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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Connecting to OpenVPN Server gives TLS Error [on hold]

I'm trying to set up an OpenVPN server on my Raspberry Pi and connect my arch linux system to it. I have tried several tutorials online, but everytime I try to connect my client (arch linux) to my ...
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1answer
23 views

Login failed for user 'sc' even after creating user

I am trying to run a web application but I just cannot login with a user account (sc). I keep getting Login failed for user 'sc'. Description: An unhandled exception occurred during the ...
0
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1answer
21 views

Hyper-V: Virtual machine connected to external network has no access to it [on hold]

Setup: Windows Server 2016 Tech. Preview with enabled nested virtualization (Server 1) runs a VM with another Windows Server 2016 (Server 2) which in turn runs a Windows 10 VM (Workstation). On ...
0
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1answer
22 views

postgresql port closed for remote access

I'm trying to connect to a PostgreSQL database in an Ubuntu Server, which I have root access, but somehow I can't open port 5432 for remote access, just local. This is what happens when I use "nmap" ...
0
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0answers
30 views

Nginx closing connection

I recently set-up a staging server for our company. On it we run our rails applications & php websites and recently one of my https sites isn't working anymore. I have one configuration template ...
0
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4answers
120 views

Optimal value for Nginx worker_connections

Nginx worker_connections "sets the maximum number of simultaneous connections that can be opened by a worker process. This number includes all connections (e.g. connections with proxied servers, among ...
1
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1answer
35 views

Way to kill http nio connections in Tomcat

We have an application that sends messages to users to access our server (Apache tomcat) through an HTTPS connection with their devices. Problem is that this users applications is keeping the ...
0
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0answers
18 views

How to force persisten connection squid

How do I make a persistent connection in squid, I'm using ubuntu 12 with squid 3.1.19, this is the request I do OPTIONS http://cmsprod.imusica.com.br/index.php HTTP/1.1 and response: HTTP/1.0 200 ...
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2answers
51 views

Internet is very slow because of many unknown connections from and to some amazonaws EC2 servers, Dropbox?

We are currently having issues with the internet speed at work. We asked for a global report to our ISP in order to understand what was happening, and in their report (in the "conversation report" ...
0
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0answers
30 views

Port 1433 blocked to Azure SQL Server

I'm having an issue connecting to an Azure-hosted SQL Server. After much trial and error, and studying the handshake, I've determined that port 1433 is being blocked somewhere along the way. I've ...
0
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0answers
6 views

method for listening for samba connections

I am setting up my RPi to handle a number of NAS server tasks. The first is to locally host my HDD data over a samba share. The second is to become a bittorrent box (with deluge). From what I ...
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0answers
29 views

Windows Server 2012R2 VPN client connects, but nothing else

I installed VPN on our 2012r2 Server. This network does not have a domain, it simply in workgroup configuration. From the VPN clients, I can connect to the VPN, but that is all. I can't ping ...
0
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0answers
13 views

Route between E1 devices

I have this topology and I need to configure routing between my CISCO 2911 routers to connect my devices, that are using E1 without any timeslots separation.
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1answer
22 views

netstat shows inequal amount of mutual connection between two hosts

I'm trying to investigate why the amounts of connections between two physical hosts 10.240.48.9 и 10.241.169.7 (CentOS 6) don't match each other (diagnosed from the each one respectively): On 10.241....
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0answers
8 views

server error connection from another pc

I've created a PostGIS database in a computer but I can't connect to it from an another computer, the error message is connection time out, is the server accepting connections TCP/IP in port 5432? ...
0
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0answers
20 views

Draytek Vigor 2830n WAN connection dropouts

For the last two weeks we have been experiencing terrible connections speeds. When running a speed test it normally starts off OK at around 15Mbps but then drops to 0.7Mbs or below making working ...
0
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0answers
16 views

Unable to Ping over wifi [duplicate]

We have 2 PCs and 4 laptops in the office, and we use D-Link 2750U to connect to internet. All the computers can connect to the internet successfully. One thing that I noticed recently, is that PCs (...
0
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3answers
82 views

SQL Server Named Pipe Error

I have been trying to install SQL Server Express for a few days now. I tried 2008, 2012, and now 2014 all with the same result. I cannot connect to the database remotely, even if I turn the firewall ...
0
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1answer
23 views

NRPE Firewall blocking xinetd

From one side, my nagios server, IP 10.1.1.232. Here is my Nagios's xinetd's NRPE config : # default: on # description: NRPE (Nagios Remote Plugin Executor) service nrpe { flags = ...
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0answers
13 views

How to set up a “dial in” connection to a Windows 7 computer to create a local area network [duplicate]

I have a Windows 7 computer that will be offline except for a modem connection. I need to set up a "dial in" connection to an remote unattended Windows 7 computer via telephone modem to be able to ...
0
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0answers
29 views

Can access server via SSH/FTP but other protocols won't work

I followed this guide to setup an "Upside-Down Ternet." Everything was fine up until the part where I configured IPTABLES then I lost SSH connection. Now I expected that because I'm messing with ...
0
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0answers
93 views

telnet “connection closed by foreign host” for some servers, not all

I started having issues connecting to our mail server on 1 server, but the others are able to connect without issue. telnet my.smtp.server 25 Trying 1.2.3.4... Connected to my.smtp.server. Escape ...
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0answers
78 views

Connecting to a MariaDB server with master-master replication setup hangs randomly

I have a two server MariaDB master-master setup as documented on the DigitalOcean community page: https://www.digitalocean.com/community/tutorials/how-to-set-up-mysql-master-master-replication. The ...
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1answer
96 views

Samba connection reset on Windows 7 (System error 5)

I am having problems setting up a Samba server, or to be more exact the problem is that i have set up the server, but it sometimes stops working for several hours and then starts again. It is always ...
0
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0answers
21 views

Windows/IIS7.5 half-closing connections resulting in sockets in TIME_WAIT

I'm seeing scenarios where the client side initiates the TCP close but the webserver (IIS 7.5) simply responds with an ACK and the connection ends up in TIME_WAIT. Why would it do that? Typical HTTP ...
0
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1answer
35 views

Cannot login to ssh - stdin: is not a tty

FIXED If you have seen this in the login screen of your server... stdin: is not a tty ...you know the trouble. Well. I've had the exact same problem on my root server. I tried several things to ...
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0answers
48 views

One-way connectivity on DC

I have a Windows Server 2012 R2 server as a domain controller and DNS server for the AD-integrated domain. Using the server's IP, the server can be pinged, the default IIS website can be accessed, VPN/...
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0answers
38 views

Google Cloud Messaging - server side - connection 502 error

i have problem with connection from my application server to GCM : gcm.googleapis.com:5235 Exception: XMPPError connecting to gcm.googleapis.com:5235.; : remote-server-error(502) I have exact same ...
0
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1answer
60 views

Apache Empty response Diognosis

My server gives empty response randomly. This is about four weeks that I cant figure out what is the problem. I will try my best to give you extensive information about my problem. sever specs: ...
0
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1answer
112 views

Running nginx on AWS is sending back 'ERR_CONNECTION_TIMED_OUT' responses

I have installed nginx on an Ubuntu AWS (EC2) node and confirmed it is running via ps -aef | grep nginx. In the server section I have: server { listen 8080; server_name ec2-<blah&...
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1answer
66 views

Iptables: Difference between RELATED and ESTABLISHED state?

I've tried reading many articles on the internet but none of them are quite clear. I also know similar question has been posted here before but none of them explain my situation. Earlier I ended up ...
0
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0answers
43 views

Ubuntu 14.04 SSH from Third Party, No Error Cause

I have two instances of Ubuntu 14.04 running. I am utilizing a third party service that accesses the instance(s) via ssh using its own generated key pair, of which it provides me the public key. I ...
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0answers
9 views

Can't connect to the IBM bladcenter switch

I got IBM 8677 bladecenter with hs21 type 8853 & 7995 I connect the Ethernet SM I\O module , configed it in the IMM to same subnet as my host. I dont know why , but I cant telnet it or ping it . ...
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2answers
44 views

IPv6 DNS Connectivity through IPv6

My clients are using IPv4 in the USA. Their ISP is not ready for IPv6 yet. My public web server is on only IPv6. It is registered with a DNS Provider(GoDaddy) that is IPv4 and IPv6 enabled. Can my ...
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0answers
31 views

nginx access log and $connection variable

!Hi, guys! I've added $connection variable to output of nginx access log and everything seemed working fine. But i've noticed that sometimes different client IP's assigned to the same connection. Up ...
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1answer
56 views

SSH RDP Tunnel and Port Connection

Tried doing some research but can't really figure out the solution (or how to troubleshoot further) for this problem. Objective and Reasoning for setting this up: SSH Tunnel RDP from work to home ...
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0answers
22 views

MONGO - mongod - no connection to database [duplicate]

i have an testserver running under ubuntu 14.04 with public ip address. On this i have plesk 12.5 and mongodb 3.2. For administration of mongo i installed phpmongodb. Then created an database, an ...
0
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1answer
79 views

Increase Connection Timeout for “ssh: connect to host xxxxx port 22: Connection timed out”

I need to perform a sort of scan over 20k+ machines in the network (all linux), and I am using ssh to connect to each machine, run a small command on it, and gather the output. I am running parallel ...
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0answers
25 views

Does nginx consider a page request as one request or more (including static files)?

Lets say we have a configuration as below: http { limit_conn_zone $binary_remote_addr zone=conn_limit1:12m; limit_conn_zone $server_name zone=conn_limit2:24m; [...] server ...
1
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1answer
127 views

Nginx Stress Test with httperf - Large Data Transfer Differences from Apache Server

I'm running a simple httperf stress test on a quad-core Nginx server, pointed at an HTML/PHP document. Large connection rates quickly begin experiencing high connection and response times (see the ...
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votes
1answer
44 views

What is the difference criterion between max_clients and max_conns? [closed]

I'm new to server administration; What are the main \ Criterial differences between max_connections and max_clients a server can handle? It can be sound very similar,
0
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1answer
41 views

How to change MySQL user permission temporarily (Per Connection)

I do not know if it is possible at all or not. What I want is that, when a certain connection is established, the user not be able to modify data with that connection. This is the scenario: ...
0
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0answers
296 views

Apache times out unexpectedly ( despite setting Timeout in httpd.conf )

I've a PHP script (on centos, apache 2.2, php 5.4 & apache-mod-php5) that its execution takes about 2 minutes, but 1 minute after sending request, my connection to apache server times out and ...
0
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2answers
83 views

Using a specific network adapter for a service

On a Synology NAS this is called: Service-interface binding Is there something to specify the network adapter used by a certain service? I don't wan't all applications running on that adapter. I only ...
2
votes
0answers
76 views

Website inaccessible until host is pinged from client (on a class A subnet)

There is this really weird issue on the internal network, this happens constantly to "random" machines. Machine (client) boots up, goes to some-intern-website-which-is-not-accessible-from-internet....
0
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0answers
137 views

SQL Server 2008 R2 eventually sends RST instead of FIN/ACK

My SQL Server 2008 R2, running on Windows Server 2012 R2 unexpectedly sends connection resets (RST packets) to its clients performing series of small queries. The problem is, it eventually happens. ...
0
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0answers
10 views

debug connection to other server

My server suddently is unable to connect to other servers through Curl, file_get_contents etc. This issue is reported for at least 5 different server Ips. Whereas it still works with many others. ...
4
votes
1answer
2k views

Why are connections in FIN_WAIT2 state not closed by the Linux kernel?

I have an issue in a long-lived process called kube-proxy being part of Kubernetes. The problem is that from time to time a connection is left in FIN_WAIT2 state. $ sudo netstat -tpn | grep ...
0
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1answer
113 views

Connect remotely to Database by SoftEther VPN Client

As i have just started studying about Softether VPN, i have some questions : I want to work at home, and I installed SoftEther Server at my company, and SoftEther Client at home, I successfully ...
3
votes
1answer
150 views

ssh on Ubuntu fails after first time : Asymmetric routes, SSH connection fails to properly establish

I have been baffled by this problem... I have an exs host on subnet 10.128.0.1 and guests on 10.128.20.1 subnet. I have another box on 10.128.0.1 subnet with vms on 10.129.18.1 ... Router is simple ...