address 1234:567:890a:bcde:f123:4567:890a:e82/128 (valid for 1h ...
- 1
0
votes
0
answers
11
views
Slow internet Download on my server using wired connection
Recently added a 25G network interface card (NIC), and am connected to my network through fibre but recently I am experiencing extremely slow download speed (5-254 kbps) on my 1Gbit/sec connection.
...
0
votes
2
answers
111
views
Portforwarding Port 22 ( for ssh ) over JioFiber Router not working ( port 22 is closed )
I am using a JioFiber Router ( Firmware version : SRCMTF1_JCOW414_R2.52.1 ) . The host that I want to expose to the internet has Ubuntu Server 24.04.
Private IPs :
Router ...
0
votes
0
answers
28
views
I got a problem like ERR_ADDRESS_UNREACHABLE on my Ubuntu in all browsers
I can't load www.w3schools.com in all of my browsers in Ubuntu 22.04
I already switched to another router, but it didn't help me.
Also, I have already used this commands:
sudo apt update && ...
- 1
0
votes
0
answers
12
views
QNAP: Backing up Ubunbu to an internal NAS, Ubuntu on external IP and NAS on internal IP
I have a QNAP NAS which is connected to my internal network on IP 192.168.87.100 and works well for backing up various devices in my home. I have 2 Ubuntu servers which are on external IP.. One ...
- 1
0
votes
0
answers
53
views
Netplan with source-based routing for multiple NICs and Gateways
I want to configure an Ubuntu VM with multiple NICs and Gateways:
ens18: 192.168.10.0/24
ens19: 192.168.20.0/24
ens20: 192.168.30.0/24
In the best case, the IPs should be provided by my DHCP server.
...
- 1
1
vote
0
answers
28
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CUPS printing server issue (with HP DeskJet 1050A)
I want to make my HP DeskJet 1050A printer accessible on my home network.
I installed CUPS on my Ubuntu server, added a printer, which is connected to a USB port on my server (an old laptop), with a &...
- 11
0
votes
1
answer
41
views
Connecting a domain to a VPS
I'm having trouble connecting a domain to my VPS. Maybe I will describe step by step what I did and someone will be able to give me an answer. I bought a VPS on ovhcloud. I installed Ubuntu on it. ...
0
votes
0
answers
48
views
In Ubuntu 22.04 | Kubernetes Connection Refused
kubectl get pods -o wide | kubectl get nodes
Error from server (Timeout): the server was unable to return a response in the time allotted, but may still be processing the request (get pods)
API Server
...
0
votes
0
answers
84
views
Ubuntu server: Systemd-networkd-wait-online.sercice failed during startup and Invalid login bug
Ubuntu server 24.04 was working correctly for a few hours after install. After I rebooted it, there were two errors:
Systemd-networkd-wait-online.service failed every time on boot. I was also not ...
0
votes
1
answer
77
views
Cant connect to local ubuntu server with ping or ssh, server can ping internet n router
Installed ubuntu server and openssh on old laptop installation went well. Settings good, all firewalls down, ssh active BUT still no machine can ping server n server can ping machines. Tried pinging ...
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answers
107
views
Setting Up Ubuntu Headless Server for Homelab – Need Some Guidance
Hello everyone,
I'm fairly new to Ubuntu and currently setting up a homelab. I've installed Ubuntu Server (headless) on my main machine, and while I can log in through the terminal, I'm feeling a bit ...
1
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0
answers
236
views
Ubuntu 24.04 server with NetworkManager does not configure eth0
I installed 24.04 server on a Raspberry Pi 4. The initial boot recognizes eth0. After I installed NetworkManager, I created a netplan configuration for eth0, wlan0, and wlan1. Upon reboot, eth0 was ...
- 11
0
votes
0
answers
33
views
iptable-save command not showing any output
When i run iptables-save command on Ubuntu Ubuntu 22.04.3 LTS and Ubuntu 20.04.4 LTS it not showing default firewall chain rules when i run this other linux example centos or redhat i am able to see ...
0
votes
0
answers
62
views
Cannot SSH to my server, systetmd-login fails
I cannot SSH on my remote server (Ubuntu 22). When I try, it loads indefinitely. Here is the ouptut of a ssh -v:
Authenticated to x.x.x.x ([x.x.x.x]:22) using "password".
debug1: channel 0: ...
- 131
0
votes
1
answer
75
views
'Connection refused lost connection' error while using scp command
I tried to transfer a file from an HPC system to a remote system using the following command line:
scp /ANKAN/data/abc.pdf [email protected]:/data/ANKAN
But I am getting the following error:
...
0
votes
0
answers
27
views
How can i bridge eth interfaces with no bridge (let me explain)
I have a device that has 3 ETH interfaces.
This way I installed the Ubuntu server on it to use the Pi-Hole application
I want to use my ETH0 to receive the Wan cable from my internet provider moden ...
0
votes
1
answer
121
views
OpenVPN Access Server Stuck on License Agreement
I followed the steps from the OpenVPN Access Server Portal to install OpenVPN Access Server on an Ubuntu Server 22 headless VM. After installing and automatically configuring the service, I went to ...
- 101
0
votes
0
answers
24
views
UFW to restrict access on second NIC
I am running a cloud based Ubuntu 22.04 server with a public and with another non routable IP address (DigitalOcean)
I am trying to limit access to the second IP address for a Tinc VPN which uses port ...
0
votes
0
answers
58
views
How can I set VLAN settings to persist across boots?
I originally asked this question on the Unix & Linux board, but I guess it's more appropriate to ask it here.
I have an Ubuntu Server 23.10 which is located on VLAN 2 (IP: 192.168.2.100) and I ...
- 111
0
votes
1
answer
132
views
Netplan doesn't set static IP after upgrade 20.04 -> 22.04
I'm trying to set the static IP of a network interface on a server that has just upgraded its distro from 20.04 to 22.04. Here is the netplan /etc/netplan/80_netplan_netcfg.yaml.
network:
version: 2
...
0
votes
0
answers
28
views
1Gbe Interface stops working when MTU set to 9100 on 100G interface
I have a server with 2x1gbe ports LOM and a single port 100G nic.
Our 1gbe network is different than our 100G network and both have access to the internet. I would like to be able to use both ...
0
votes
1
answer
534
views
How to install a certificate on XRDP installed on Ubuntu 22.04
I am setting up RDP connection in Ubuntu and trying to access it from another machine Windows,via Microsoft's Remote Desktop Connection. The setup is fine and works properly with username and password....
- 1
1
vote
1
answer
262
views
Linux devices can ping ip address but not hostname in local network
I have a network that contains two Linux devices, a router, and a Windows machine. The Linux machines can ping each other using IP addresses and are able to resolve domain names like www.google.com, ...
0
votes
0
answers
25
views
OpenVpn configuration problem - how to access to vpn client subnet on vpn server
I have a problem with configuring OpenVpn connection. I want to configure a virtual machine to have something like hub of other vpn's. On virtual machine (lubuntu) I have a few OpenVpn clients and it ...
- 1
1
vote
2
answers
308
views
Can I use wifi and ethernet at the same time?
I am planning to build an AirPlay receiver with Ubuntu.
The network configuration in my house is a bit complicated. My home network is in a "Double NAT" state, so other smartphones inside ...
- 11
0
votes
1
answer
70
views
Apache2 gives 403 when serving websites outside /var/www/
Why does Apache2 give 403 when serving websites outside /var/www/?
I have the following configurations on my local machine for development and they worked perfectly fine before in my old machine.
/etc/...
- 2,648
1
vote
1
answer
89
views
How to setup ubuntu host to provide internet for guests on private subnet?
As a developer I am trying to setup vm guests on ubuntu 22 host (virtualbox) to be able to reach the Internet. The twist is I am not running an external router on the same private subnet, so I suppose ...
- 21
1
vote
0
answers
62
views
Unable to mount Android phone via SSH on Ubuntu 20.04
Following all of the steps outlined in this answer, on the thread titled How to mount Android external storage over WiFi instead of USB, I still can't figure out how to wirelessly mount my Android ...
- 459
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votes
0
answers
78
views
Changing netplan Subnet mask on Ubuntu Server makes server unreachable
I am trying to widen the subnet on an Ubuntu server (also runs DHCP) so I can put my IoT devices on a different subnet - I currently use 192.168.1.x - I want to put the devices on 192.168.2.x and 192....
- 101
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votes
0
answers
34
views
Static IP on Ubuntu Server [duplicate]
I'm trying to setup a static IP on Ubuntu Server, but I’m not able to set 192.168.16.244 as you can see.
Do you have any advice?
- 1
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votes
0
answers
37
views
Ubuntu SSH Server Not respecting the Network Proxy
I've a ubuntu with a SSH server configured, my ubuntu has a vpn and Network Proxy settings set to manual, but when I connect with SSH this settings seem to not apply to it.
For example if I do "...
0
votes
0
answers
21
views
trouble with DNS ports config
I'm just starting out setting up my own server (VPS) so still on the steep learning curve.
I'm running it on Ubuntu 22.04 with Cloudpanel installed to manage the sites. Cloudpanel loads successfully ...
0
votes
0
answers
20
views
nginx traffic redirect based on subdomain
I am currently attempting to setup my VPS to host multiple different docker containers.
My domain name is hosted on Cloudflare (which has a limited amount of available ports).
After doing research, to ...
