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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1answer
21 views

How can I see the whole connection history? (for beginner) [on hold]

I am not absolute beginner, but I am not true programmer either. The pieces of code I had seen there says nothing to me. :/ Now, there is the problem: One of my computers is small netbook lenovo. It ...
0
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1answer
23 views

Zabbix Cannot Get Value From Agent

I am attempting to connect Zabbix to a host and am getting the error: Get value from agent failed: cannot connect to [[xxx.xxx.xxx.xxx]:10050]: [4] Interrupted system call I am not sure why this ...
0
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1answer
4k 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 ...
0
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0answers
22 views

What happens if a machine gets a SYN/ACK packet without sending initial SYN packet?

I'm thinking of a situation where an attacker manipulates a SYN packet that was sent from A's source IP address to B. The server will receive the packet and think it's a legitimate packet, and send a ...
0
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1answer
3k 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 ...
52
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5answers
7k views

I accidentaly forbid SSH connection to a remote server… What's next?

Let's say it again, we all make mistakes, and I have just made one. A brief history: I was doing some stuff on a VPS (Debian) I'm renting, when I noticed some strange behaviour. Using the netstat ...
0
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1answer
12 views

Concurrent connections per IP

I need to make a few changes to a firewall configuration, but before I do I'd like to see the number of concurrent Apache connections per IP. This command produces a nice list: #netstat -ntu | awk ...
-1
votes
1answer
19 views

IPv6 connections from outside the LAN are timing out; what is blocking the connection?

as I understand with ipv6 there is no NAT so every client on a network will get a different public ip address (so there is no need for port forwarding). so I checked on my network and indeed every ...
0
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3answers
94 views

Can't connect computer to domain [closed]

I can not connect a computer to Server 2012 R2. the error message I receive is Note: This information is intended for a network administrator. If you are not your network's administrator, notify the ...
1
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2answers
672 views

Google DNS is too slow connecting to Google APIs

I have a linux server in Germany. The server is configured with Google DNS. When I call from the server some Google API, the connection is too slow, it takes always 2 or 3 seconds to connect to the ...
1
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3answers
1k views

How to work with batch script dialog?

I am working on a batch script to remap a network drive in windows xp. I have found it to work out well for the most part with: net use G: /delete net use G: \\file\share However, if there are any ...
4
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1answer
7k 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
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: ...
1
vote
1answer
36 views

Ipvsadm to monitor connections on a load balancer

I am working on to set up Haproxy on a load balancer with two backend web servers in the first period. The problem I am facing is to monitor number of connections to each of my web servers. I have ...
0
votes
1answer
27 views

MySQL Bad Handshake to MySQL Cluster behind Proxy

I have just set up a MySQL cluster using five hyperV linux boxes (2x management nodes, 2 data nodes and 1 proxy) having followed (with a bit of tweaking) the instructions here. Everything works fine ...
0
votes
4answers
250 views

telnet cannot connect to port without firewall

If I try to connect to MySQL with telnet myhost.com 3306 I get a network not reachable error, even when I flush all iptables rules. I can reach other ports like ssh (with the same iptables rules ...
0
votes
2answers
64 views

Website is down but only for me

I have a website that is working fine for everyone but throws an error whenever I try and access it. The web developer is saying it is a problem with my network. What should I check to confirm this? ...
2
votes
3answers
2k views

MS Access gets Disconnected

I have MS Access 2003 application connected to SQL Server 2005 with linked tables. Starting from yesterday when I open a linked tabled and leave it open for a while (5~10 minutes) then the database ...
2
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1answer
811 views

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 ...
0
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3answers
2k views

pptp vpn - Kill User Connection

I'd like to be able to terminate a user's connection to my pptp server from the server itself without interrupting anyone else's connection. Problem is - I have no idea how and have found no useful ...
1
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0answers
123 views

Siege: descriptor table full sock.c:119: Too many open files

I am trying to make a stress test in my own server using siege with the following command: $ siege -c 500 myweb.com/somefile.php But I get this error: [error] descriptor table full sock.c:119: Too ...
0
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0answers
37 views

ProFTPD disconnect device

we are running a ProFTPd Version 1.34 on Debian Linux 7 Server. We have no problems to reach the FTP Server via Filezilla or even via Browser on mobile phones. But we have about 80 devices, that have ...
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2answers
32 views

How to avoid 'too many connection' error in MySQL

It often happens that when trying to load the data from the database i`m getting an exception 'To many connection'. I do not know the internal features of the database work, so i do not understand ...
4
votes
6answers
34k 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
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1answer
74 views

How to Access Server After Cisco AnyConnect Connected?

I have bought a VPS with Windows Server 2003 and Valid Public IP a.b.c.d In this Server I have to Connect to Another Private Network with Cisco Any Connect also I have to RUN a CCProxy (http proxy ...
3
votes
2answers
194 views

Using pconnect on several databases in PHP on Apache2

I am running PHP in preforked(MOD_PHP) on an apache2 server. The setup is on linux Ubuntu 10.04. The database I am using is a firebird database 2.5.2. The apache2 server are running in a web cluster ...
0
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0answers
1k 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
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0answers
291 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 ...
6
votes
4answers
3k 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
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0answers
6 views

Couldn't connect to MySQL remotly without skip-grant-tables option [duplicate]

I trying to connect to MySQL remotely over a Win Server 2012 EC2 instance, to do so I'd: Enabled inbound traffic to MySQL port 3306 in the EC2 Security Group; Disabled Windows Firewall service. ...
1
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1answer
28 views

How to check the bandwith that is used by each connection on Apache?

I am trying to get stats on how much of a bandwidth each connection uses on Apache? I have Apache 2.4 installed on Windows Server 2008 R2. I would like to know how many users more I can add on my ...
9
votes
3answers
15k views

Understanding this error: apr_socket_recv: Connection reset by peer (104)

So, if I do some benchmarking with apache benchmark (ab), and I use large numbers of requests. Then sometimes in the middle of a test I get this error. I don't even know what it means. So how can I ...
0
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1answer
28 views

Logging client connection errors/closed connections with apache

Is there a way to log/record apache connections which are prematurely cut off by the client (either deliberately, or due to a connection error)? Short story is this: I'm working on ...
0
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2answers
641 views

RDP fakout 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 ...
0
votes
1answer
159 views

Weblogic JDBC connection pool keeps in suspended state when DB is back to normal

We have a JDBC connection pool on a weblogic 12c. When the backend database goes to offline, the pool goes into suspended state, and when the db is back online after a short period of time (say 5 ...
3
votes
1answer
87 views

SBS 2011: can't open web-based Sharepoint Designer

We installed SBS 2011 (Sharepoint 2010) a couple of years ago and it's running fine. We never used Sharepoint features. Now we wanted to explore Workflow features so I went to http://sites and logged ...
3
votes
1answer
478 views

Unix socket connection limit

This may appear like an already discussed/answered question. But I am specifically looking for info which I couldn't find anywhere answered clearly. I have an Nginx + php-fpm setup which uses unix ...
0
votes
1answer
28 views

maximum number of clients connected to the web service [duplicate]

How can I find the maximum number of clients that can connect to my web service at the same time? Is there any way to know how many clients can connect to the web service at the same time? What is ...
0
votes
2answers
148 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 ...
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0answers
44 views

Weird proxy behaviour

I recently installed a computer in a network that is behind a proxy, I configured a reverse ssh tunnel to connect to it, and tunneled the ssh connection with corkscrew to connect to a server, this ...
3
votes
0answers
277 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 ...
0
votes
1answer
49 views

closing ssh tunnel when using connection sharing without killing ssh?

I typically use ssh with connection sharing enabled; this causes any ssh tunnels I create subsequent to the initial ssh login to use that connection. Is it possible to close an ssh tunnel without ...
0
votes
1answer
195 views

Nodejs: server doesn't close TCP connections

Facing a problem in the production server running debian (7.0) with nodejs (v0.10.x) cluster where it doesn't close some TCP connections to the clients. This leads to connection drops when connection ...
1
vote
1answer
576 views

iis app pool set credentials not working for specific network account

I am trying to set app pool credentials for a speccific domain account for an ASP.net MVC project on iis 7.5 on a Windows 7 enterprise server. I am using .Net version 4 and I believe this is set ...
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votes
1answer
171 views

device vs interface vs connection under linux with nmcli [closed]

What are dependencies and relations between device, interface and connection in nmcli cmdline utility under linux? The below questions are asked in context of nmcli and networking in linux: Which ...
-3
votes
1answer
97 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 ...
9
votes
7answers
29k 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 ...
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1answer
97 views

Is ARP Connection oriented or connectionless?

Is ARP Connection oriented or connectionless? It uses TCP, but does that consider it connection oriented?
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 ...
5
votes
1answer
2k 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? ...