Questions tagged [connection]

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

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Hamachi not working when on OpenRCT2

when I run Hamachi with firewall access, and my friend connects to my game of RCT2 (openRCT2), the chat bar on the host computer shows this: Player has joined the game. Player has disconnected (...
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connect Crystal Reports with JDBC to PostgreSQL

I want to connect Crystal Reports (2016, Support Pack 8, version 14.2.8.3426) to a PostgreSQL 12 database. Using JDBC. The database is on my local computer, on port 5433. My database name: ogc ...
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How can i add reserve ip set in my router to my VMware Ubuntu Server [duplicate]

Hi I'm trying to connect to VMware ubuntu server to my router but none of it seems to work since it doesn't have my vmware ip shown in my router. I've tried adding the ip manually and resetting my ...
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Losing connection to servers after 5 min (different ports)

A month ago I moved and made a new contract with a new ISP (Claro Peru). Since I switched from ISP I noticed that my connections to servers are always cut after 5 minutes of inactivity (Connections to ...
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OpenVPN connection stops working every 5 days

I've been pulling my hair out over this issue for awhile. For 2 year, i've been running OpenVPN on Ubuntu 18.04 without many issues. As a virtual server on Virtualbox on a Windows host. Now i've ...
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Postfix builds “Trusted TLS” connection out but always “Anonymous TLS” in

Postfix mail server is configured to use Let's Encrypt certificates. Outward connection to any TLS capable server is built as "Trusted TLS" connection according to /var/log/mail.log. However, all ...
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OpenSSH Connection Close after modification of ciphers / mac

the sshd config file was recently modified in order to have weak ciphers / macs removed. However, it seems like also important macs have been removed as it is not possible to login via SSH anymore. ...
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Tomcat9 http NIO connector keeps lots of stale connections open

I use tomcat 9 to serve lots of clients through HTTP NIO connector on port 8080. Here is my configuration in server.xml : <Connector port="8080" protocol="HTTP/1.1" redirectPort="8443" ...
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Service sometimes working, sometimes not working

I want to connect Centos B's 33060 port from Centos A. I can ping Server B. [root@serverb ~]# ping 10.42.40.182 PING 10.42.40.182 (10.42.40.182) 56(84) bytes of data. 64 bytes from 10.42.40.182: ...
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Can't connect to SQL 2012 SP4 DB after disabling TLS1

I recently disabled TLS 1.0 on our Test SharePoint 2013 farm following guidance found on these 2 blogs: Rodney Viana docs.microsoft.com There was an issue on the site that prompted me to test ...
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Rekeying denies protocols/NAT issue or config?

I'm using strongswan to connect to a MAC server using IKEv2/IPsec configuration. The server uses the proposed algorithms to establish the SA and everything works great. Upon rekeying however, the ...
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Sites infected with malware, now seeing connectivity issues after cleaning

About a month and a half ago, all 5 of my wordpress websites being hosted on Bluehost were infected with malware. A week ago, I was made aware of this when my websites started redirecting users to ...
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Close wait connections increased in my Web app

I have an web application which uses Apache and Tomcat. We have recently seen increase in many close wait connections which resulted in application responding very slow. In the application logs what i ...
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How to connect computers directly with ethernet?

I try to connect two linux computers via a crossover cable. I need help at troubleshooting. I configured ip-address , and on PC1 ifconfig-command shows enp0s7: flags=4163<UP,BROADCAST,RUNNING,...
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108 views

How to close the connection if the user accesses the website using port 443 on http?

How do I give a Connection Reset error to the user if the user accesses the website like http://example.com:443, instead of giving the following error: Bad Request Your browser sent a request ...
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Internet connection slow in linux [closed]

I have a problem with my new internet connection. This is a symmetric 500Mbs connection but i only get 50M in my linux computer. In windows I get 500Mb for up and down with other computer. I know ...
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Server not connecting to the internet on new CentOS install, but ethernet is connected?

In the past, whenever I have set up a new install, I haven't had to configure the IP manually, because the IP configures automatically. Not so in this case. This time around I took a new server and ...
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How to connect Php web app in Linux (Centos) TO Oracle 11g (Database) in Windows Server?

Situation: I am New in linux and deploying projects on servers. I have a server on which i have installed ESXI 6.7. Now i have two Virtual Machines on it. One machine is linux(Centos-8) and the Second ...
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How to access internet from VM instance in Openstack?

I've been scratching my head for last 5 days, almost went to the end of Internet, read a lot of tutorials, made a lot of re installations an re configurations of openstack but at the and of the day ...
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Current Network setup of more than 10 PTP connection from different ISPs, After going Azure how to connect them

Currently I have a full infrastructure setup in my on premises - Oracle database and clients connections. I have now shifting my database over Azure & hence my all clients should connect to server ...
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Can't connect to nginx server from public IP Address

Hi I have a nginx server running on a linux machine. I can connect it to from localhost using curl -v http://localhost:8080 fine. But can't connect it to using curl -v http://<machine-ip>:8080, ...
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How can I debug a FTP connection loss?

I need a little bit help. Currently I have a server in a datacenter and an FTP Server in another that I use to backup files. My problem is that some times the connection just got lost. It may happen ...
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which means double 2 points 192.168.1.2::3 in a vnc connection

install real vnc to make connections to a windows server but at the time of accessing me it appears that to access I must approach it with the route 192.168.1.2::3 I understand that : after the IP ...
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Having troubles to connect to AWS RDS MySQL Instance from my laptop

I created an instance for MySQL. I've already allowed ALL ip's in the security group for inbound and outbound. Now I'm doing mysql -h xx.xx.us-east-1.rds.amazonaws.com -u admin -P 3306 -p and after I ...
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Ubuntu LAMP server suddenly refuses connections

I'll start off with the setup: Ubuntu 18.04 Server with LAMP Stack with WordPress VM in a Proxmox 5 Hypervisor 1 OB 1Gb NIC (pve Gui) 3 TPLINK 1Gb NIC 1 quad port Intel NIC Domain hosted through ...
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MongoDB connection initialisation delay on certain Windows 10 devices

Ref: https://stackoverflow.com/questions/58856620/mongodb-connection-initialisation-delay-on-certain-windows-10-devices System info OS Name: Microsoft Windows 10 Enterprise OS Version: 10.0.17134 N/...
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In which case Apache Httpd writes “X” when connection is closed? Is it client side or server side?

Standing to official Apache mod_log_config docs I see it writes "X" when "Connection aborted before the response completed". Connection status when response is completed: X = Connection ...
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How to diagnose source of website blocking?

When accessing sites through my ISP, certain sites don't load. The DNS resolves fine (via nslookup; also, the hosts file is fine), but then accessing them through any port times out (eg. tracert or ...
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Dropped idle connection after 5 minutes [duplicate]

we're having a strange issue with our Azure virtual machines. When we make a connection to the servers, via socket, then leave it idle for exactly 5 minutes, the connections gets dropped. It does not ...
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152 views

Error: 0xC002918F at FTP Task, FTP Task: Unable to connect to FTP server using “FTP Connection Manager”

I am trying to download data files from a FTP server to local machine through SSIS. But it throws the error Error: 0xC002918F at FTP Task, FTP Task: Unable to connect to FTP server using "FTP ...
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OpenVPN Site-To-Site Setup: Client LAN to Server LAN succeeds, but Server to Client fails

Network setup: AWS subnets 10.0.0.0/24 10.0.1.0/24 10.0.254.0/24 Home subnet: 10.62.5.0/24 OpenVPN subnet: 10.8.0.0/24 At AWS, there's an OpenVPN server running at 10.0.254.234 on Windows 2016. ...
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339 views

LDAP TLS Connection Success but server fail

I have some problem with LDAP over SSL. I generate certificates for server and client. There are verify with no problem: openssl s_client -connect odps03:636 -showcerts -state -CAfile /etc/ssl/certs/...
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Connect to a server from my laptop, through another server which has access to the first one

I have a database running on a server (lets call it server A) on port 1522. I want to connect my client to this server A but the ports are not open. I have ssh access to another server (server B) ...
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Connection to server blocked for no reason [closed]

I have had a VPS in NL for the past 5-6 years and it's been working great. Now one day I suddenly can't access/ping/anything the VPS from my home connection (tried different computers) The confusing ...
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Connect 2 ISP/ 1 Load Balancer/ 1 Switch/ 8 Wireless Routers

I'm building a small network, we have two different ISP, a peplink multi-wan load balancer, one netgear switch with 52 ports and 8 wireless router. So my question i, if it's possible to connect the ...
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Elastic Beanstalk random error - cURL transport error: 7 Failed to connect to host: Connection timed out

I'm using AWS Elastic Beanstalk (on a free-tier t2.micro server) for hosting my website, and run my algorithm which syncs data with Spotify API. Recently (3 days ago), my script started throwing ...
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Fail to ping/ssh from single machine to another specific machine

I'm using Google Cloud, there are 2 machines on the cloud which can't ping each other, A can't ping B, and B can't ping A too; all other machines can ping to A&B as usual. But it happens only on ...
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108 views

SIP call connection is p2p? [closed]

I have a small home server (a ARM64 Rock64 4GB RAM) and am wondering if I want to install a sip server and/or a xmpp server. In the sip case I would like to know if it can handle many active users ...
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114 views

Mysql has gone away error randomly

I have a web application written in php. In this app, I have a script(CLI) which is really heavy. After this script finishes its job, I get "mysql has gone away" error in my normal http request for a ...
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648 views

Not able to ssh after reboot on aws ec2 instance “Connection timed out”

After rebooting an aws ec2 instance I am not able anymore to ssh into it, putty on Windows is telling me "Network error: Connection timed out" and the same happens from the command line on a Linux ...
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Linux Log all tcp new connections

On my linux host I want to get per minute logs of all the new tcp connections being created. I have multiple tap devices on my host from which various are trying to create the tcp connections. I ...
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561 views

Unable to create seemingly simple stunnel configuration

I have a computer at work that is behind a firewall with an internal ip address of 192.168.12.13... the firewall maps ports 40000 - 40019 to matching ports on this local machine. (e.g. 40000 - 40000, ...
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smbcacls fails with NT_STATUS_BAD_NETWORK_NAME while smbclient connects

smbclient works fine: $ smbclient //server1/share1/ -E -W AA -U username%password Domain=[AA] OS=[Windows Server 2008 R2 Enterprise 7601 Service Pack 1] Server=[Windows Server 2008 R2 Enterprise 6.1] ...
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failed to connect to at <ip>:3306 mysql with user <userName>. lost connection to mysql server at reading initial communication packet, system error: 0

I got this error when trying to connect to my MySql Server sitting on a new Server I opened, using MySql workbench. Failed to connect to at :3306 mysql with user . lost connection to mysql server ...
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How to set up AWS connection

For the first time, I have applied for an Amazon Web Service, choosing the Lightsail package specifically. After installing several modules through Putty, uploading the files through FileZilla, and ...
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110 views

How to see all incoming requests to my server? [closed]

I have a third party app and I would like to see how it communicates with the server. Why kind of software/server I am supposed to run to log all possible connections attempts to all possible ports? (...
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286 views

I can't connect to my vpn unless I connect to my server just before (OpenVPN)

so I have successfully set up OpenVPN Servers on a VPS or dedicated server before, but whenever I set one up on a Server that has OVH GAME DDoS protection, it wont work properly. So here is my ...
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60 views

Monitor outbound connections

How I can monitor outbound connection that are made from my server along with the program/application which has made the connection request? I have tried using the below command and I am not much ...
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1answer
81 views

GCP Instance Connection Disruption

I am a novice GCP user trying to run 4 scripts in parallel on an a linux instance with 4 CPUs, 4 GPUs, 15 GB RAM, and 30 GB Disk space. However, a few minutes after initializing my scripts, both ...
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Is it possible to watch the tcp connection packets on a connect call from the command line in linux?

Basically I want to do something like strace ssh user@host and instead of seeing the system calls, I want to watch the tcp connection packets as the connection is established. I'm having this weird ...

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