0
votes
1answer
205 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 ...
5
votes
6answers
450 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 ...
0
votes
0answers
59 views

Windows Machines dropping connection to local linux site

Problem We host a website locally for employees to use to complete their work. We noticed once and a while an employee will lose connection to the local website and can not access the site anymore ...
0
votes
1answer
942 views

apr_socket_recv: Connection timed out (110)

I have nginx/php-fpm running but I am getting the following: apr_socket_recv: Connection timed out (110) This is a massive big box. 16 cores/24GB RAM What do I need to tune to increase the allowed ...
3
votes
2answers
1k views

Can not mount NFS from server on local network

I set up my NFS server without doing any bigger changes in configuration files. After that I added these entries to /etc/exports(both paths are valid) on server(192.168.1.11): /export ...
0
votes
1answer
73 views

Connecting to samba ubuntu server from linux

In these days I'm setting up a small network with about twenty computers. The users of this network used windows before (now they use linux mint) and they need to access samba ubuntu folders simply ...
2
votes
0answers
107 views

what can put linux process managing connection pool into bad state, so it restarts them continously?

I have an application with pool of connections to MySQL. At some point, in production, every 1-3 seconds some socket is closed. As a result my app restarts this connection. This is pretty big pool ...
1
vote
2answers
2k views

TCP connection stuck in SYN_RECV state despite ACK received, Linux 2.6.18, embedded, ARM

My client cannot connect to my protocol port (TCP) after some network glitches, even though all other protocols (telnet/HTTP/FTP) work fine. netstat shows that my server is listening and tcpdump on ...
5
votes
2answers
135 views

Effects of internet connection speeds on server queries

Can my internet connection significantly effect queries run on phpmyadmin? I am currently 18 down and 30 up. I switched internet connections today and noticed a deep drop in query performance. The ...
0
votes
1answer
222 views

apache local network

I am trying to reach my local Apache from another source in the local network. The IP of the machine running Apache is 192.168.2.36, the os is xubuntu 12.04. Via this machine I can reach the Apache ...
1
vote
1answer
3k views

TCP connection reset in linux(strange packet loss) but not on windows

It is all good on windows, but on linux when I try to retrieve a specific web page, I get a long wait and then a "connection reset by peer" Pinging destination IP works fine. I tried to reduce ...
1
vote
2answers
105 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 ...
0
votes
1answer
243 views

apache returning “The connection was reset”

One of my dedicated servers had some network issue today and the data center has to replace some router. Since then the sites on that server returns "The connection was reset" error most of the time. ...
0
votes
2answers
279 views

Why does the connection break when I kill a process on remote host?

I login to the remote host (debian) by ssh and execute a command like this ssh user@remote_host "ps -ef | grep process_name | grep -v grep | awk {'print $2'} | xargs kill -9' then the connection ...
1
vote
1answer
514 views

netstat reports ESTABLISHED connection even after I've pulled the cord

I'm experimenting with lost connections between my java application and my mysql server. The application and the server are on two different machines and I'm pulling the physical cord between the ...
1
vote
2answers
440 views

Clients can make maximum only 15 connections to ubuntu custom server

I have a custom server in C# being run on Ubuntu 9 under mono. I can make up to 15 silverlight clients connect to the server. When I make the 16th, it just waits. And if I close one of the established ...
0
votes
1answer
120 views

Linux network adapter keeps changing settings

I'm running CentOS 5 and noticed for the past week that eth0 settings keep changing and I have to reset them. Any ideas what it might be or where I need to start?
-1
votes
2answers
399 views

Mysql blocked my webserver max_connect_error reached [closed]

Last week end, one of my two webservers was blocked by mysql server. The result is all requests on that blocked webserver show a taylored error page. I'm thinking to implement a script to prevent ...
2
votes
3answers
675 views

DDOS Deflate Safe Connection Limit?

I work for a site that often gets attacked by bot networks. We have started to use this tool: http://deflate.medialayer.com/ which auto-bans IPs that have more open connections than the set value. By ...
0
votes
1answer
160 views

If linux server is connected to router, internet connection for the whole network will not work

I have a machine (Fedora) which is using iptables (acting as firewall). The system worked a long time, but now there is a problem. The internet connection was failing. I looked through and found out ...
4
votes
1answer
904 views

IPtables rate-limit, What are the differences between modules? Recent, Limit

I am doing some rate-limiting with IPtables, and i'm not sure if I should use "Recent" or "Limit" What are the differences between the two? If they both achieve the same result, which one has ...
1
vote
1answer
396 views

Ubuntu custom server after some time: Connection reset by peer

I have a linux server program. I notice that after 2 or 3 days some time, the server stops responding. When I look into the server log, I find "connection reset by peer" messages. I have to restart ...
0
votes
3answers
115 views

Establish Linux to Windows connection [closed]

We can establish connection between Unix based machines using these commands - ssh telnet but how to establish a connection between a Linux and Windows? Putty, WinSCP etc are used in Windows to ...
1
vote
2answers
46 views

combined connection for 3 non-stable channels

I have 3 non-stable connections between 2 my Linux servers located in different countries. These 3 connections have different routes. From time to time one or two connections have packet loss problem ...
2
votes
1answer
356 views

How to route all outgoing TCP connections using HTTP CONNECT on Linux

I have a Linux system which is behind a firewall, but it can connect to a HTTP proxy which passes all CONNECT commands through. How can I configure the Linux system to make DNS requests over TCP over ...
0
votes
1answer
347 views

internet connection monitor

I am looking for a tool to check my internet connection (by pinging something and/or retrieving a web page) and when the connection is lost to execute some command (sending an e-mail, resetting my ...
1
vote
3answers
9k views

Setting up Linux iptables for FTP PASV mode connections

I've been doing numerous searches and have learned a little every time but have not found the solution to my problem. I have vsftpd setup, using SSL/TLS ive got it working as I needed, but am unable ...
0
votes
2answers
2k views

How to upload my files to my new vps linux server?

I just installed Ubuntu 10.04 (Lucid) x64 with LAMP on my VPS server. How can I connect to the server using FTP to upload my files?
0
votes
3answers
1k 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 ...
4
votes
3answers
15k views

How do I allow outgoing connections via iptables?

I have two servers. The program on the first needs to communicate with the second on port 2194. I know its not working, because when I do: root@server1 [~]# telnet myserver2.com 2194 Trying ...
2
votes
2answers
2k views

maximum number of squid proxy connections

What is the maximum number of connections squid can support at a time? There are 5000 users in a campus so how many squid proxy systems will I need?
3
votes
1answer
1k views

Debugging Connection Issues Between Two Linux Servers

I have two CentOS 5 servers running iptables and apf. I am having issues connecting with ssh from server 1 to server 2. I can connect from server 1 to a third server and from that third server to ...
1
vote
2answers
416 views

SSH sometimes screws up connection when terminal overflows?

I've got a problem with SSH on a Debian Lenny based server (it's a vHost within a Xen environment, booted on a Xen kernel). I hope someone can help me with this. The SSH connection seems somehow ...
4
votes
2answers
276 views

Linux box takes 10 seconds to make a connection

My machine is taking 10 seconds to establish a connection. Once the connection is established, it is up to speed and works correctly. But if I for example ping www.google.com, it takes 5 seconds for ...