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

learn more… | top users | synonyms

0
votes
1answer
129 views

Mailserver 1 <--X--> Mailserver 2

First I try to explain my server environment. I have two virtual servers, the host server is Ubuntu. The mailserver is Debian Squeeze installed with this tutorial: ...
2
votes
3answers
381 views

Fast, reliable data transfers from/to China

We are a small company and we will need to transfer rather large amounts of data (10GB+ each time) between Europe and China in the near future. As many may have experienced, Internet connections to ...
0
votes
1answer
594 views

Network disconnect each day almost same time

I have dhcp server (win server 2008 R2). Got about 30 pc in network. But I am facing problems on 2 of them. I have set IP manually on them. Problem is, that these 2 comps disconnect from network ...
1
vote
1answer
70 views

connect to SQL Server 2008 r2

I found about a dozen questions like this, read them all, but still can't find the problem. I have a dedicated server running SQL Server 2008 R2 express. I enabled TCP/IP, added firewall exceptions, ...
-1
votes
1answer
374 views

Server can't connect to the internet

I have a headless file server running debian that just stopped connecting to the internet. Console output: Dmesg: [ 84.248344] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 85.941389] svc: ...
2
votes
1answer
82 views

Are there any other causes of this error that are NOT related to initial setup?

I'm trying to diagnose an issue at a customer site. They are receiving the following error: A network-related or instance-specific error occurred while establishing a connection to SQL Server ...
1
vote
2answers
493 views

Clients can make maximum only 15 connections to ubuntu custom server

I have a custom server in C# being run on Ubuntu 9 under mono. I can make up to 15 silverlight clients connect to the server. When I make the 16th, it just waits. And if I close one of the established ...
1
vote
1answer
2k views

MAX Connection Pool Setting SQL Server 2008

We are expecting a large number of users to hit a Website built with IIS/.Net 4.0 that our SQL Server 2008 database server is providing data for. The database is around 2GB in size. We are ...
-2
votes
1answer
140 views

Apache connection pooling

I want to implement apache connection pooling between two apache2 servers. So that there are connections already established and my response time is reduced. I am aware that we need to use either ...
0
votes
2answers
532 views

suggest a tool similar to tcpview

Can anyone suggest a tool for Windows similar to Sysinternals' tcpview which monitor current all connections and also counts and shows traffic/speed?
3
votes
1answer
5k views

PPTP connection fails with errors 800/806

I've got a client (Server 2008 R2) that won't connect to our production environment PPTP VPN server (Server 2003, running RRAS). The server is behind a firewall that has TCP1723 open as well as GRE. ...
0
votes
3answers
711 views

Why cannot connect to SQL Server by the full server name with instance name?

For some reasons, I cannot connect to my SQL Server with full name + instance name (e.g. server_name\MSSQLSERVER) by SMSS. However, I can connect by simply using just server_name or localhost. When I ...
0
votes
3answers
1k views

Ping host computer from installed Ubuntu on virtual box

I have installed Ubuntu 11.10 on Virtualbox 4.1.8. My own OS is Windows7 x64. I need having a connection between these operation systems, but there are many choices. NAT, bridge, Host-Only, etc. I ...
0
votes
2answers
427 views

TCP what's the purpose of the third step of 3-way-handshake [duplicate]

Possible Duplicate: Why is it 3-way-handshake and not more? Example: If a client wants to talk to a server, it just tells the server that it wants to establish a connection, then the server ...
1
vote
1answer
678 views

Slow connection times from remote server doing apache bench

I am trying to measure perfornace on nginx with ab. Doing the same ab from the local machine gives me about 10 times the requests per second as from a remote machine that is located on the same ...
0
votes
1answer
125 views

Linux network adapter keeps changing settings

I'm running CentOS 5 and noticed for the past week that eth0 settings keep changing and I have to reset them. Any ideas what it might be or where I need to start?
0
votes
1answer
120 views

Setting the connection timeout in virtuoso server via connection string

I started the virtuoso service on windows with the following configurations (this is the important part of the config file): ResultSetMaxRows = 10000 MaxQueryCostEstimationTime = 40000 ; ...
0
votes
2answers
194 views

Reflect SVN server to /var/www/ directory & 2 other questions

Question 1: I'm setting up a SVN server on for development, how do I serve the files from the /var/www/ which is my root of my website which I'd like to manage the files via SVN that would reflect ...
-1
votes
4answers
175 views

More important ping or hardware [closed]

I am not an expert so I would ask to you please. We are looking for a dedicated server for minecraft for our community, we have two options: 1. Intel® Core™ i7-2600 Quadcore 3.40GHz incl. ...
-1
votes
2answers
544 views

Mysql blocked my webserver max_connect_error reached [closed]

Last week end, one of my two webservers was blocked by mysql server. The result is all requests on that blocked webserver show a taylored error page. I'm thinking to implement a script to prevent ...
1
vote
1answer
85 views

Accessing database from local network

I would like to access database running on virtual machine which resides in server connected to local network. Here's the whole situation: There is Windows Server 2008 R2 Datacenter running as ...
3
votes
2answers
703 views

Tracking down “Connection reset” errors in Linux

I'm handling large numbers of concurrent downloads (approx. 500 per server) using Java. All the files are being downloaded from Amazon S3, and the downloading server is an EC2 m1.large instance. ...
1
vote
2answers
4k views

How to check fiber connectivity in ESXi 5.0?

On a VMware ESXi 5.0 host, how can I check if fiber storage adapters are properly connected to the fiber switch/SAN, i.e. if the fiber link is up?
0
votes
1answer
137 views

Is a retransmitted SYN *EXACTLY* the same as the original?

If I have a client trying to connect to a TCP server, and the client sends a couple of retransmits trying to establish a connection, is there ANY difference in the SYNs it will send? If the server ...
5
votes
3answers
2k views

apache webserver unresponsive with server-status showing all child processes waiting for connection

My setup: i have 3 nearly identical webserver machines serving the same high loaded dynamic website with simple load balancing over dns. The service has been working for over two years with the same ...
0
votes
1answer
2k views

Strange Jmeter connection refuse on Tomcat

I tried difference setting in Jmeter and Tomcat. If the Threads number in JMeter is 1~200, Then tomcat is okay. If It is 300, Then after serving few requests, tomcat starts to output errors. Here ...
0
votes
2answers
100 views

Keeping connections open

I'm new to cURL and I'm trying to do something reasonably simple. I want to login to a server and download data at regular intervals over a few hours. First, I login to the server - which I've ...
5
votes
1answer
1k views

Finding short-lived TCP connections owner process

Running tcpdump on local connections to an apache server, I found TCP connections being established and closed immediately every 2 seconds. How do I find which process is responsible for these? ...
1
vote
2answers
177 views

Connecting to a Server with Laptops

We have a small office with 7 staff that work in it. We have recently got hold of a server in the bid to keep office work separate to private work. What is the best way for the laptops to connect to ...
-1
votes
2answers
419 views

Can't connect to SQL Server instance through my app but I can with SqlCmd [closed]

I can't connect my VB app to an SQL Server 2005 instance because "server don't exist or access has been denied" (the Conection String is correct because the app works in other networks and also i ...
2
votes
3answers
730 views

DDOS Deflate Safe Connection Limit?

I work for a site that often gets attacked by bot networks. We have started to use this tool: http://deflate.medialayer.com/ which auto-bans IPs that have more open connections than the set value. By ...
4
votes
6answers
714 views

Effect of distance from server on page load speed

I measured the load speed of a static image file severed by nginx from my server (using pingdom service). The server should normally process this request within few seconds. My server is located in ...
1
vote
3answers
654 views

MySql: can connect normally to local db, can connect via TCP remotely, but cannot connect via TCP locally

Host A is running a mysql server. On A, I can connect to the db: hostA: mysql -p I have allowed user X from host B to connect. I am able to connect via this: hostB: mysql -h A --protocol=TCP -p -u ...
0
votes
1answer
165 views

If linux server is connected to router, internet connection for the whole network will not work

I have a machine (Fedora) which is using iptables (acting as firewall). The system worked a long time, but now there is a problem. The internet connection was failing. I looked through and found out ...
3
votes
1answer
5k views

Failed to connect to MySQL at localhost

I recently installed MySQL on my machine using MySQL installer. I am using it as part of an Apache Tomcat server I'm running on localhost. I linked the database to Netbeans and everything was ...
0
votes
2answers
512 views

SSH occasionally (rarely) doesn't connect

I've been running this script for a few days: while [ true ]; do ssh USER@SERVER echo -n . || date +"%s"; done Obviously, my terminal is filled with dots, but sometimes (quite rarely) I get this ...
-2
votes
1answer
78 views

Accessing a connected device through LAN [closed]

I have a metered APC Power Distribution Unit (PDU) which is capable of spewing out the current load, power and such information through a LAN cable. I'm connecting the cable from the PDU to a server ...
0
votes
1answer
125 views

How can I debug a hanging ssh connection?

I have two virtual servers with the same host provider. After regenerating my SSH keys on my client machine (local) I con only connect to one of the virtual servers. When I connect to the other (both ...
2
votes
1answer
1k views

Is it possible to see active connections in nginx?

Is it possible to see what URLs are actively being served by nginx (i.e., see the URLs that are in the middle of being responded to, not the ones that nginx has finished responding to). I would like ...
10
votes
6answers
15k views

How to force MySQL to connect by TCP instead of a Unix socket?

I would like to analyze mysql traffic. Right now, all mysql requests are sent to the MySQL unix socket: unix 2 [ ACC ] STREAM LISTENING 3734388 15304/mysqld ...
0
votes
1answer
1k views

What is responsible for Connect/Send/Wait in a HTTP request?

Services like pingdom and Google speed analyze the time consumed for reading a HTTP file. This includes DNS: Obviously, DNS management to interpret the namespaces is responsible. Connect: ??? Send: ...
0
votes
2answers
190 views

ADODB Connection - Webserver doesn't resolve the hostname of the mssql server

I have a mssql connection resource file as belows: <% Set Conn01 = Server.CreateObject ("ADODB.Connection") Conn01.Open "PROVIDER=SQLOLEDB; Data ...
1
vote
0answers
565 views

apache as proxy server ftp request connection times out for certain connections

I have setup my apache to act as proxy server by configuring it as: [server]# cat /etc/apache2/httpd.conf Listen 10.2.28.56:8787 ProxyRequests on <Proxy *> Order deny,allow Deny from ...
4
votes
1answer
990 views

IPtables rate-limit, What are the differences between modules? Recent, Limit

I am doing some rate-limiting with IPtables, and i'm not sure if I should use "Recent" or "Limit" What are the differences between the two? If they both achieve the same result, which one has ...
2
votes
1answer
10k views

Unable to connect to remote host: Connection timed out when trying to telnet to MySQL?

When trying to connect to mysql server via telnet I am getting following error: telnet localhost 3306 Trying ::1... Trying 127.0.0.1... telnet: Unable to connect to remote host: Connection timed out ...
2
votes
2answers
10k views

tcptrack shows SYN_SENT connections, does that mean the SYN package reached the server?

our server suffered a serious connection timeout problem, so we track tcp connection with tcptrack we found out that, if the client started to connect to the server, tcptrack shows the connection, ...
0
votes
1answer
648 views

Can not see drive in Remote Desktop Connection

I did an upgrade from Windows XP to Windows 7. Since I did that I can not see my drive. Of course I set the local ressources settings and the remote settings. The operating system on my server is ...
1
vote
1answer
271 views

Maximum Concurrent Connection of MySQL server?

For the following hardware specification, how can I estimate the maximum concurrent connection of MySQL server? Intel Xeon E5620 2.4GHz 12MB L3 Cache 1066MHz 4GB x 3 1333MHz DDR3 ECC RAM 300GB SAS ...
0
votes
1answer
573 views

Firefox users getting intermittent Connection Reset errors when downloading Zip files

I've got a site running on IIS7. Intermittently, Firefox users will get 0k files, as a result of a "Connection Reset", when downloading large zip files. Usually these are in the range of 70-100MB in ...
6
votes
2answers
3k views

Impact of Connection Close vs Keep-alive

I'm configuring our servers, and due to the nature of our load balancer, we can't send connection keep-alive headers. I'm trying to determine the impact of sending these headers to both the end-user ...