All Questions
Tagged with networking ssh
1,104
questions
-2
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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 ...
0
votes
0
answers
23
views
SHA256SUMS and SHA256.gpg problems
Hi: ¿where can I get the SHA256SUMS and SHA256.gpg for UBUNTU 24.04-ISO? I can not find in ubuntu.com. It is so hard to find.
Thanks
-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
44
views
noble 24.04 ssh after DHCP reservation
When I installed 24.04 on my two machines (let's call them foo1 and foo2), Ubuntu settings has an ssh feature in settings|system|secure shell which would allow me to simply type ssh foo2 from foo1 to ...
- 664
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
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 ...
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
30
views
Openvpn service running, not connecting to tunnel after changing iptables
I'm trying to make a kill switch for my pi to only allow traffic through the VPN. I made the changes below to iptables and disabled IPv6 in sysctl.conf. This is not my area of expertise so I'm hoping ...
- 1
0
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
82
views
I'm having trouble connecting to server with Remote Desktop Connection
A screenshot explains it better. I can't connect because of this. My Remote Desktop Connection fails because the remote computer can't be authenticated due to problems with its security certificate. ...
- 1
1
vote
0
answers
41
views
Unable connect via port knocking
I am trying to set up port knocking on my server to enhance security. I've configured my firewall rules to use port knocking, where I have to connect to specific ports in a specific sequence before ...
- 11
0
votes
0
answers
59
views
After ssh to remote server, it freezes, if I type commands like "top", "htop", "screen -r screenname", "pipenv shell"
I try to connect to a remote server, to train a machine learning model. With my ubuntu laptop,
I can ssh to the server
I can not scp any file. It starts but freezes at 0 percent and 0kbit/sec speed
...
- 101
0
votes
0
answers
23
views
Ubuntu 20 desktop has my external IP
I have a small factor PC connecting to LAN1 port of a router that acts as a wifi bridge to other parts of my network. The traffic eventually leaves the house from a Bell Canada router. Yesterday I ...
0
votes
0
answers
63
views
pam_radius_auth: Failed to open RADIUS IPv6 socket
I am using Ubuntu22.04.3 LTS. We've encountered the following error after disabling IPv6. Previously, it was working fine when IPv6 was enabled. However, in our environment, IPv6 is not in use:
"...
0
votes
1
answer
135
views
I was installing / enableing fips 140 , rebooted as instructed now my wifi wont let me log rejecting the correct pw. Running Ubuntu Studio 20.13on
I was attempting to make a compliant
Laptop and after enabling fips 140. I can no longer log in to my Wi-Fi networks with what were the proper passwords, it asks for password or security encryption ...
- 11
0
votes
1
answer
70
views
Network settings seems to be completely broken, no logic to be seen
I have been a random problem with my server for a while, every now and then after a reboot the network suddenly completely stops working. Normally, after a few changes in the network files I am ...
- 101
1
vote
1
answer
439
views
unmasking ListenAddress :: in sshd_config
what will happen if unmasking ListenAddress :: in sshd_config and restarting sshd service. Will I block myself out forever? Seems like I have done it.
- 11
0
votes
1
answer
397
views
No route to host
I'm creating an ubuntu server. I'm totally new.
The first redflag is when the pc is turning on, before everything is loaded, it fails in "a start job is running for wait for network to be ...
- 11
0
votes
2
answers
227
views
How do I tell if a given IP resolves to VPN network or somewhere locally?
I don't know how to title my question, but here's the thing.
I'm on Ubuntu 22.04.3 LTS. I've got a GlobalProtect VPN configuration. I followed this article to be able to connect from Ubuntu's Network ...
- 141
1
vote
0
answers
175
views
SSH connection refused and no ping reply from ubuntu server using other networks
I recently setup Ubuntu Server 22.04 to my old PC and got it running fine, until I tried to SSH it from another location and connection refused. I then tried to ping it which didn't work either. I ...
- 11
0
votes
2
answers
441
views
Openssh - Allow root access sftp and ssh in the same server [duplicate]
I want to configure sftp on my server to be accessed by root user.
I changed my configuration of /etc/ssh/sshd_config to:
PermitRootLogin yes
AuthorizedKeysFile .ssh/authorized_keys
...
- 1
0
votes
2
answers
151
views
How to allow user to SSH-connect to VM deployed on host without access to host itself
I have an UbuntuOS host (let say, 150.15.15.15) and another UbuntuOS virtual machine (192.168.7.2) deployed on that host. I want to configure SSH-tunnel on host so that remote user can connect to VM ...
- 123
1
vote
0
answers
96
views
wifi not working when connect ethernet port ubuntu server, operate internet(wifi) and LAN (eth) at same time
I have searched for the same issue and there were some similar but none of the solutions worked for me.
I have a PC running ubuntu server 22.04.3 it has a wifi adapter set at
192.168.1.111
I can ...
- 11
0
votes
2
answers
231
views
Ubuntu Server stuck searching 2 minutes on disconnected network adapter
Edit3: yeah I don’t have an interface folder in my network either weird
Edit2: potential fix seems to be amending
The Ethernet in /etc/network/interfaces from auto -name- to allow-hotplug
I have yet ...
0
votes
0
answers
119
views
SSH Connection Stop After Some Time But CloudFlare Tunnel Works
I have a machine in my home which I use as a test machine and host some of my services, and to access those services from outside of my home I installed a CloudFlare tunnel as well.
Now after some ...
- 21
0
votes
0
answers
192
views
ufw rule to allow address on the same subnet?
I have a server running Linux hosting a website. It uses ufw as a firewall. I have ports 80 and 443 open to external traffic. This all works.
Now what I want to do is allow any traffic from my laptop ...
- 109
0
votes
0
answers
84
views
Preparation for Ubuntu 22.04 LTS home server
I just setup Ubuntu 22.04 LTS Server Edition on my home lab PC. My Internet ISP provide me with dynamic public ip address, and I use freedns.afraid.org to update record for my public IP address.
I set ...
0
votes
0
answers
56
views
ubuntu server becomes unreachable through ssh over time
I'm encountering an issue with my Ubuntu server where, after a reboot and some time has passed, I am unable to connect through SSH or ping the host. I could trigger github actions that could run on ...
- 1
0
votes
0
answers
338
views
app for running VPN configurations (NapsternetV, HTTP Injector SSH...)
I need a VPN connection to access filtered content on the internet because there are so many filtered content in my country.
I use nebstrent V and HTTP injector on Android.
Is there an app or any ...
- 1
0
votes
1
answer
550
views
send_pubkey_test: no mutual signature algorithm
Here is the client log output after a ssh -vvv user@machine (I think this problem is related with the deprecation of sha-1). I have already tried to create a new key/par for ed25519, but it doesn't ...
- 245
0
votes
2
answers
469
views
Cannot access any service running on ubuntu server including SSH
Problem: I'm unable to access any service running on by Ubuntu 22.04, including SSH. This server has been running for months without any issues. It currently hosts a frontend as well as 3 different ...
0
votes
1
answer
104
views
Can't SSH PC running 2 network cards from second network
I've got an Ubuntu PC (Machine A) with 2 network cards connected to 2 different networks.
Machine A can be ssh'd from a different machine that is on its first network (eno1), but can't be ssh'd from a ...
- 11
-1
votes
1
answer
293
views
SSH into my own machine on my local network (no access to peripherals and remote access is not turned on)
I'm wondering if I can access my Windows 10 machine from another machine, both on the same network. I know the IP and my user/the pass for it but otherwise do not have access to the computer. I want ...
0
votes
0
answers
33
views
Connected via Ethernet LAN Network with Static IP address and WiFi, unable to connect to the internet via WiFi
I am running Ubuntu 20.04 and connected to a local device with IP 192.168.50.64, so I set the static IP of the computer to 192.168.50.10 to access the secondary device's locally hosted website. This ...
- 1
0
votes
0
answers
161
views
I can't login ubuntu 22.04 GUI with my domain user without network connection
Now I have two issues:In my ubuntu
When my computer is not in the network, I can't login GUI with my domain user ID.
I am uanble to sudo su with domain account when I am in Network with gui Login.
- 1
4
votes
1
answer
955
views
I can't connect to Ubuntu server from local network, but can from outside
This is a weird one that has been driving me crazy for a while. I just can't work it out.
I'm running Ubuntu 22.04 (with all latest patches) on a Dell PowerEdge-r710 server. It's hosting a variety of ...
- 143
1
vote
0
answers
435
views
How can I run a windows VM on an machine running Ubuntu that I have remote access to?
The situation is that I have remote access to a machine running Ubuntu 20.04.5. This is brand new with nothing setup.
I want to setup a windows VM on this remote machine, and ideally have some client ...
- 11
0
votes
0
answers
57
views
Prioritize network traffic for ssh
How can I prioritize network traffic for my ssh connection to work stable.
I ran some service on Ubuntu, and now I cannot do anything through ssh. Even ping does not respond.
- 111
1
vote
1
answer
513
views
SSH into Virtual Machine thorugh another PC in the same network, Creating Bridge Network
I created a Virtual Machine using Virtual Machine Manager. I am using a Ubuntu OS(.iso) for the VM. After creating a VM it automatically assigns a IP to the VM. I can only SSH from the host Machine to ...
- 21
-1
votes
1
answer
74
views
Why Ubuntu sets system's hostname for my public IP?
In various network utilities, Ubuntu 18.04 displays my public IP address with the system hostname. Let's imagine that 12.34.56.78 is my public IP and 9.8.7.6 is some client's IP. For example, if I ...
- 127
0
votes
0
answers
2k
views
SSH Connection Timed Out Ubuntu 20.04
I've looked through a million threads on this topic but nothing has worked. I'm trying to ssh into my linux through port 22. Connection is refused.
UFW is inactive and firewall-cmd is not downloaded
...
- 1
2
votes
0
answers
737
views
How to use local-link ipv6 for ssh?
I am able to remotely access my Ubuntu 22.04 PC from my windows' notebook at my local network using ssh
ssh <username>@<public ipv6 address> -p <port>
Or ping it without no problem.
...
- 207
0
votes
0
answers
116
views
OpenVPN: I cant ping from remote to local, but local to remote works
I am trying to ping from remote server to my local, but it does not work properly.
I am accessing an Ubuntu 22.04 Server through SSH(10.30.X.X), it works.
When i try to ping from remote 10.30.X.X to ...
0
votes
0
answers
87
views
Fail2ban with lots of IPs in log
I have a VPS with Ubuntu 20.04 to run a Counterstrike source server and I'm experiencing a weird kind of attack on ssh (brute force?) I setup fail2ban and on the first day of server online a lot of ...
0
votes
1
answer
345
views
SSH to Ubuntu virtual machine under Azure, permission denied (publickey)
We do have a virtual Ubuntu machine under Azure. The IP address is known (for this message it will be named "thatIP").
Setup to log in via a certificate does work.
We are now trying to set ...
- 184
0
votes
0
answers
390
views
how to set a static ip address for a server
I have file server that uses Samba. I connect to it through VPN and SSH. Sometimes, the server's IP address changes, and I can't access my files or SSH into it. I want to set a fixed IP address, but I ...
- 1
0
votes
0
answers
72
views
Can't connect to Linode using ssh
Trying to connect from Ubuntu 22.04 through ssh to linode. But it's giving:
ssh: connect to host xx.xx.xx.xxx port 22: No route to host
I tried ping xx.xx.xx.xxx and it worked fine. Output of telnet ...
- 119