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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11 views

How can I acces my raspberry pi server from outside my network? [migrated]

I've got a Raspberry Pi set up as a server. I can acces it with 192.168.1.2, because i'm in the same network. Now I would like to be able to acces my Pi from outside my network (eg school). I want to ...
0
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1answer
68 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 ...
3
votes
1answer
57 views

BGINFO with MySQL for storing computer information

We are trying to set up BGinfo to record network computers' information in a centralized database. We intend to set up BGinfo to start up for all users and record logon and logoff time plus setting up ...
0
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0answers
10 views

Slow download speed with Windows-based http server? [migrated]

I've set a Windows 7-running computer with HFS (http://www.rejetto.com/hfs/) in order for me to access some of my files through the internet. The machine in question is connected via 100 Mbits/s line ...
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0answers
11 views

Puma HTTP server stats

I use puma.io HTTP server and I use server events (SSE, EventSource) for live updates. How can I display: the number of opened HTTP connections the number of SSE connections the number of puma ...
0
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0answers
4 views

Qnap NAS FTP server connection timeout when trying to transfer file [migrated]

I just got a new ASUS router and am having trouble with the FTP service on my Qnap NAS, that had previously been working great on the old router. I can connect to the FTP on the internet-facing IP ...
0
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1answer
33 views

Connecting two routers via serial

I'm new to Cisco and I wanted to connect two routers with serial connection. This is how my network looks now: Maybe I connected them wrong because when I try to ping from PC0 to either PC2 or PC3 ...
0
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1answer
51 views

Single computer cannot access servers

We have several servers running on our internal network. Our router's firewall has a redirect in place for some domains to these servers' ip addresses. This works nicely. However, we've run into a ...
0
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0answers
19 views

Connection is not persistent when using EVDO data card

I use a BSNL EVDO wireless data card. So, with this I cannot get my connection persistent i.e I cannot load Facebook, Gmail or Google search properly. If I enter a word and hit enter in Google search ...
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1answer
20 views

Only allow a specific client to talk to a server

I have the following situation: have a server (ubuntu) running an application. I have a client (only the one client) requesting stuff from that server. To execute the requests, the client has to ...
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1answer
38 views

wget ftp connection failing after PASV command

In attempting to transfer all files from one web server ("source") to another ("destination"), the wget command is connecting via FTP, but cannnot proceed beyond the PASV command. I'm using an SSH ...
2
votes
4answers
65 views

Progressive video download in a classroom environment - how to determine bandwidth needed

Background: We need to deliver a video heavy e-learning course to a classroom of ~15 users. This video will be MP4 delivered via HTML5 video so progressive download. As from what I can gather you ...
0
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2answers
59 views

Connecting VoIP Phones to a Laptop

I'm trying to connect two VoIP phones to a laptop using the internal ethernet adapter and a usb-to-ethernet adapter. My configurations are as follows: Laptop eth0 - 121.1.2.1/24 Gateway - 121.1.2.4 ...
5
votes
6answers
355 views

How can I find the total number of TCP connections for a given port and period of time by IP?

On a Linux system there are plenty of methods for listing the current TCP connections for a given port by connecting IP but: how can I count the total number of connections to a port per source IP for ...
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votes
2answers
53 views

Hosting medium sized files - do I need a 1000mbps connection? [duplicate]

I am planning on setting up a free file hosting site where users can host files up to 1GB. I was looking at some dedicated server hosts and found one in the Netherlands that offers 50TB bandwidth per ...
5
votes
1answer
67 views

Odd TCP termination sequence

While troubleshooting another thing, I've noticed an odd pattern of TCP closes. Packets: http://www.cloudshark.org/captures/7590ec4e6bef What's happening is that the last few packets of the close ...
0
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0answers
83 views

Why would a client send a RST packet as reply to a SYN,ACK?

I have a HTTP webservice where sometimes the connection setup fails in a strange way: client sends a SYN packet server sends a SYN,ACK reply client responds with RST In which situations could a ...
0
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1answer
44 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 ...
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1answer
49 views

How do I know that my TCP connection is safe from the Firewalls/NAT?

Being on the Azure cloud, I found that the firewalls there drop connections between the Web server and the database quite often. Mostly when there was some inactivity, I think something between 5 and ...
0
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0answers
19 views

Remove hosts from Hyper-v virtual machine connection list

When using the Hyper-V Virtual machine connection program to connect to a VM on another host, you can type the name/IP of the host in the first drop down, and then the second dropdown populates with ...
0
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1answer
55 views

postfix deliveries per connection

hope you can assist me in this case. I am administrating an Postfix server which is used for newsletters. Recently one of the major recipient domains changed their policies to only accept one email ...
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1answer
20 views

How to allow remote connection to MySQL only for specific accounts in CentOS VPS?

I have a CentOS VPS. Port #3306 for MySQL is open for all customers, and they can connect to their databases remotely. As this can be a cause of security issues, I would like to stop all remote ...
2
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2answers
65 views

Cisco Switch went mad

tI have a Cisco SLM2048 Smart Switch which I can't access anymore. The switch is working just fine but: I can't reach it by web interface Doesn't seem to be able to reset it, even if I hold reset ...
0
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1answer
21 views

Show statistics for ssh connection

I am suffering since a long time an ssh timeout with one of my hosts. I have tried several things, including changing ClientAliveInterval and ServerAliveInterval, but I do not get it to work. I would ...
0
votes
1answer
40 views

Is weblogic 10.3.6 data source connection pool maximum capacity per domain or server?

My WLS server is connecting to an Oracle DB that has a maximum concurrent connection limit of 3. I have created a data source in WebLogic and set the "Maximum Capacity" value to 3. Is this value ...
0
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0answers
48 views

Establish an SSH Tunnel out from behind a firewall

I have a box sat behind a firewall, and when its powered on (or internet connection resumed), I want it to connect to a server, allowing me to do a reverse SSH connection back to it. I'm currently ...
1
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1answer
33 views

How to profile which SQL server a .NET application tries to connect

We have a huge .NET application from 3rd party that would be time consuming to disassemble and understand the code. It is compiled in Release mode. Connection strings to the MS SQL databases are ...
3
votes
2answers
95 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 ...
1
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2answers
56 views

Connecting SAS drives to Server which supports only SATA

Is there any adapter or connector available to connect a SAS drive to a Server having motherboard which supports only SATA drives. It is ok if can connect it for temporary. I need to transfer some ...
0
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2answers
58 views

MySQL connection errors when client server bandwidth is exhausted

I have several servers with a lot of outgoing traffic using nginx. When the bandwidth is exhausted (1Gbit), I have problems connecting to my mysql server from those servers. The connect always fails ...
1
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2answers
48 views

Linux: Find amount of “active” connections on one port

i need to monitor how many users are actively connected to one port on debian. I know i can do it with command netstat -na |grep $port |grep ESTABLISHED |wc -l which really gives me result - a ...
0
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1answer
34 views

What packet to ignore to not have ssh terminated on brief connectivity loss?

It seems like sometimes there are some connectivity problems around the edge of our network to certain other networks, and my ssh sessions with some remote servers, which themselves have no ...
0
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0answers
56 views

ORACLE keep-alives with ENABLE=BROKEN with ezconnect

Could you please advise is there any way to use ENABLE=BROKEN option with ezconnect? Usualy this option provided in tnsnames, but in case of ezconnect, tnsnames will not be used and option will not be ...
1
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2answers
66 views

SSH connection times out unless I tunnel in from a different server-

OK, so this just started last week - Whenever we try to connect to our server via ssh (we use sftp, as well) - The connection times out. However, when you ssh to any other server and then ssh ...
0
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1answer
136 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
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0answers
129 views

Django + Apache WSGI + pscopg2 + PostgreSQL 9.1 unexpected EOF on client connection

There are two servers I have. One is SQL server, other is Django project server. And sometimes I get too many unexpected EOF on client connection error by postgresql and OperationalError: could not ...
1
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2answers
41 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
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0answers
166 views

Apache2 mod_proxy_fcgi closes a connection after each request

I set up mod_proxy_fcgi do go with apache and php-fpm. If I read the FCGI spec correctly, the typical flow for the communication between a server is to keep the connections between the web server and ...
0
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1answer
58 views

'Proxy' a connection

I'm developing an application A that connects to remote server S on some port (>1024). For security reasons the server S only allows connections from a specific machine I with a white-listen ...
0
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0answers
17 views

Acceptable time interval before attempting to reset a connection?

I am writing an application for a router which simply connects it to a VPN. If for some reason the connection fails, the application will attempt to acquire a new socket and reset the connection. My ...
0
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0answers
341 views

VmWare Host connection keeps on breaking

I have installed VMware ESXi 5.1 and configured the static IP. When I try to connect to the host using the vSphere Client it logs in sucessfully. But after that when I try to access any thing I get ...
0
votes
0answers
39 views

iMac L2TP connection fail

When trying to connect to private business L2TP server, Mac OSx disconnects. Console log ( ip address is masked x.x.x.x ): 9/8/13 9:58:00.734 PM pppd[11473]: L2TP connecting to server 'x.x.x.x' ...
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1answer
349 views

ssh connection closed immediately after logging successfully

Environnement is Mac OS trying to connect a Debian 6 server. debug2: shell request accepted on channel 0 Linux ns******.ovh.net 3.10.9-xxxx-grs-ipv6-64 #1 SMP Wed Aug 21 11:51:59 CEST 2013 x86_64 ...
0
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0answers
146 views

ubuntu create vpn connection

Ubuntu 13.04 Trying to connect to VPN with having IP, username and password. In Windows vpn connection does work. Thanks in advance. /etc/ppp/options.pptp lock noauth nobsdcomp nodeflate persist ...
0
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3answers
209 views

How to to avoid “Port 22: Connection refused” error?

I have a server where I just use openssh, openvpn and rabbitmq (which requires a lot of erlang dependencies). Every time I reboot my server I can't access to it anymore getting Port 22: ...
1
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0answers
442 views

SQL Server 2008 R2 Express connection error

Hi I'm having issues with SQL connection for a client PC We have software that uses SQL database, and I have just updated from SQL2005 to SQL2008 We have 5 pcs: 2 x vista (32 bit) 2 x win7 (64bit) ...
0
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0answers
38 views

Apache process 100% with IPV4 TCP 10u

Today i got strange http ussage. All apache processes woks ok but after some time i found few processes stocked at 100% and they are like that long time. After i checked that process id at webmin ...
0
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1answer
63 views

How do I add a MySQL super user with root-like permissions?

Using PhpMyAdmin on XAMPP, I want to add a super user that has the same privileges as 'root'@'localhost'. This is because I want to create a MySQL instance that my local machine will serve as a ...
0
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1answer
182 views

Router drops connection

We are having trouble with our Draytek router, and I thought this would be the best place to ask. Our current set-up: Cisco EPC3925 modem to our connection point Draytek Vigor2850 router connected ...
0
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1answer
801 views

Connecting to MySQL & MS-SQL yields “Access denied for user” error message

I am trying to connect to both of my database servers, however when using some interfaces (web and some apps), I get the error message: Connection cannot be established with database. Authentication ...