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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5
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3answers
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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
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1answer
1k views

very slow connection to ssh server from client (but not other servers)

I have an Ubuntu 12.04 laptop that is taking so long to connect to various servers (in different data centres) that it seems like a bit of a lottery whether I'll actually get a connection. If I ...
0
votes
1answer
98 views

Link rate between EMC DAE and HBA

I have a EMC DAE (KTN-STL4) drive cage directly connecconnected to a HP Proliant server using a QLogic QLE2560 HBA. I'm using copper cable between the HBA card and the DAE. On the controller card in ...
-1
votes
0answers
21 views

connection via ip fails but can be established using hostname

I cannot reach the Server using the IP-Adress, but if I use the FQDN or the hostname itself, the connection can be established. The connection should be established by the ...
0
votes
0answers
20 views

mod_jk losing connection with tomcat

I'm running an Apache tomcat + mod_jk 1.2.40 behind an apache web server. Everything has been setup and works properly for some amount of time since a tomcat startup (measurable in days/weeks); then ...
-3
votes
1answer
38 views

Idrac 6 internet settings enabled to connect to internet via ssh [closed]

I just installed the idrac 6 enterprise into dell r410. I insert the cable on it. But there is no connection. Green light on !! Normally when i restart the server and when I use the normal connection ...
7
votes
7answers
20k views

ssh tunnel refusing connections with “channel 2: open failed”

All of a sudden (read: without changing any parameters) my netbsd virtualmachine started acting oddly. The symptoms concern ssh tunneling. From my laptop I launch: $ ssh -L 7000:localhost:7000 ...
0
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1answer
61 views

Is ARP Connection oriented or connectionless?

Is ARP Connection oriented or connectionless? It uses TCP, but does that consider it connection oriented?
3
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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
1answer
3k views

Able to connect by SSH, but not x2go

I am having trouble connecting to a remote server with X2GO using a DSA key. Connecting works fine over SSH, but when I try to connect with X2GO, it goes immediately to the username/password box and ...
3
votes
3answers
1k views

Intermittent MySQL connection errors

I have been recently getting these errors on my server: mysql_connect() [function.mysql-connect ]: Can't connect to MySQL server on 'xxx.xxx.xxx.xxx' (4) I don't think this is a credentials ...
1
vote
2answers
1k views

MySQL connecting issue with Zend App

I've set up a VirtualHost on my local machine (Windows XP with XAMP installed) and installed Zend there as well, now I'm trying to connect to the MySQL database and I get the following error message: ...
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? ...
0
votes
1answer
39 views

Named failed due to permissions and connect fail error

I'm facing a serious problem which has knocked out my server. For some unknown reason, named is no longer working, despite doing my best to remediation the issues found on the logs. I get this error ...
-1
votes
0answers
7 views

Short-circuited ethernet wiring? Cable tester loop [migrated]

Ethernet at the place I rent was dead, and since I noticed the wire was terminated in "reverse" 568 B standard, I bought crimper and cable tester to fix it. However, there is still NO connection ...
0
votes
2answers
352 views

No Ping/Telnet connection between VM

I am new in Azure and have one problem which I can not solve. I tried asking on StackOverflow, but - quoting - "You will have better luck asking on ServerFault". I want several Virtual Machines to ...
0
votes
1answer
102 views

NSClient++ traffic dropped only for external IP traffic

I am trying to use NSClient++/Icinga to monitor our Windows server boxes at remote locations. I have tested the NSClient on our internal network (192.168.1.*) and it works as expected with the server ...
3
votes
0answers
104 views

TCP connection stuck in SYN_RECV state despite ACK received

My client and server are both internal machines. tcpdump on both client and server show all three parts of handshake are communicated, however netstat on server shows SYN_RECV, and on client shows ...
1
vote
1answer
55 views

windows 8 taking long time to open Mac server share [closed]

I have a machine running windows 8 on a Mac server environment. When mounting or accessing a small/empty shared folder on the network the computer connects fine. When accessing another shared folder ...
0
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0answers
37 views

jboss 7 connection to database vip fail

Jboss 7 is connecting to HA database with VIP. When master db fails, the HA kicks in and slave db takes over as master. Querying directly the new master db works fine. However, at Jboss level, the ...
1
vote
0answers
57 views

Amazon AWS connection issues

I have a strange issue with my Amazon EC2 instance. I have created the following: m3.medium instance hosted in the Amazon cloud This instance runs the following a. Apache Tomcat application server ...
0
votes
1answer
30 views

Task Manager shows more worker processes than the max set [closed]

I am doing application pooling for a web application used by huge number of users and set web garden with a max of 20 worker processes. But in task manager, I see more processes than the w3wp ...
1
vote
1answer
281 views

Which Windows remote connections bypass LSA? What is the definition of a login vs. logon session?

Having been downvoted 4 times for answering in Has windows XP support multiple remote login session (RDP) at a time? that Windows XP supports multiple remote login sessions (the question did not ...
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votes
1answer
43 views

Can I use an external IP to make 2 internal IP's establish a TCP/UDP connection? [closed]

As I understood, in order to make a connection to an internal IP (behind NAT), the computer behind the internal IP have to send the request first before the other side will be able to answer it, So if ...
1
vote
2answers
122 views

Test port reachability from a remote host even though the port is not bound to a service?

I need to check whether a remote host is able to reach a specific port. At the time of test the service bound to that port will be down. The possible issues that the test would address would be : ...
-3
votes
1answer
29 views

I have a IP address with some open services. How could I contact the owner? [closed]

After having serious problems (DNS incident) I found out an IP address of a machine. Is it in any way possible to contact the owner without knowing anything else like email, domain name or website? I ...
3
votes
8answers
5k views

SQL Server 08 Express error when connecting to localhost - “Timeout expired”. Works with ::1 or 127.0.0.1

EDIT New info: Navigating to localhost:1434 in Chrome gives me an "ERR_EMPTY_RESPONSE", while other ports give me an "Oops! This link appears to be broken". So it seems to binding ok there? So ...
0
votes
0answers
44 views

Cannot connect to TCP service from remote host

I have two servers running RHEL 5.8. SRV1 (10.58.192.36) has a service running on port 9002 and I need to connect to this service from SRV2 (10.58.192.42). [root@SRV1 ~]# netstat -anp | grep 9002 tcp ...
0
votes
0answers
57 views

Connectivity issues (slow response) to a remote VM via SSH

I am on a linux machine trying to Ssh into a remote Centos 6.4 server via VPN. The server often gets disconnected and response too is slow. I see the messages on the terminal once in a while: ...
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
1answer
73 views

Mysterious Upstream Client ::ffff:81.70.140.65…changes on each error

I read the following post: nginx errors recv failed 104 ...but have a different question... I'm curious to know why there is ANY reference to this mysterious upstream source: ::ffff:81.70.140.65 ...
1
vote
2answers
3k views

Cannot connect to Redis installed on VirtualBox running Ubuntu from Windows 7

I've setup an Ubuntu image on VirtualBox on a Windows 7 host. On the Ubuntu guest I've installed Redis which runs on port 6379 (TCP) by default. I've setup port forwarding using the VirtualBox GUI ...
0
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0answers
7 views

Connect to Cube without using Windows account

Is it possible to connect to OLAP Cube (SQL Server) without using Windows account. Currently, I need to be on the same domain in order to connect to a cube. Are there any other solutions?
0
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0answers
564 views

ssh_exchange_identification: read: Operation timed out

I am trying to connect to my server (Synology DS212) using ssh xxx@yyy -p 22222 -vvv but I can't and I obtain the following error: OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading ...
0
votes
0answers
182 views

OpenVPN - Http proxy - connection reset

I am dealing with a problem in OpenVPN (I think so) and maybe someone can help to sort it out. I am connecting to the internet through a HTTP proxy server (10.0.0.1:8080). As I set manual ...
0
votes
2answers
565 views

Number of SSH connections rises, and blocks data?

We have a client server setup, where the client sets up an SSH tunnel and uses port forwarding to send data to the server: ssh -N -L 5000:localhost:5500 user@serveraddress The normal number of SSH ...
1
vote
1answer
66 views

How Do I Limit the Number of Simultaneous Connections to a Network Share?

Is there some mechanism to actively refuse connections to a network share in a Windows domain environment by using some predefined conditions on the server that hosts the share (if possible)? Let's ...
1
vote
2answers
214 views

Haproxy backend servers on different interfaces

I have a haproxy server which gets limited to some 60k connections. I think it is because of ephemeral port limit as I have 1:1 connection mapping, so all my outgoing connections go to the same ...
0
votes
0answers
202 views

Connection Reset by Peer error with Apache and JBoss 7.1.1

We are seeing errors on some of our QA testing scripts that intermittently throw Connection Reset By Peer errors. The Test scripts submit requests via F5 which forwards requests to Apache (2.2.21) ...
-1
votes
1answer
40 views

Can bad DNS replication cause a user to loose connectivity to a shared drive [closed]

We have multiple users that loose connections to shared drives on a particular server. I am able to ping the server hosting the files but can not see the host, or directories. Also its not 1 user, its ...
0
votes
2answers
151 views

Cant ssh to my public ip [duplicate]

I have been able to log on to my dev box (which is in my home network) for a while now, using ssh username@publicip however recently this has become impossible due to the following error ...
0
votes
1answer
61 views

Sometimes my http server does not respond and I see errors like connection reset or timout

Here is the graph from munin that might help and also here is my http.conf: <IfModule prefork.c> StartServers 8 MinSpareServers 5 MaxSpareServers 40 ServerLimit 2048 ...
-2
votes
1answer
34 views

Users unable to connect due to an unknown plausible reason [closed]

========================= Warning: Long thread; includes a lot of information to give you some basic understanding of my issues. If you rather not read it, then here are my questions: 1) Does Linux ...
2
votes
2answers
80 views

Linux Centos 6 becomes unavailable from time to time - OS&network issue

I am encountering following problem. There is one server (DL160 G5) running Centos 6.3 with default kernel 2.6.32-220.2.1.el6.x86_64 - at this point I'd like to add that issue appeared also at older ...
-1
votes
1answer
283 views

Unable to use Remote Desktop connect to Windows server 2003 by Terminal Services

I have a system composed with few windows servers 2003 R2, one is built as the domain controller another one as a web server. I tried to remotely log on the domain controller with a wyse thin client ...
0
votes
0answers
38 views

Why is my server so slow to accept connections?

I've noticed that my server seems to be very slow to accept connections - i.e. when analyzing the load time using the Chrome event map, it shows that some tasks can spend multiple seconds waiting for ...
3
votes
6answers
26k views

SQL - an error occurred during the pre-login handshake

Until yesterday evening, I was able to connect to my server from my local machine. Now, I get the following error: A connection was successfully established with the server, but then an error ...
0
votes
0answers
62 views

Network Issues Connection to SQL database on MS server

Prior to asking this question, I followed this thread: Cannot telnet to SQL Server on port 1433 I am attempting to connect to a database on a server distinct from the computer upon which I am ...
0
votes
2answers
2k views

Windows Server 2008 occasional connection drops troubleshooting

I'm seeing occasional (2 or 3 times/day) "connection drops" on a Windows Server 2008 R2 physical server, running on a Dell R710. I use the term "connection drops" because I don't know how to describe ...
2
votes
3answers
1k views

In Apache, is there a way to limit the number of new connections per second/hour/day?

To clarify, I do not wish to limit the number of simultaneous connections, nor do I want to limit the number of HTTP requests. I only want to limit the number of NEW connections per IP. I want to do ...