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1
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2answers
224 views

Is it possible having two Ethernet connections simultaneously on the same UTP Cat6 cable? [closed]

Actually it is a two part question. 1.Since an ethernet connection only requires 2 pairs (green and orange), is it feasible to wire blue and brown pairs to a different Lan port of a router and ...
0
votes
0answers
13 views

Too many internal connections with apache server on ubuntu/azure

My apache/wordpress server running on ubuntu 15.10. on azure is periodically running out of memory. One thing that is puzzling me is the large amount of apache processes even though there is no ...
1
vote
2answers
53 views

Can a average computer configured as a router support any number of users (connected clients)? [closed]

I am planning to install a router for a rather big amount of users (50-100), and I have found home routers very unstable for this high number of devices. When researching, I have found this report ...
1
vote
1answer
68 views

Trying to estimate concurrent connections on my server - is this the right approach?

My goal is to find out, roughly, how many apache2 connections my server can handle at one time. I've gone through all of my running processes, including the apache2 processes, and figure that of the ...
0
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0answers
35 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 created from one IP address within a span of one minute. We have ...
1
vote
1answer
840 views

How to allow more than two simultanous sessions on Azure

One of our servers is on Azure and we are remotely connecting to it. Unfortunately Azure allows only two users to be logged in at the same time. When the third user tries to log in, he is given the ...
0
votes
1answer
118 views

A LOT of connections from my external IP address to my web server

I installed Nagios recently on a Debian machine running an Apache web server among other things. The thing is that lately, Nagios tells me that the HTTP service is failing intermittently and it seems ...
-1
votes
1answer
267 views

Connecting two GNS3 setups in two VMs in the same PC

How do i connect these two gns3 setups in different VMs? It's all in the same PC. My end goal would be to ping each VPC to each other. I am already able to ping VPCs in with different VLANs but only ...
1
vote
1answer
34 views

connection initiated from linux localhost

One of the linux server was compromised and some of the connections are being originated from localhost to a remote location putting up the information residing on it. I'm trying to trace all outgoing ...
0
votes
2answers
330 views

increase nginx active connection more than 65535

currently I'm doing setup for nginx to accept C1M, I do in my Virtual BOX with Centos 7.0 and RAM 10G. Here my sysctl.conf configuration. fs.file-max = 9999999 fs.nr_open ...
0
votes
1answer
115 views

MySQL connections not closing

I have a web application running on Tomcat7 that connects to MySQL 5.5. I have two servers running the identical code: Ubuntu Red Hat The Ubuntu one runs fine maintaining a steady 8-16 ...
-1
votes
3answers
98 views

3x networks, hardware in 2 locations, 1 connection to join them

Sorry it was hard to think of a title for this, so hopefully I can explain my situation. We have hardware (unix servers) on 3 different network subnets. For example: 10.44.1.0 10.44.2.0 10.44.3.0 ...
1
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0answers
81 views

How do I figure out the number of concurrent connections?

Our server architecture is as follows: Windows 2008 Server RC2 WampServer with Apache 2, PHP 5, MySQL 5 Dedicated connection hits firewall, which is routed to a single web server with multiple ...
0
votes
2answers
467 views

FreeBSD Established Connections Maxing out at 300

We've previously had issues in our environment where it seemed we were reaching FreeBSDs max connection limit. We took action demonstrated by http://nginx.org/en/docs/freebsd_tuning.html and bumped up ...
-1
votes
1answer
118 views

Open file count keeps increasing forever

I'm experiencing issues with the number of files opened increasing over time. If I run my server for about few hours, it'll no more accept any connections. The limit was 1024. I've increased the limit ...
0
votes
1answer
247 views

nginx and Mysql Server Load limits (depend on Server config)

my server config is Technology: Ivy Bridge Processor: Intel Xeon E3 1245v2 Intel Smart Cache: 8MB Cores: 4 Threads: 8 Frequency: 3.4GHz+ Turbo Boost: 3.8GHz Virtualization: yes ...
0
votes
1answer
227 views

syslog-ng 2.0.9 closing tcp connections from some clients instantly..?

I've a syslog-ng instance on 2.0.9, which is old, but... this is enterprise IT and upgrading the versions is... fun... running on Solaris 10. I have this strange problem where some clients stop being ...
0
votes
1answer
64 views

minicom cmd not showing

I am using minicom in centos to try to connect to a cisco router. I did the configuration with minicom -s changed the serial port to the appropriate one /dev/ttyS1. Saved as dfl. and Exit. When ...
2
votes
1answer
7k views

Too many established connections left open

I have a (probably quite old) CentOS 4.5 server with a custom java application running inside. I found the application was crashing after some running time and found it was handling 1024 connections ...
0
votes
0answers
101 views

php-cgi on nginx slows server

Im having some trouble with my server lately because of more users coming to my website. If i get around 400 aktive users online, the server is really getting slow and it takes around 20 seconds to ...
2
votes
2answers
89 views

aggregating multiple ISP connections

OK, so we have an office in Pakistan. Phone and ISP service is pretty poor there, so they have 2 ISP connections, one thru Pakistan telecom, one thru a different ISP. The PK tele one has a router that ...
1
vote
1answer
115 views

Can multiple servers listen on the same port when no Bind/Accept has occured

When you have a Windows machine (server or home edition) which is running 2 servers, and they are both listening on port 4000, however none have had a request to connect? What happens when a client ...
-1
votes
3answers
12k views

Can ping servers but cannot connect to them

Sorry in advance if this question is a bit newbi-ish. I downloaded Microsoft Connection Manager and added multiple .rdg files for different servers I need to access. I can browse to only a few of ...
1
vote
1answer
1k views

Mysql remote connections logging

I need to allow remote connections to my mysql server running on latest stable CentOS. I don't like this idea at all so I want at least to collect as much relevant information as possible. To be ...
19
votes
2answers
31k views

What value of thread_cache_size should I use?

I'm using Asp.Net together with MySQL. In the .Net connection string, I have set Max Pool Size to 150. If I run the following I get these values: SHOW GLOBAL STATUS LIKE 'max_used_connections'; ...
5
votes
2answers
1k views

Windows 7 Network Connections empty

Whenever I try to look at my network connections, the window opens up empty. The only thing shown is the Organize button. I went into Device Manager and deleted my network devices, but now ...
3
votes
2answers
301 views

On a LAMP stack, how to limit the number of concurrent connections and serve a static page for those who are beyond that limit?

I'm aware of the Apache directives MaxClients and ListenBacklog. I'm trying to set a limit of, let's say 100 concurrent connections after which the new connections will be served a static page. Can ...
1
vote
1answer
5k views

haproxy and persistant connections

I am using HAproxy to load balance between more web server. Those webservers are using PHP and sessions to keep one's session open. Now, I think that when a user refreshes the page, it is sent to one ...
0
votes
1answer
975 views

limiting the number of global connections per second

I want to limit the number of ALL incoming NEW connections on a port, not only from one IP, something like: iptables -I INPUT -p tcp --dport 22 -m state --state NEW -m limit --limit 3/s -j DROP But ...
2
votes
2answers
738 views

How can I connect to some old Sun servers?

We have some old Sun servers (V125, V210, V240, T2000 amongst others) sitting unused and I've been asked to find out if there is anything useful on them before they get wiped and disposed of. ...
2
votes
2answers
616 views

CentOS 6.2: apache stops accepting connections

I have server with CentOS 6.2, apache 2.2, php 5.3, mysql 5.1. Server is installed in KVM container. From time to time apache stalls. It just stops accepting connections. Looks like it reaches ...
1
vote
1answer
2k views

windows 2008 R2 server IIS 7.5 not loading pages on first visit…requires refresh 2 or 3 times

This could be a network thing at my ISP where my box is colocated...not entirely sure. I wanted to just check here to see if anyone has seen an issue like this that is server related so I can check ...
0
votes
1answer
430 views

Best way to connect two separate networks with separate internet connections within the same building

I'm a programming intern, and since I'm the only one in the company who seems to have rudimentary knowledge of Linux I've been given the task of setting up a network so that employees may share files ...
0
votes
2answers
2k views

Very large number open connections from web to DB server

I run 2 servers, 1 web (nginx/php), 1 database (mysql). Nginx has about 1500 active processes per second, and mysql status shows about 15 currently option connections on average. Now today i started ...
1
vote
3answers
400 views

Cached content causing a huge number of 404 errors, too many connections

My site has been largely unresponsive for three days due to a large amount of traffic. A JavaScript element on the page regularly requested images from the server, and the number of connections ...
6
votes
4answers
6k views

How do I check how many connections are open currently on a specific TCP port?

I'm doing some comet benchmarks and would like to see how many open connections I have. Actually I use netstat: netstat -ant | grep 8080 | grep EST | wc -l But it needs around 4-6 minutes to list ...
0
votes
1answer
50 views

Switches and the amount of load

Out of curiosity does anyone know whether it would be more beneficial to have more switches with less terminals on each leading to your main switch OR load up each switch fully before having any ...
1
vote
2answers
758 views

How to monitor/log internet up time

I have home network setup, where I have 1 thomson wifi router, 2 telephones, 1 tv, 1 desktop and 4+ laptops. I have the Estonian standard internet of ~15 Mbps for the last 4+ few years. The desktop ...
0
votes
1answer
579 views

When Does the Linux & Windows' Samba Port Connection Close?

After connecting to a samba share, then disconnecting, netstat still shows that the ports are ESTABLISHED, even when the clients are on SUSPEND, HIBERNATE, or have SHUTDOWN. Looking over the samba ...
0
votes
1answer
6k views

Find out which users are connected to a shared printer

Today we're migrating to a new file and print server, which made me wonder, is there a way to see which users are connected to a shared printer? It's possible to see connections to shared folders in ...
-1
votes
2answers
727 views

how can a server handle lots of port 80 connections

Admittedly this is a simple question but 20 minutes of googling and I just can't find an answer... I will frame my question with an example. say I own www.reallypopular.com and my website sees 100 ...
1
vote
1answer
91 views

is there any problem with my server

Below is a Munin Service Monitor screenshot for netstat by day which have a lot of failed connection. so I need to know is this a serious issue?
0
votes
2answers
146 views

LAN-intern solution for server-side auto-IP-block

We got the problem, that our web server provider blocks our static IP address automatically, when we reach 200 simultaneous connections in the time window of 300 seconds. I'm running an Ubuntu server ...
0
votes
2answers
401 views

monitoring the size of an SQL Server connection pool

We are trying to track down a performance issue. One theory we have is that we are running out of connections in the connection pool. Is there a way to monitor the size of a connection pool?
0
votes
1answer
1k views

jboss 5.1 mysql connection pooling

I am using JBOSS 5.1.0.GA, MySQL 5.5 and Hibernate 3.3.1 GA (included with JBOSS) + Spring. My question is do I need to add c3p0 as a data source in my spring/hibernate configuration for connection ...
0
votes
1answer
1k views

listenbacklog directive not working in apache2.2

I was trying to make apache 2.2 reject connections if MaxClients was reached, to do this I found the directive ListenBacklog.To test it, I configured apache in the following way: <IfModule ...
7
votes
3answers
845 views

mysql “Too many connections” killed the network? [closed]

So I'm pretty confused here, figured I'd throw this out here and see if anyone else has any good ideas. We suffered a pretty big outage two nights ago, and I'm still searching for the root cause. I ...
2
votes
4answers
261 views

Oracle performance problem

We are using an Oracle 11G machine that is very powerful; has redundant storage etc. It's a beast from what I have been told. We just got this DB for a tool that when I first came on as a coop had ...
1
vote
0answers
248 views

Auto switching between wired and wireless connections

How about this situation. Our business deals a lot with medical information. And some of our clients have demands based off HIPPA, etc. There is one now where they do not want an employee to have both ...
2
votes
4answers
299 views

How to downgrade a 120 Mbit line, to test website speed?

How to downgrade a 120mbit line (our current connection) temporary to a 10mbit to test what our potential clients with less speedy internet are experiencing as the website loads? At this moment ...