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Questions tagged [connectivity]

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Total disconection when using TorVPN in Csi Linux

I am using and giving a try in Csi Linux distro. She has TorVPN that, at least in theory, routes all the traffic through Tor Network. After service tor status commando I see the service is up. I tried ...
Hack3rX's user avatar
0 votes
0 answers
48 views

Remote Desktop Connection closes almost immediately when trying to connect to Debian via WSL

Hello everyone, I'm facing intermittent issues with accessing my Linux server from a Windows 10 PC using XRDP. Here are the details: Linux Distribution: Debian 12 XRDP Version: 0.9.21 Desktop ...
RedoX's user avatar
  • 1
0 votes
1 answer
135 views

dhcpcd times out at "waiting for carrier"

When I try to connect to wifi, dhcpcd gets stuck, # dhcpcd wlxf42853190543 dhcpcd-10.0.6 starting DUID 00:01:00:01:2d:1b:d8:8a:f4:e8:53:d9:78:b1 wlxf42853190543: waiting for carrier and times out. I ...
Dan Jacobson's user avatar
0 votes
0 answers
109 views

mutt hangs when connecting to SMTP server on an unreliable connection

When sending email with mutt and connecting to an external SMTP server, on an unreliable connection (e.g., bad Wifi), it often happens that mutt remains stuck at the "Connecting to..." stage ...
a3nm's user avatar
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0 answers
106 views

Intel AX210 with single antenna saw 5Ghz and then it didn't?

I've been upgrading an a bit older HP Pavillion laptop with SSD, more RAM and since I had one lying around, an Intel AX210 m2 wifi adapter. The stock adapter was a single-channel Broadcom ...
RJVB's user avatar
  • 254
0 votes
0 answers
139 views

Gnome shows ethernet connected when cable is unplugged

I'm trying to connect to the internet on my Debian 12 laptop using my phone connection through an USB-C cable. When the cable is connected and the connection sharing is activated on the phone, the ...
runningwild's user avatar
0 votes
0 answers
37 views

Connecting 2 vm having ubuntu on same device

I have a window laptop where i have installed 2 ubuntu VM's on VMWARE workstation 17 player. I have downloaded apache on one Virtual machine and DNS on the other. I have a website on ubuntu having ...
Haider's user avatar
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1 answer
2k views

Ssh access to a server with internet access but no public IP address

I have an ssh server running Kubuntu 22.04 behind a router providing internet connection, but without a public IP (this is the policy of the ISP). So, the server can access the internet, but any port ...
BowPark's user avatar
  • 4,955
0 votes
0 answers
103 views

How to update Ubuntu without network connection (using only connected Windows machine)

My ubuntu system no longer connects to the internet, I suspect due to lack of updates since I haven't used it for almost two years. However, I now need to use it with internet again, but it fails to ...
Elisabeth's user avatar
0 votes
1 answer
5k views

Ubuntu VM with bridged adapter not connecting to internet

I am trying to deploy a web app in a VM, but if I use a NAT adapter, that VM is assigned a private IP. I want to use the bridge adapter to give the VM a real IP in my DHCP network. Both host OS and ...
Francisco's user avatar
2 votes
2 answers
4k views

Connection to github.com closed by remote host

Problem is exactly as reported in HPC ssh "connection closed by remote host" Connection to host closed by remote host. Exit status -1 But it is not the "ssh_exchange_identification:&...
xpt's user avatar
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0 answers
194 views

Can SSH into headless setup, but no internet connection

I freshly set up a headless Raspberry Pi on Raspbian. It is connected to the router via ethernet, I tried wifi before with the same issues. I can SSH via ethernet and wifi, I can ping the Pi, from the ...
yes's user avatar
  • 1
0 votes
1 answer
59 views

Cannot connect to other instances within an AWS LAN

My client installed several AWS instances, all in the same region/datacenter. My task is to install a Redis and a Postgresql instance on one of the machines and make the data store/database accessible ...
Bloehdian's user avatar
0 votes
1 answer
2k views

My Ubuntu 20 can't connect to internet despite the working wifi

My Ubuntu 20 cannot connect to any sites anymore. My wifi is working fine & the wifi connection icon on the top of my desktop shows that i'm connected, but i'm not! I've checked to make sure I'm ...
Sina's user avatar
  • 121
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1 answer
1k views

NordVPN on Arch Linux Limited Connectivity

I am using the NordVPN-bin package from AUR on my Arch Linux system (Manjaro KDE Plasma). Connecting etc works just fine, but after I connected to the services I always get the notification: "...
asbaak's user avatar
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0 answers
391 views

networkmanager / nmcli - possible to ignore connection.secondaries for a single connection?

TL;DR - If you have your ethernet connection defined with "connection.secondaries" in networkmanager / nmcli (to auto-connect to a vpn), is there a way to skip / ignore / override the ...
zpangwin's user avatar
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1 answer
131 views

My EPSON ET-2710 printer has a USB connection with a GNOME managed computer. I can print documents but Image Scan ignores my connection to the printer

My computer is a recent ACER Aspire with GNOME environment. I have connected it to my ET 2710 EPSON printer through a USB connection. No problem to print a document. But the connection to the computer ...
Jean Jacques Beaussou's user avatar
9 votes
1 answer
3k views

How to make a systemd-timer depend on internet connectivity?

I'm using systemd-timer to periodically run a script which consumes a webservice. Problem is, upon system resume or wake-up, internet connectivity would not get started right away but the timer gets ...
Zeta.Investigator's user avatar
0 votes
1 answer
1k views

list out all computer node connected to master node

I have HPC access, connected to other HPC via local IP or just simple hostname (i.e., compute1 or node3). I can log in to them by typing "ssh node3" or its IP like "ssh 10.2.6.20" ...
Ravi Saini's user avatar
3 votes
1 answer
4k views

SSH connections frequently disconnected when using a mobile hotspot for internet access

My ssh sessions are frequently disconnected when I use a provider that offers internet service via cellphone towers. They seem to "freeze" and stop responding to anything I've typed, but ...
TiredSquirrel's user avatar
0 votes
0 answers
297 views

How to increase and check number of successful ssh connections to a remote host

I wrote the below loop that creates ssh connections to remotehost1 $ cat sshloop.sh #!/bin/sh i=0 while [ $i -ne 500 ] do i=$(($i+1)) echo "SSH COUNT IS: $i" ...
Ashar's user avatar
  • 511
0 votes
1 answer
3k views

A ping script to check network availability

I want to create a script for ddwrt that pings on 4 hosts to check whether internet is available or not. If out of 4 tests, one of the ping results comes true then assume internet is working otherwise ...
Saman1154's user avatar
0 votes
2 answers
418 views

Why is OpenVPN Client Failing to Connect on Linux?

This VPN works fine in Windows however trying to start it in CentOS works for a few seconds and eventually stops with no message in error logs. Also the server instantly stops responding to pings ...
Harmonytalk's user avatar
0 votes
1 answer
1k views

Bluetooth cannot connect to BT Keyboard

I recently invested in a new Intel NUC and put Arch Linux on it. I also invested in a Keychron K6 however I have hit a brick wall when it comes to connecting to it via Bluetooth. Here is what ...
Phillip Dews's user avatar
1 vote
1 answer
109 views

Connect to wifi w/out DE and DM

When installing LAMP server, I went for tasksel, and got my DE (Xfce) and seemingly also display manager (LightDM) removed (this is a known "bug", believe it or not). Now I just need to ...
jaam's user avatar
  • 296
2 votes
0 answers
164 views

Make NetworkManager connect to the preferred network when it becomes available

I have a Debian Linux server and two wireless networks, A and B. Network A is the preferred, faster network. B serves as backup. Therefore I have set both to connect automatically in NetworkManager ...
Rolf's user avatar
  • 789
4 votes
1 answer
12k views

Testing connectivity and port availability using SSH instead of Telnet

Assume that you have a pair of UNIX/Linux machines. You want to check if both machines can connect to each other via an arbitrary port, say, TCP 111. Log into the shell of Machine 1 (10.0.0.1). If ...
Culip's user avatar
  • 144
1 vote
1 answer
512 views

Emulating temporary loss of internet connectivity programmatically

Is it possible to make a program lose and get back it's internet connection by some other means than disconnecting/connecting the cable or putting the interface down/up? That would be necessary in ...
TheAG's user avatar
  • 325
0 votes
1 answer
444 views

Ethernet connection unmanaged

I am using elementaryOS 5.1.7 Hera and I suddenly don't have any ethernet connection. Network manager says it's unmanaged. I checked that /etc/NetworkManager/NetworkManager.conf has indeed managed=...
Plussoyeur's user avatar
0 votes
0 answers
57 views

Establish LTE-internet connectivity

I am trying to establish internet connectivity using a SIM card. Running the command nmcli radio shows WWAN to be enabled, however the command: nmcli device status returns: DEVICE TYPE STATE ...
cheesus's user avatar
  • 185
0 votes
1 answer
1k views

How can I test GRE packets connectivity?

If desiring to test TCP port 5900 to a remote host (say IP 111.222.111.222 ), I do : l$ nc -v 111.222.111.222 5901 Connection to localhost 5901 port [tcp/*] succeeded! RFB 003.008 As can be seen, ...
Sopalajo de Arrierez's user avatar
1 vote
1 answer
809 views

Intermittent internet connection/DNS issues with Debian

For the last 15~20 days I've faced a inconsistent connection issues. I've tried several things, and mostly I can't say if they helped or not. What I can say for sure: When returning from hibernation, ...
Justcurious's user avatar
0 votes
1 answer
1k views

Bluetooth keeps changing from A2dp to headset and loses connection on Debian Buster with JBL 4 Speaker

since over a year I am having trouble with the bluetooth connection to my JBL 4 speaker. It looses connection again and again. I created a script according to what I found on the internet to reconnect ...
MiSt's user avatar
  • 1
0 votes
1 answer
67 views

Bizarre connectivity issue

I just got the most bizarre connectivity issue. WiFi connects and also cable. I can ping and even connect to a VPM (forticlient), but the browser can't reach any page. It throws "server not found" ...
young marx's user avatar
0 votes
0 answers
41 views

Interernet is not available in Browser

I am using Linux Mint 19.1. I am getting internet in Laptop but I am not getting internet in Browser. My laptop suddenly shut down after that I am not getting internet in my Browser.
Foysal's user avatar
  • 113
1 vote
0 answers
403 views

Make ssh client process end once the connection to server was lost!

I have a ssh process hanging around (i.e., does not exit and end). I can test that no connection with the sshd server exists anymore ss -t | grep [SERVERIP] yields no results. Additionally, being ...
fraleone's user avatar
  • 827
0 votes
0 answers
275 views

Connect docker-container with other container by unit-socket

I'am trying to connect to containers by unit-socket/ docker run -d -v /var/lib/docker/overlay/[container_id]/var/run/postgresql/.s.PGSQL.5432:/socket_volume/.s.PGSQL.5432 -p 50000:8080 my_repo/...
Jelly's user avatar
  • 133
0 votes
0 answers
331 views

ssh session for Azure CentOS virtual machine keeps getting disconnected after only few seconds of inactivity

ssh session with PuTTY to an Azure CentOS virtual machine keeps getting disconnected after only few seconds of inactivity. Also i am running a self developed process that gets killed for no reason .. ...
Sana.91's user avatar
  • 101
0 votes
1 answer
324 views

How to configure stderr from nc?

I would like to check port connections with nc and forward the result to a text file. stdout works fine. stderr is empty, if you don't use -v (which I dont want), so I would like to configure the ...
stefan_parpart's user avatar
1 vote
1 answer
1k views

No Link on WAN Port for TP-Link Archer C7 AC1750 v4 Running OpenWRT 18.06.4

Looking to upgrade from a working Linksys router running OpenWRT Kamikaze, I selected the TP-Link Archer C7 based on happy Reddit reviews of OpenWRT running smoothly on it. It seemed lucky to get the ...
Chris Jenks's user avatar
2 votes
1 answer
340 views

how do I tab in telnet when executing it on remote host by ssh?

How can I use tab when I use telnet on a remote host by ssh, I have something like: ssh -o StritHopstKeyChecking=no -p port user@hostA telnet hostB; echo "Reconnect?"; while read < /dev/tty; do ...
stdcerr's user avatar
  • 2,079
2 votes
5 answers
9k views

(Ubuntu 18.04 LTS) Can't switch off Airplane mode with physical switch

I'm running Ubuntu 18.04 LTS on an MSI GS65 Stealth 8RE. When the laptop gets out of sleep mode, air plane mode is on and Linux says it must be deactivated via a physical switch. The FN+F10 ...
deque's user avatar
  • 123
2 votes
1 answer
1k views

Can't connect to Github from one PC, every other website works fine

Running Ubuntu 16.04, I can connect to other websites fine: ping google.com PING google.com (172.217.25.206) 56(84) bytes of data. 64 bytes from nrt12s13-in-f14.1e100.net (172.217.25.206): icmp_seq=1 ...
Omegastick's user avatar
4 votes
1 answer
3k views

USB-Ethernet adapter stops working periodically, as if going to sleep

My laptop uses a USB-Ethernet adapter for a wired connection. Periodically, while actively working, the connection is lost. NetworkManager tries to connect and to obtain an IP address via DHCP but ...
BugBuddy's user avatar
  • 648
-1 votes
1 answer
5k views

Unable to telnet to a server

Here are 2 servers 192.168.0.12 192.168.0.21 there is a service running in 50070 port in server 192.168.0.12 when I do telnet from 192.168.0.21 server it fails: $telnet 192.168.0.12 50070 Trying ...
Gerg's user avatar
  • 113
1 vote
1 answer
2k views

Mac Unable to Connect to a Wifi Hotspot - Google Starbucks

I have a MacBook Pro that is not connecting to a Wifi Hotspot - namely, Google Starbucks. The problem is that the login page will not pop up when I connect to the network as it does with every other ...
I.A.S.'s user avatar
  • 11
1 vote
2 answers
589 views

get pppd exit code - how?

I'm designing some reporting system on Raspberry Pi system which connects to world thru 3G usb modem controlled by pppd. 99,999% of time connection works ok, but sometimes it drops and further ...
DmitryD's user avatar
  • 23
1 vote
0 answers
78 views

Change USB Port Health (Connectivity) Check Interval

Is there any way (in Linux) to change the interval that the system polls the USB ports for a health (connectivity) check? Or even turn off this check? Background: I have a small box that the devices ...
DD-Nerd's user avatar
  • 55
2 votes
0 answers
613 views

Hadoop cluster not listening on port that I configured. What is wrong?

I set up a Hadoop cluster with RHEL 7.4 servers. There is no firewall between them. I am running Hadoop 3.0. On the namenode the core-site.xml file is configured to use port 54310. I run this ...
Jermoe's user avatar
  • 111
2 votes
0 answers
970 views

The command "hdfs dfsadmin -report" fails because "failed to connect to server"

I am trying to configure a multi-node cluster of open source Hadoop. I have Hadoop 3.0 installed on the namenode and the data node. Both are running Linux (SUSE and Ubuntu). None are CentOS, RedHat ...
Jermoe's user avatar
  • 111