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Questions tagged [connection]

A connection generally refers to a TCP/IP connection, that is established as the result of the handshake between 2 hosts.

A connection generally refers to a TCP/IP connection, that is established as the result of the handshake between 2 hosts. But can also refer to the establishment of end to end connectivity of the underlying link layer, or a database connection, or some other data-orientated communication that proceeds after an initial negotiation phase.

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When connecting to my server through my domain, I get connection error. however, on a VPN it connects just fine

New poster here so unsure if this is the correct stack exchange. But basically, I use NPM (Nginx Proxy Manager) to direct internet traffic to various VMs running on my hub server running proxmox. Whenever I try to connect to an internet SSL-based…
Ambient Skai
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Connected Host / Hypervisor does not show up in network, but hosted VMs do

I have setup a Debian based hypervisor with a single Ethernet Device, such that /etc/network/interfaces looks like that: allow-hotplug eth0 iface eth0 inet manual auto iface eth0.30 iface eth0.30 inet dhcp auto iface eth0.7 iface eth0.gvlan inet…
philipp
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How can I check if an outgoing connection is blocked by local firewall?

I have a situation, where my server can't connect to an SMTP server, while my PC can. But the same server can connect to another SMTP server. I think that my firewall might be blocking it. How can I reliably test, if this issue caused by my…
Genom
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Intermittent Inbound Traffic Blocked Windows Server 2012 R2

We manage a number of pcs running Windows Server 2012 R2 on various hardware (computers have differing network cards etc.). These machines are connected at different physical locations to a physical gateway/firewall which are then connected to each…
TurbineTech
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running "ssh $hostname -o ConnectTimeout=..." again and again in close time seems to disable ConnectTimeout option

I am improving a script made by third parts. The script runs on a Ubuntu OS. This scripts contains a loop in which about there are about 10 if statements (they involve only localhost), and each one contains a ssh command. So it works like this: the…
Tms91
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EC2 server losses internet connection and application fails to send email, sms and even yum updates

I have 5 EC2 servers in the same VPC and all of a sudden yesterday, all of my applications started failing to send email and sms. So I tried doing git pull of my project it also timed out. Then tried to install telnet using yum that to failed with…
Jeethesh Kotian
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How do I get cURL (CLI) to close the connection made to a https server?

cURL doesn't seem to care about closing the connection to a server even when I include the "Connection: close" header? It respects the header for http, but not for https, seems like? curl -v -H "Connection: close" -o nul --http2…
LaRuim
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HTTP request fails with connection time out, but only from our server

My web application is running on a dedicated linux server located at a major hosting company. It needs to connect to an API provider, but libCurl always reports a connection timeout. I've boiled it down to the simplest test I can, which is to make…
Agent Friday
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Jenkins Plugins Error After Update - "Errors Checking Update Site"

I'm running Jenkins on a RHEL 7.9 server, with OpenJDK 11.0.17. I recently updated Jenkins to version 2.361.4 from 2.346.3. After updating I went to the plugins manager page to see what plugins needed to be updated and I noticed the following: If…
jrd1989
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`docker ps` is silent when connecting to another Host

I am trying to execute sudo docker -H 192.168.100.11 ps from machine A (on remote host), and it does not respond in any way (Ctrl+C closes call). Same time, sudo docker -H 192.168.100.11 version from A runs smoothly. Running command sudo docker -H…
Norritt
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Why does connectivity differ for straight and crossover cabling towards 1Gbit MDI-X capable switch (from Linux OS)?

There's no constraint with directly connecting a Realtek 1000/100/10Mbit transceiver towards a common router. There was no connection ('Could not activate connection: Connection 'Name of Lan connection' is not available on device eth0 because…
beyondtime
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SSH connection sometimes works other no from WIN10 client to linux server

I'm trying to connect in ssh on port 22 (with client putty,mobaxterm..) on a remote machine with Linux, the connection sometimes works and other no. My pc run on win10 and if I try on cmd the command ssh "host" I get the following…
lea pre
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ping, but no throughput to server via wireguard from raspberry pi

I have a wireguard setup with a dedicated root server machine acting as the vpn subnet`s server. As clients, I want to connect a lot of raspberry-pi clients (3&4) - all of them having their own internet connection. While using the same skeleton…
Oliver
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website says connection insecure if typed without the protocol

I have a website and when I type the url with 'https://' the browser shows the site normally, however if I do not include 'https://' in the url, the browser brings me to a page that says my connection is not secure. I keep adding things to my…
brothman01
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BGP: I cannot ping an address even though it exists in the routing table

I have the topology from the attached image with I-BGP neighborship between 192.168.21.1 and 192.168.21.2 and E-BGP neighborship between 192.168.6.1 and 192.168.6.2. I have advertised network 2.2.2.2/32 (loopback address) from R2 and configured…
Alex Dobre
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