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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Enable: Asp.net connection pool monitoring with performance monitor

I'm a C# developer, but I'm running in a system management issue here. Intro: I'm suspecting that an ASP.NET application is having some issues with the connection pool and that the pool is flooding ...
Maarten Kieft's user avatar
4 votes
0 answers
56k views

Cannot telnet to SQL Server on port 1433

I've been working solidly on this issue for the past three weeks. I cannot seem to find where the actual issue is. I just recently found this article on how to troubleshoot the connection. I made it ...
Otacon's user avatar
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4 answers
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Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) on subsequent connection through terminal

My sincere apologies for asking something that obviously has been answered before. The fact that I'm posting is that i would like to be absolutely sure since it's about a live server running currently....
black sensei's user avatar
2 votes
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51 views

How normal are remote connection faults and what do they mean? [closed]

Quick background: I have been having a lot of connection issues with my home network. I finally got my ISP to understand and after them checking some of the problems outside of my home I've gone from ...
Serodis's user avatar
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Where do you find logs about connections on debian?

I installed nginx on debian and then tested it with wget localhost and wget 192.168.1.11 to see if it responds to simple requests. After this i changed the default root folder to /var/www and tried ...
nope's user avatar
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Mac Mini Server network connection issue

We have a Mac Mini connected to our network and are using it as our mail server which works fine. The issue is that we have a photocopier/scanner connected to the network and we can't send scan a ...
Eion's user avatar
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1 vote
1 answer
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Java Tomcat SQL 2005 connection failed

I am in a bit of strange situation when it comes to debugging this issue. I am working with a client who has a 3rd party administrate their servers, and that 3rd party does not allow for any changes ...
OrangeGrover's user avatar
1 vote
1 answer
729 views

Keep-Alive is active, where is the close coming from?

Apache server SuPHP (php as CGI?) When I look through phpinfo, I see Keep-Alive as being active/on. When I use tools like RedBot, I see Connection: Close If I set Headers (via htaccess or php) as ...
theclueless1's user avatar
3 votes
1 answer
17k views

TCP connection reset in linux(strange packet loss) but not on windows

It is all good on windows, but on linux when I try to retrieve a specific web page, I get a long wait and then a "connection reset by peer" Pinging destination IP works fine. I tried to reduce ...
Mohammad Salehe's user avatar
7 votes
4 answers
8k views

Load balancing MySQL using HAProxy: Got an error reading communication packets?

I've set up load balancing MySQL slaves using HAProxy via a xinetd. 2 load balancers shared a virtual IP that is managed by Pacemaker: crm configure show: node SVR120-27148.localdomain node SVR255-...
quanta's user avatar
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iftop Shows Lots of Mysterious Connections - Not Showing in netstat

I've just stopped all pretty much all services except sshd on my server (Ubuntu Server 10.04), and when I run iftop I get output that looks like this: 12.5Kb 25.0Kb ...
HOLOGRAPHICpizza's user avatar
-3 votes
1 answer
4k views

Connect to server via SSH2 [closed]

I'm using http://www.hetzner.de/en/. They send me something like that: Your Hetzner-Server is now active. Thank you for choosing Hetzner Online as your Web Hosting partner. You can access your ...
SaulTigh's user avatar
0 votes
1 answer
184 views

PCs losing connection to server

I'm going to try my best to describe the problem since I'm not the SysAdmin! At my office, we have multiple PCs who connect to a Microsoft Server 2003 - Entreprise Edition. We didn't do any ...
Ebpo's user avatar
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Mysql too many connections but not visible in fullprocess list

I got a big problem, I guess it's something like a dos attack but I am not sure. Since this morning, my database is very slow and gives me 7/10 times a too many connections error or tries to login ...
user968898's user avatar
3 votes
1 answer
2k views

Out of nowhere, ssh_exchange_identification: Connection closed by remote hot me too

See similar: Out of nowhere, ssh_exchange_identification: Connection closed by remote host Today, 6/19/12 attempting to ssh to the same host as usual ssh replied ssh_exchange_identification: ...
dgerman's user avatar
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Increase Openfire connection pool - maximum connections

I have Openfire 3.7.1 install on Linux (RHEL). How I could increase maximum connections? Current values: Maximum Connections: 25
Eazy's user avatar
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Postfix Send Error: Must Issue STARTTLS command

Running Ubuntu 12.04 and trying to configure postfix to relay send and receive through GMAIL. Am running into connection issues particularly with TLS. Have tried a bunch of troubleshooting solutions ...
Mary Elizabeth's user avatar
1 vote
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2k views

java.net.ConnectException: Connection timed out, Tomcat 7 and iptables

I am experiencing a weird problem.. Basically our Java developer said that in the java application the services that access the db to write on it get this error: java.net.ConnectException: ...
elect's user avatar
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VPN Network intermittantly fails to provide internet: What could be possible causes

We have a small office with our own VPN setup. We occasionally experience failures in our internet connection where we cannot access the internet. Most of the time the internet connection will resume ...
sazr's user avatar
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2 answers
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Connection closed by IP ( Linux Redhat) while ssh to Amazon server

I am accessing my server on Amazon AWS via ssh and suddenly its no more accessible via ssh. I am getting " Connection closed by 'Live IP Address of Server' " error. I think there are too many ...
Toqeer's user avatar
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apache returning "The connection was reset"

One of my dedicated servers had some network issue today and the data center has to replace some router. Since then the sites on that server returns "The connection was reset" error most of the time. ...
usjes's user avatar
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2 votes
2 answers
28k views

sftp concurrent connection

I have to setup my server to receive 20-30 concurrent sftp connections from different clients using same username. I've tried to test this simulation user connections with scp. The problem is that ...
John's user avatar
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3 votes
1 answer
4k views

Unclosed TCP connections in CLOSE_WAIT for various processes

I have cluster of several machines connected on 10GBE network (NICs are Intel 82599EB 10GBE SFI/SFP+) running under Debian 6.0 and faced with problem of hung up TCP connections in CLOSE_WAIT state. I ...
anglerhood's user avatar
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1 answer
1k views

ssh connection refused with out iptables rulles

I changed the ssh port from 22 to 2021 and it worked correctly till 3hours ago,after that when I can't connect to ssh. ssh: connect to host 130.185.72.125 port 2021: Connection refused so I checked ...
Moein Hosseini's user avatar
1 vote
1 answer
32 views

Server "connection" implication in a web page load

I'm talking with a "tech guy" and he's asserting that: if a user open a web page (for example www.mysite.com/mywebpage.php) and leaves the browser open, the connection with the server remains open ...
AldoB's user avatar
  • 133
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2 answers
671 views

Can't reach remote desktop anymore with RDC

We have a 2 backup machines that we use to manage via Remote Dektop Connection; Suddenly one of them can not be reached anymore by RDC. The other one is still accessible. I can ping the first one, ...
zrz's user avatar
  • 253
11 votes
3 answers
48k views

RDP fakeout when connectiong: does nothing, no error

Using windows RDP, I'm trying to connect to a remote machine to which I connected fine moments earlier. I had to reboot the server... Now, I type in my credentials and it looks like its working (the ...
FlavorScape's user avatar
0 votes
3 answers
12k views

Cannot login SQL Server after changing machine name

After installing and setting up new machines in a domain, we decided to rename one of them which had a SQL Server instance installed. So I changed the hostname, everything went fine regarding the ...
Ucodia's user avatar
  • 89
3 votes
2 answers
7k views

IIS Connection String not being inherited

I have an issue where I've set up a connection string at the Machine level in IIS, and it is inherited all the way down as expected... EXCEPT for the application I want to use the string in. Other ...
TastyPorkChop's user avatar
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1 answer
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connection hanging

I'm trying to get to the bottom of a connection problem. My payment processor uses port 4330 and has no firewall for incoming connections. My hosting company blocks this port by default but has ...
charliefarley321's user avatar
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476 views

Why does the connection break when I kill a process on remote host?

I login to the remote host (debian) by ssh and execute a command like this ssh user@remote_host "ps -ef | grep process_name | grep -v grep | awk {'print $2'} | xargs kill -9' then the connection ...
user avatar
-4 votes
1 answer
85 views

What type of connection to get for a web server [closed]

I've been doing some research about this topic but I had no luck finding my answer. Will a 2Mbps G.SHDSL connection do the work or should I go with a 5/10/20Mbps Metro Ethernet connection? Or am I in ...
Resul Alkan's user avatar
0 votes
1 answer
665 views

sql server 2008 r2 can connect with connection manager but noway else

I have installed (3 times on 3 machines) sql server 2008 r2 can connect with connection manager but other program cannot connect. I can connect to remote sql servers with heidisql or with my ...
JJvP's user avatar
  • 1
0 votes
2 answers
2k views

Windows Server 2008 dropping connections [closed]

Possible quite similar to this post but I wonder if someone can help me with this issue. Home Server specs: Windows Server 2008 Standard (Non-R2) 2 NICs, external one(Realtek) has a firewall on it. ...
Fooneen's user avatar
1 vote
1 answer
2k views

netstat reports ESTABLISHED connection even after I've pulled the cord

I'm experimenting with lost connections between my java application and my mysql server. The application and the server are on two different machines and I'm pulling the physical cord between the ...
Andreas Wederbrand's user avatar
1 vote
1 answer
1k views

MySQL connection issue with error 2003 / 111

I'm running a mysql server using the following command: mysqld --no-defaults --user=root --port=3310 --bind-address=0.0.0.0 --skip-grant-tables & My understanding is that this command starts up ...
Kowshik's user avatar
  • 111
0 votes
1 answer
199 views

Windows Server 2008 r2 Server VPS: every connection capped at 500kb/s

I have a strange problem on a Windows Server 2008 r2 Server based VPS. My provider gives me unmetered and unlimited bandwidth, and obviously full root access (I administer the machine via RDP without ...
opoloko's user avatar
  • 101
1 vote
1 answer
184 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: http://workaround.org/ispmail/...
thonixx's user avatar
  • 221
5 votes
4 answers
921 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 ...
nils's user avatar
  • 161
0 votes
2 answers
2k 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 ...
martin's user avatar
  • 83
1 vote
1 answer
112 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, ...
ra00l's user avatar
  • 113
-1 votes
1 answer
733 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: ...
Wick's user avatar
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1 vote
2 answers
1k 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 ...
gtan's user avatar
  • 23
1 vote
1 answer
4k 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 ...
dkeeshin's user avatar
-2 votes
1 answer
485 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 ...
user1292364's user avatar
1 vote
2 answers
1k views

suggest a tool similar to tcpview [closed]

Can anyone suggest a tool for Windows similar to Sysinternals' tcpview which monitor current all connections and also counts and shows traffic/speed?
Dada's user avatar
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6 votes
1 answer
14k 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. ...
Mark S. Rasmussen's user avatar
1 vote
3 answers
7k 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 ...
Tony's user avatar
  • 11
0 votes
3 answers
3k views

Ping host computer from installed Ubuntu on virtual box [closed]

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 don'...
Mohammad Bagher Saberi's user avatar
0 votes
2 answers
2k 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 ...
IcySnow's user avatar
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