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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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
12 views

AWS Bitnami Tomcat Stack: Connection refused on :8080 [on hold]

I installed KIE Server and Drools Workbench following this tutorial on an AWS EC2 instance based on a ready to use Apache Tomcat stack by Bitnami. The installation went well and so I'm able to start ...
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11 views

Way to kill http nio connections in Tomcat

We have an application that sends messages to users to access our server (Apache tomcat) through an HTTPS connection with their devices. Problem is that this users applications is keeping the ...
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1answer
9k 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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13 views

How to force persisten connection squid

How do I make a persistent connection in squid, I'm using ubuntu 12 with squid 3.1.19, this is the request I do OPTIONS http://cmsprod.imusica.com.br/index.php HTTP/1.1 and response: HTTP/1.0 200 ...
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45 views

Internet is very slow because of many unknown connections from and to some amazonaws EC2 servers, Dropbox?

We are currently having issues with the internet speed at work. We asked for a global report to our ISP in order to understand what was happening, and in their report (in the "conversation report" ...
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22 views

Port 1433 blocked to Azure SQL Server

I'm having an issue connecting to an Azure-hosted SQL Server. After much trial and error, and studying the handshake, I've determined that port 1433 is being blocked somewhere along the way. I've ...
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2answers
3k 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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6 views

method for listening for samba connections

I am setting up my RPi to handle a number of NAS server tasks. The first is to locally host my HDD data over a samba share. The second is to become a bittorrent box (with deluge). From what I ...
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28 views

Windows Server 2012R2 VPN client connects, but nothing else

I installed VPN on our 2012r2 Server. This network does not have a domain, it simply in workgroup configuration. From the VPN clients, I can connect to the VPN, but that is all. I can't ping ...
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12 views

Route between E1 devices

I have this topology and I need to configure routing between my CISCO 2911 routers to connect my devices, that are using E1 without any timeslots separation.
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1answer
10k 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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1answer
1k 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 min),...
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1answer
22 views

netstat shows inequal amount of mutual connection between two hosts

I'm trying to investigate why the amounts of connections between two physical hosts 10.240.48.9 и 10.241.169.7 (CentOS 6) don't match each other (diagnosed from the each one respectively): On 10.241....
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8 views

server error connection from another pc

I've created a PostGIS database in a computer but I can't connect to it from an another computer, the error message is connection time out, is the server accepting connections TCP/IP in port 5432? ...
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0answers
16 views

Draytek Vigor 2830n WAN connection dropouts

For the last two weeks we have been experiencing terrible connections speeds. When running a speed test it normally starts off OK at around 15Mbps but then drops to 0.7Mbs or below making working ...
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16 views

Unable to Ping over wifi [duplicate]

We have 2 PCs and 4 laptops in the office, and we use D-Link 2750U to connect to internet. All the computers can connect to the internet successfully. One thing that I noticed recently, is that PCs (...
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2answers
58 views

SQL Server Named Pipe Error

I have been trying to install SQL Server Express for a few days now. I tried 2008, 2012, and now 2014 all with the same result. I cannot connect to the database remotely, even if I turn the firewall ...
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1answer
15 views

NRPE Firewall blocking xinetd

From one side, my nagios server, IP 10.1.1.232. Here is my Nagios's xinetd's NRPE config : # default: on # description: NRPE (Nagios Remote Plugin Executor) service nrpe { flags = ...
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13 views

How to set up a “dial in” connection to a Windows 7 computer to create a local area network [duplicate]

I have a Windows 7 computer that will be offline except for a modem connection. I need to set up a "dial in" connection to an remote unattended Windows 7 computer via telephone modem to be able to ...
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29 views

Can access server via SSH/FTP but other protocols won't work

I followed this guide to setup an "Upside-Down Ternet." Everything was fine up until the part where I configured IPTABLES then I lost SSH connection. Now I expected that because I'm messing with ...
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68 views

telnet “connection closed by foreign host” for some servers, not all

I started having issues connecting to our mail server on 1 server, but the others are able to connect without issue. telnet my.smtp.server 25 Trying 1.2.3.4... Connected to my.smtp.server. Escape ...
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74 views

Connecting to a MariaDB server with master-master replication setup hangs randomly

I have a two server MariaDB master-master setup as documented on the DigitalOcean community page: https://www.digitalocean.com/community/tutorials/how-to-set-up-mysql-master-master-replication. The ...
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1answer
28 views

Cannot login to ssh - stdin: is not a tty

FIXED If you have seen this in the login screen of your server... stdin: is not a tty ...you know the trouble. Well. I've had the exact same problem on my root server. I tried several things to ...
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1answer
82 views

Samba connection reset on Windows 7 (System error 5)

I am having problems setting up a Samba server, or to be more exact the problem is that i have set up the server, but it sometimes stops working for several hours and then starts again. It is always ...
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10 views

Windows/IIS7.5 half-closing connections resulting in sockets in TIME_WAIT

I'm seeing scenarios where the client side initiates the TCP close but the webserver (IIS 7.5) simply responds with an ACK and the connection ends up in TIME_WAIT. Why would it do that? Typical HTTP ...
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163 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
1k 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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48 views

One-way connectivity on DC

I have a Windows Server 2012 R2 server as a domain controller and DNS server for the AD-integrated domain. Using the server's IP, the server can be pinged, the default IIS website can be accessed, VPN/...
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33 views

Google Cloud Messaging - server side - connection 502 error

i have problem with connection from my application server to GCM : gcm.googleapis.com:5235 Exception: XMPPError connecting to gcm.googleapis.com:5235.; : remote-server-error(502) I have exact same ...
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1answer
47 views

Apache Empty response Diognosis

My server gives empty response randomly. This is about four weeks that I cant figure out what is the problem. I will try my best to give you extensive information about my problem. sever specs: ...
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1answer
93 views

Running nginx on AWS is sending back 'ERR_CONNECTION_TIMED_OUT' responses

I have installed nginx on an Ubuntu AWS (EC2) node and confirmed it is running via ps -aef | grep nginx. In the server section I have: server { listen 8080; server_name ec2-<blah&...
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1answer
60 views

Iptables: Difference between RELATED and ESTABLISHED state?

I've tried reading many articles on the internet but none of them are quite clear. I also know similar question has been posted here before but none of them explain my situation. Earlier I ended up ...
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42 views

Ubuntu 14.04 SSH from Third Party, No Error Cause

I have two instances of Ubuntu 14.04 running. I am utilizing a third party service that accesses the instance(s) via ssh using its own generated key pair, of which it provides me the public key. I ...
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9 views

Can't connect to the IBM bladcenter switch

I got IBM 8677 bladecenter with hs21 type 8853 & 7995 I connect the Ethernet SM I\O module , configed it in the IMM to same subnet as my host. I dont know why , but I cant telnet it or ping it . ...
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2answers
43 views

IPv6 DNS Connectivity through IPv6

My clients are using IPv4 in the USA. Their ISP is not ready for IPv6 yet. My public web server is on only IPv6. It is registered with a DNS Provider(GoDaddy) that is IPv4 and IPv6 enabled. Can my ...
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28 views

nginx access log and $connection variable

!Hi, guys! I've added $connection variable to output of nginx access log and everything seemed working fine. But i've noticed that sometimes different client IP's assigned to the same connection. Up ...
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0answers
22 views

MONGO - mongod - no connection to database [duplicate]

i have an testserver running under ubuntu 14.04 with public ip address. On this i have plesk 12.5 and mongodb 3.2. For administration of mongo i installed phpmongodb. Then created an database, an ...
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1answer
51 views

SSH RDP Tunnel and Port Connection

Tried doing some research but can't really figure out the solution (or how to troubleshoot further) for this problem. Objective and Reasoning for setting this up: SSH Tunnel RDP from work to home ...
2
votes
1answer
10k 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 ...
0
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1answer
70 views

Increase Connection Timeout for “ssh: connect to host xxxxx port 22: Connection timed out”

I need to perform a sort of scan over 20k+ machines in the network (all linux), and I am using ssh to connect to each machine, run a small command on it, and gather the output. I am running parallel ...
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22 views

Does nginx consider a page request as one request or more (including static files)?

Lets say we have a configuration as below: http { limit_conn_zone $binary_remote_addr zone=conn_limit1:12m; limit_conn_zone $server_name zone=conn_limit2:24m; [...] server ...
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2answers
636 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: http:/...
0
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2answers
2k views

Connection Refused When Trying To Connect To IRCd-Hybrid

I have a Rackspace server running Ubuntu Lucid Lynx, where I have installed an IRCd-Hybrid. I can connect to the IRC server using irssi that was installed on the same machine where the server is, but ...
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1answer
100 views

Nginx Stress Test with httperf - Large Data Transfer Differences from Apache Server

I'm running a simple httperf stress test on a quad-core Nginx server, pointed at an HTML/PHP document. Large connection rates quickly begin experiencing high connection and response times (see the ...
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2answers
273 views

Backup NAS to another NAS?

is there a way to backup / transfer a NAS (it's like a big harddrive with some access to a webinterface, but closed linux etc.... only two ethernet ports) to another one? or is the only way to connect ...
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2answers
4k 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 ...
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1answer
43 views

What is the difference criterion between max_clients and max_conns? [closed]

I'm new to server administration; What are the main \ Criterial differences between max_connections and max_clients a server can handle? It can be sound very similar,
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6answers
69k 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 ...
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1answer
155 views

How to stop tinyproxy from using “Proxy-Connection” header

I just setup tinyproxy for the first time, and I'm trying to make it mimic a normal connection as closely as possible. I already disabled the Via header, but I'm not sure how to change the Proxy-...