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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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 ...
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1answer
5k 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 ...
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2answers
1k 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 ...
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0answers
21 views

Is it possible to turn PC into a router, so that I can send data to it? [closed]

I would like to transfer data to my PC a bit quicker, than I am now ( which is sending it over wi-fi through the router ), but it would seem that both USB and Ethernet creators just hate easy ...
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1answer
18 views

No internet connection via my OpenVPN server (solved)

I have OpenVPN up and running on my server. I want all traffic from my clients to be routed trough the VPN server. The client connects just fine but is unable to connect to the internet. Server ...
0
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1answer
29 views

Video Streming server outbound bandwidth and providers [closed]

Imagine the case of Twitter Periscope or Meerkat.The paradigm of their servers is that they recieve video from users and then stream it to a large amount of users (say > 100K for the sake of this ...
4
votes
1answer
8k 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. ...
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0answers
35 views

What causes the “connecting” and “waiting” for seconds on HTTP GET requests with nginx?

What causes for the delay in connecting to an Nginx server and for the Waiting time are under an admin's control? I've set up GTMetrix to run daily web page load speed tests, and sometimes I get ...
0
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1answer
29 views

How can I do site-to-site OpenVPN routing without NAT

I have two OpenVPN servers at different location. Each machine in one location can ping and connect to every machine in the other location. My problem is when I use SSH to connect from machine A in ...
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votes
4answers
72 views

MYSQL - is LOCALHOST speedy than i.e. (domain) mysql.domain.com [closed]

I am interested, on some hosting(although they are paid hostings, for example, DreamHost. probably 000webhost too), in database server, you have to insert: mysql.domain.com (instead of: localhost). I ...
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0answers
19 views

String domain on RDP file not working

I am about to flash 80 HP T620 Thin Clients (TC) which will only be used to launch an RDP file so users can connect to their virtual machines on our Hyper-V environment. In the end, the TCs will be ...
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0answers
20 views

better alternative for tcp_syncookies in linux

In an effort to prevent DDOS attacks I followed suggestions to leave /proc/sys/net/ipv4/tcp_syncookies value set to 1 in my linux box to enable TCP syncookies. However, when I look at this URL: ...
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0answers
67 views

LDAP build script failing on openLDAP-2.4.31 ( ldapmodify -Y EXTERNAL -H ldapi:/// )

I want to set the password to the backend admin so that I can change the LDAP ACL to what I need... needless to say I don't want my config posted all over the place, plus the .ldif files are correct. ...
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0answers
11 views

DLINK DCS-3716 network dropping out periodically

I have several D-Link DCS-3716 located around. Some of these are used for a live view of mechanical processes. I am connecting these cameras on a Debian host running VLC on an RTP protocol. The local ...
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0answers
13 views

Slow IIS site performance for certain network conditions

I'm trying to determine the cause certain uses are seeing on an IIS site I work with. Users started to mention this slowness to us a month or so ago and I've been trying to determine the cause of it ...
2
votes
1answer
746 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 ...
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2answers
2k views

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 ...
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1answer
135 views

How can I build connections among four OSs, especially between two Ubuntus? [closed]

More background information: Two Ubuntu 14.x systems both hosted in Windows using VMware Workstation 10: Ubuntu server in Windows 7 and Ubuntu guest in Windows 8.1. Public IP is limited, so using ...
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4answers
98 views

How to access a machine with a wrong network address?

I have a Windows Active Directory network in a LAN of addresses 192.168.10.0/24. I have another site that has addresses of 192.168.11.0/24, where all AD servers are in the 192.168.10.0/24 site (I ...
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2answers
48 views

Transparent switch from Wifi to ethernet

I have the following network setup: Zyxel USG 200 Firewall which also acts as DHCP server 2 Switches 2 Wifi APs (Zyxel NWA3560-N and WAC6503D-S) with NAT and DHCP disabled The clients (mostly ...
0
votes
1answer
54 views

NIC seems slow, even on 100Mb/s full duplex [closed]

So I have a server running Centos 6 64bit with cPanel. It's set on eth0 running at 100MB/s full duplex. But, one particular server seems sluggish on its connectivity, despite server load being minimal ...
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4answers
62 views

is it safe to change the RDP port?

My web server is in the U.S. and it is accessed from my home in Canada using Remote Desktop Connection, standard port. Unauthorized persons have tried to log in from many different countries, some ...
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votes
1answer
7k views

Specific FTP connections not able to upload files

I have installed vsftpd in a server. A new ftp group was added and a user was created and added to that group. I've tested 3 different scenarios, only 1 of them is working properly and the other 2 ...
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0answers
162 views

Rails app with nginx passenger: recv() failed (104: Connection reset by peer) while sending to client

Update. June 8 It's most definitely client-side. Something about JQuery/Ajax/Facebox doesn't sit well with IE10/11. Unfortunately updating all the components for JS related things to be more ...
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1answer
19 views

How to troubleshoot connection error from windows to unix?

Sidenote: I am still trying to fix this issue. I have a ubuntu server running bind on 192.168.0.2, listening to :53 # netstat -tulpn //output shortened tcp 0 0 192.168.0.2:53 0.0.0.0:* LISTEN ...
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0answers
83 views

Banned from SSH Centos server but can't find where

For some reason my ip address is banned from using ssh or sftp. I have no problem connecting to the server using an other ip nor i have problems reaching all other services (like http, teamspeak) with ...
0
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1answer
96 views

Too Many HTTP Requests from one source

We are having an issue at one of our customer sites where Tripwire is flagging events when more than 1000 HTTP connections are being individually created from different IP addresses within a span of ...
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3answers
2k views

how to resolve connection problem at network

i have this problem connection: Unable to complete network request to host "xx.xxx.xx.xxx". Failed to establish a connection. No route to host could not connect to DB can you tell me how to resolve ...
0
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1answer
60 views

MySql Clients connection timeout randomly

I have 100 PC clients connecting to MySQL over LAN. They're running INSERT querys with no particular period.Statistically, at the same time no more than 10 PCs are trying to run INSERT query. This is ...
3
votes
4answers
7k views

Can I merge two broadband Internet connections into one? [closed]

I would like to merge 2 identical Internet connections into one. I have two 512 connections and would like to combine them to create a single 1 M BPS connection. I hope you can help.
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1answer
409 views

Zabbix Cannot Get Value From Agent [closed]

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 ...
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0answers
62 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 ...
53
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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 ...
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1answer
26 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 ...
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votes
1answer
47 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
483 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 ...
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2answers
764 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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3answers
2k 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 ...
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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
124 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
83 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
418 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
93 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
votes
1answer
863 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 ...
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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 ...
0
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0answers
69 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
98 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 ...
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votes
6answers
42k 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
1answer
100 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 ...