A connection generally refers to a TCP/IP connection, that is established as the result of the handshake between 2 hosts.

learn more… | top users | synonyms

0
votes
0answers
12 views

Motorola WT41N0 not connecting to internet

for some reason one of our handhelds won't establish a steady connection. We are using Fusion version X_2.02.0.0.016R and the handheld is using Windows 7.00.2824. I have the same exact settings on ...
0
votes
1answer
42 views

AWS connect to private subnet instance without going through NAT

First of all, I know this is not something you should always do but for now It would save many hours if it were in fact possible. I am able to do the following: ssh (with .pem) -> NAT -> ssh ...
2
votes
1answer
22 views

How to verify that a firewall closes inactive connections?

How can I verify that a firewall closes connections on port X to a server after N minutes of inactivity? Background: I am working on a Java EE application deployed to a Glassfish application server. ...
-5
votes
2answers
52 views

Best ways to establish connectivity at each layer of OSI model

We all know that ping is the most common way to establish layer 3 connectivity. Layer 1 connectivity is established by link light. Layer 2 connectivity is establish by checking if link protocol ...
-1
votes
2answers
45 views

“Software caused connection abort” after removing rule in iptables

I use Putty to connect to a Linux Red Hat machine on an AWS instance. My local computer is Windows 8. On the iptables I had to make a change and accidentally forgot to put back this default rule: -A ...
0
votes
1answer
21 views

Max connection on a specific Application

I've an application ( that contain some Web Services ) deployed on a Server in a WAS 7 environement. That server host a many application; what I'm looking for is a way to limit the number of ...
1
vote
0answers
26 views

Microsoft Azure and Glassfish

I am having a problem with Azure database and glassfish. Azure database is closing the connection with glassfish pool after 2 minutes. I found the solution but I am having a hard time implementing it, ...
-1
votes
0answers
3 views

Connecting from android device to webserver [migrated]

Given I have the following setup: Windows 8 PC with IP 192.168.178.67 On it runs a vagrant Homestead environment with IP 192.168.10.10 On my windows machine my hostfile is configured like so: ...
0
votes
1answer
52 views

Too many open connections [duplicate]

I have a dedicated server with 32GB RAM. It works all fine till some punters came to ddos my server. I had really high uplink bandwidth usage (over 150Mbps). I looked at netstat with the following ...
1
vote
2answers
25 views

Keeping TCP connections alive to track which clients are online

I am developing an application where a server needs to stay in touch with lots of simple IoT devices. Nearly no information exchange is needed between the server and each device, but devices need to ...
0
votes
0answers
33 views

Inconsistency in TCP and HTTP connection management

I observe following scenario in WireShark: The problem I see here is that after receiving [FIN, ACK] from server (4090) and acknowledging it (4092), http client attempts to send another HTTP ...
0
votes
1answer
15 views

Is there a way to know the duration for which the connection is open using lsof?

If not possible with lsof what other way to find the time for which the connection is open on a machine. Please do let me know if you need any other information.
0
votes
1answer
42 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 ...
0
votes
1answer
25 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
votes
0answers
57 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
votes
1answer
41 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 ...
0
votes
0answers
25 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 ...
-1
votes
4answers
89 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 ...
0
votes
0answers
38 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: ...
0
votes
0answers
16 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 ...
1
vote
0answers
87 views

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

ORIGINAL QUESTION: 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 ...
1
vote
2answers
52 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
64 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 ...
-3
votes
1answer
136 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 ...
1
vote
4answers
104 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 ...
1
vote
4answers
77 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 ...
-1
votes
1answer
21 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 ...
0
votes
0answers
174 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 ...
0
votes
0answers
96 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
votes
1answer
102 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 ...
0
votes
1answer
86 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 ...
0
votes
1answer
667 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 ...
1
vote
0answers
73 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
votes
1answer
28 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
52 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 ...
54
votes
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
votes
3answers
679 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
vote
1answer
140 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
97 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
2answers
101 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? ...
0
votes
4answers
528 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 ...
2
votes
1answer
958 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
votes
0answers
79 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 ...
-1
votes
2answers
163 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 ...
0
votes
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
vote
1answer
35 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 ...
0
votes
1answer
55 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
votes
1answer
56 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 ...
1
vote
0answers
49 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
1answer
111 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 ...