Questions tagged [connection]

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

Filter by
Sorted by
Tagged with
0 votes
1 answer
10 views

Squid basic auth connection problems

We are using squid proxy with basic authentication. Each user has it's own outgoing ip configured. See parts of our squid.conf: # Authentication Basic Auth auth_param basic program /usr/lib/squid/...
user avatar
0 votes
0 answers
29 views

Docker container has no internet ... GoDaddy hosting

It's GoDaddy hosting (Linux 4.15.0-176-generic #185-Ubuntu) docker 1.5-1build1 $ docker pull busybox $ docker run busybox ping -c 5 google.com PING google.com (142.251.33.206): 56 data bytes --- ...
user avatar
1 vote
0 answers
18 views

Cannot get a response from host, but only from my internet connection

I'm trying to connect to a website that I own. It's a domain that points to a shopify store. The browser just hangs when attempting to load the site. When I issue a request using curl I get the ...
user avatar
  • 821
0 votes
2 answers
64 views

Unable to connect to my self hosted cloud MQTT broker

I have followed the instructions to configure Mosquitto on CentOS 7, provided by digital ocean. I believe I have most of the stuff set up correctly, I was able to follow all the instructions with some ...
user avatar
0 votes
0 answers
76 views

Infiniband adapter down

edit: On CentOS 8.5, tried with Mellanox driver 4.9-4.1.7.0 (legacy) and 5.5-1.0.3.2: I am not able to get my Infiniband adapter working. The output of ibstat states that it is down: CA 'mlx5_0' ...
user avatar
  • 31
0 votes
0 answers
106 views

How to close connection when using PSExec on multiple remote computers?

I am using PSExec to run scripts on multiple computers and after a few computers I start getting connection errors (probably because of concurrent connections limit on Windows 10). PSExec command I am ...
user avatar
0 votes
0 answers
22 views

Large number of RST/ACK packages from my Ruby on Rails server

I have a Rails server (ROR) behind my Firewall (FWL). ROR must constantly send information to Digital Ocean Spaces (DOS). Note that ROR is not in Digital Ocean datacenter. ROR <--> FWL <-->...
user avatar
0 votes
0 answers
30 views

error connecting to linux server from windows client

When a windows machine pings to linux server to run application specific python commands, it does connect. The firewall is also disabled on linux server. mongodb is database server here. database is ...
user avatar
  • 123
0 votes
1 answer
1k views

One remote RDP user often gets stuck on "Please wait for the local session manager" from a shared virtual Windows Server 2019; others work

The server is a shared virtual server slice running Windows Server 2019. (Set up by InterServer - I'm the software developer of the customer.) A remote Windows 10 computer in location A usually ...
user avatar
  • 101
0 votes
1 answer
23 views

How do 2 users on ansible node connect to thesame worker node

I set up 2 new users with their respective key pairs,.. their public keys ve been established on the remote host. The problem am having is I passsed the ssh keys on the host file as follows [...
user avatar
2 votes
0 answers
35 views

Server Connection Issue - With OK CPU/RAM

Recently we had an occurrence where we were unable to connect to mutliple masters on our Redis cluster. Connections from our code base were timing out. We were also unable to SSH into the box during ...
user avatar
0 votes
0 answers
16 views

GCP TCP Load balance IP at some countries are failed to connect, TCP 80 443 connected to this IP frequently timeout, any limit of TCP connections?

Hi we create GCP server and load balance at Singapore and Germany, at recently, both this two data centers Load Balance IP at some countries are failed to TCP connection, sometime are OK, but sometime ...
user avatar
  • 1
0 votes
0 answers
49 views

Concurrent ssh connections on control server keep dropping

I'm facing an issue with setup I am using for ocassionally doing maintenance on a bunch of customer servers via remote SSH Following Setup: 1 Control Server X Arbitrary number of Customer servers set ...
user avatar
  • 101
0 votes
1 answer
171 views

syslog-ng / telegraf : EOF occurred when idle - incompatible?

This is a follow-on question from this previous question, created because I found out more information and it's cleaner to pose this as a new question. I'm using syslog-ng OSE v3.31.2 to receive ...
user avatar
  • 353
0 votes
0 answers
118 views

Could not SSH and when I try to connect to the server using telnet I received the error "could not open connection to the host, on port 22"

I have spin up database server using customer AMI. All of my team members are on same network and I am able to SSH and telnet to the server but one of my team member is not able to SSH and telnet to ...
user avatar
0 votes
0 answers
23 views

Google PubSub issues

We have been getting this error for the past 14 hrs on our PubSub application. Request to https://www.googleapis.com/oauth2/v4/token failed, reason: Client network socket disconnected before secure ...
user avatar
-1 votes
1 answer
400 views

Too many RPC connections make web socket closed

Several servers are connected via RPC. There are times when apps in OS have too many RPC calls, which causes the network to become closed. What is the best way to debug or configure my OS? "msg&...
user avatar
0 votes
2 answers
125 views

AWS EC2 MySQL Replication: Config To Query Slave From Master

I have successfully set up a MySQL master-slave situation on separate AWS EC2 instances. The slave is running and is successfully replicating the master. So far so good. Now I want to be able to query ...
user avatar
0 votes
1 answer
150 views

How to access Jetty Server from outside LAN?

I originally posted this question on stackoveflow but was advised that it would be more suited to this site. I am trying to access a Jetty Server deployed on one machine from another machine outside ...
user avatar
0 votes
1 answer
1k views

How to connect backend to a mongodb docker container

I made this docker-compose file as written on docker hub / mongodb then I use the command docker-compose up -d which pretty standard to launch a container. # Use root/example as user/password ...
user avatar
0 votes
0 answers
266 views

Suddenly start getting err_connection_reset

Suddenly I started to get the net::err_connection_reset 200. It only happens in one page of my site, all the other pages load fine. I removed everything from the controller and model and only left the ...
user avatar
0 votes
0 answers
121 views

Connection string for my SQL Server connection from C on Linux

I am trying to connect to SQL Server using C program on Linux. My connection string is this: DRIVER = {ODBC Driver 17 for SQL Server}; Server = 192.168.0.25,52000;Database = db; UID = ud, PWD = pw; ...
user avatar
0 votes
0 answers
19 views

Disconnecting postgres proxy for many connections to single database

We're currently looking into how we could scale a system in which we have many users, each with their own postgres schema, and their own DB user credentials to ensure isolation. This however means ...
user avatar
  • 421
0 votes
1 answer
514 views

No internet access after config iptables

After that configuration: iptables -P INPUT DROP iprables -A INPUT -j DROP iptables -P OUTPUT ACCEPT iptables -A OUTPUT -j ACCEPT Now can't access internet normally or through VPN. What's wrong?
user avatar
0 votes
0 answers
744 views

Cannot connect to RDP on Windows 2019 member server

I just finished standing up a new member-server VM with Windows Server 2019 Standard, but I cannot connect to it on port 3389: Windows Defender Firewall is disabled on all profiles: The services are ...
user avatar
  • 703
0 votes
1 answer
455 views

Can not connect to a Google Cloud TPU using ssh (putty) in Windows

I have a google v3-8 TPU, i can't figure out how to connect to it using ssh in windows. I did every guide there is, but the connection just times out. What i tried (among others): 1. Dos command line: ...
user avatar
0 votes
0 answers
73 views

Less requests per second on Apache Bench test from same server

I ran following test on one of my website from the server where it is hosted itself. ab -n 100 -c 10 https://example.com/ It serves very less number of requests per second. The server configuration ...
user avatar
  • 101
0 votes
1 answer
519 views

Connection to Synology VPN server not working

I own two Synology NAS (at different places). The first one is set up as an OpenVPN server. All my devices(android mobile, windows pc, mac) work fine when connected to the synology VPN server but when ...
user avatar
0 votes
0 answers
29 views

I cannot connect to my VM Instance all of a sudden

I have a Google Cloud VM Instance which had been working perfectly up until today. I have tried to log onto it all day but it won't connect through my phone or laptop. I haven't changed any settings ...
user avatar
1 vote
0 answers
197 views

Can't see node STRAPI CMS application from outside - ERR_CONNECTION_REFUSED

I tried to run STRAPI CMS on my VPS. App runs via PM2 and internal curl is ok, I see response from app curl -v http://127.0.0.1:1337 But external curl is problem, nowadays I want to access just it ...
user avatar
1 vote
2 answers
43 views

Connecting SCA-2 Ultra320 disk to some controller using some cable

This is "blast from the past" type question. I need to make a backup of data stored on SCSI disk used in a large industrial machine. That machine takes SCSI Ultra320 drives like Cheetah 10K....
user avatar
0 votes
0 answers
358 views

ssh connection refused for Google Cloud Platform instance

I am trying to connect to my Google Cloud VM instance through SSH. I didn't have any problem before I mounted a new 500GB zonal persistent disk and even then I was able to ssh and format the disk and ...
user avatar
-2 votes
1 answer
133 views

how can torrent be p2p and without needing to open ports? [closed]

I've been using torrent for years now and I am planning to write a simple golang program to manage p2p connections... But since I see everywhere that for a p2p program to work, one must specify an ...
user avatar
  • 1
0 votes
0 answers
22 views

Even though SELinux, firewalld, iptables are disabled on my VPS "curl: (7) Failed connect to ... Connection refused error" [duplicate]

I rented a KWM VPS storage server (CentOS 7) and I can access it via SSH and SFTP. But I can't do anything with it because it refuses everything. I didn't install anything on it, didn't change any ...
user avatar
0 votes
0 answers
936 views

No valid IP addresses found for subdomain with certbot

I am currently trying to set up an email server, and recently stumbled over getting a SSL certificate from Let's Encrypt in this question and realizing it isn't necessary if I don't have a web server, ...
user avatar
1 vote
1 answer
106 views

Traffic stops after some minutes via VPN gateway between vnet and on premise machines and then starts again

I have a on prem network (192.168.100.0/24) and a vnet (10.0.0.0/16). On prem a Fritzbox 7490 connects with ipsec policy based connection to the VPN gateway in azure. Connection is up and running, no ...
user avatar
  • 11
1 vote
0 answers
102 views

Postgres remote connection timeout works on one machine but not on another

im trying to connect remotely to a postgres database, after opening the connection for my public IP address on the server hosting the database, I was able to connect successfully to the database from ...
user avatar
2 votes
1 answer
352 views

Connect Azure Web App to policy-based VPN

I have an Azure Web App that needs to connect to the addresses xx.x.x.10 and xx.x.x.12 the customers on-premise server. For this purpose the Customer have setup a Policy based VPN (Cisco ASA 9.8) with ...
user avatar
  • 21
0 votes
1 answer
39 views

Customizing Cognos 11.1.6 Connection Portal

Previously in Cognos 10 you could customize the connection portal by adding a company logo and/or fonts and colors. These settings could be changed by editing the banner.css file on the gateway web ...
user avatar
  • 578
-1 votes
1 answer
84 views

DHCP Server stops handing out leases

I currently have a DC running Windows Sever 2008 R2 (yes I know) and for the past two weeks, when employees travel back to the office, they can't connect to the internet unless I do one of two things. ...
user avatar
0 votes
1 answer
185 views

Network settings to execute webapplication performance tests from Windows Server

Web applications needs to be tested from a Windows Server 2012 R2 machine. Performance tests are executed with JMeter 5.3 on 300-400 threads. During test execution, following errors are coming in ...
user avatar
0 votes
1 answer
61 views

Common reasons for refused connection

When you try to access a HTTP server (e.g., www.example1.com) and the connection is refused, what could be some common reasons at the server end?
user avatar
1 vote
1 answer
854 views

UFW blocks Docker interfaces when default outgoing policy is 'deny'

Given that I configured UFW like so ufw default deny incoming ufw default deny outgoing and just allowed certain ports for outgoing and incoming connections. It works fine, except when connecting ...
user avatar
  • 11
1 vote
1 answer
1k views

What is meant by TCP connection pooling?

Why is creating a new TCP connection regarded as expensive? was the question I had in mind when another one came to my mind. What exactly is meant by keeping a TCP connection alive and what is meant ...
user avatar
1 vote
1 answer
377 views

Keeping SSL connection active between reverse proxy and backend server

I have a back-end server (Apache) that is too far from most of our users, so our idea is to implement a closer reverse proxy that will act as a cache. At first glance it worked as a charm. The cached ...
user avatar
1 vote
1 answer
1k views

What is .max_connections parameter in varnish vcl and how to caculate this value for backend nginx server

I have seen .max_connections parameter in varnish default.vcl and by seraching in web, found the artile below .max_connections: how many connections you authorize Varnish to open to this backend. ...
user avatar
0 votes
0 answers
62 views

I can ssh from host1 into host2, but on host 2 I seem to have no connectivity to the network (no ping, no dns, nothing works)

I assume it's related to a bad configuration on host 2 because a 3rd host plugged into 2'socket works fine. This is all wired in the same subnet with a switch in between. 'ping' produces 100% packet ...
user avatar
0 votes
1 answer
72 views

how to do scp in linux

I am getting following error while doing scp, what could be the reason? [~/workspace/xr-dev/call-home/core/src] /usr/bin/scp myfile.c host2:/scratch/shirohua/ shirohua@host2's password: usage: scp [-...
user avatar
  • 1
4 votes
3 answers
748 views

How to intentionally cause ssh root connection refused

Simple, how do I make ssh (port 22) drop/refuse a connection if root@ip_address request is received, but still allow user@ip_address to work properly. Basically hide the fact there's a server at that ...
user avatar
1 vote
2 answers
156 views

Random MySQL connectivity issues?

I can run the exact same command over and over again and sometimes it works, sometimes it doesn't: root@bak-rrk9m:/# mysql -Bsuroot -p"$MYSQL_ROOT_PASSWORD" -h"$...
user avatar
  • 303

1
2 3 4 5
15