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Iptables, NAT: avoiding limit on max number of requests per IP by using multiple IPs

In my network, there is a machine which has to make a http request towards a server which is beyond a firewall. This machine's ip address (as seen from beyond the firewall) can be chosen from a pool ...
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Apache spawning hundreds of processes and pushing up load averages

I run a site with about 100,000 visits a day and lately the load averages sometimes hit the roof (250+). They are normally about 0.5-1.5, so I assumed a (d)dos attack. The number of apache processes ...
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Enabling Classic ASP Connection Pooling in IIS 6.0

We have an application running on Classic ASP which I'd like to get to use connection pooling. The application currently uses this as its connection string: "Provider=MSDASQL; Driver={SQL Server}; ...
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486 views

Configuring CentOS for Heavy-ish Traffic

New sysadmin here, managing a CentOS server. This past week has been one of the most exciting weeks of my career, and full of learning all sorts of new things. Today I have another task though, and ...
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Splitting a MySQL DB in two may ease server from “Too many connetions”? I don't think so

I was requested to split a MySQL in two, it's kind of a horizontal partition, in which some rows correspond to one site, and some other correspond to another site. But they want to split it in two DBs ...
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Webserver concurrent connections

Where can I get statistics of concurrent connections that can be handled by Apache and IIS? Which one will serve more requests in peak times? Thank you, Sri
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Kill Leaking Connections on SQL Server 2005

We have a legacy ASP application that somewhere leaks SQL Connections. In Activity Monitor, I can see a bunch of idle processes with Last Batch times over an hour old. When I look at the T-SQL ...
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717 views

Httpd problem, suspect an attack but not sure

On one of my servers when I type netstat -n I get a huge output, something like 400 entries for httpd. The bandwidth on the server isn't high, so I'm confused as to what's causing it. I'm suspecting ...
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118 views

Dropped connections between Linux Servers in Data Center

I have a number of linux servers at a us-based datacenter. The servers were installed by the hosting company, and are running fedora core. We're experiencing problems with dropped connections. The ...
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329 views

Where is the bottleneck?

There is a limit on connections somewhere along the line here... On a windows server 2008 machine, each request to a url running on localhost takes ~3 seconds to complete. This is fine and normal for ...
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1answer
74 views

Does Flash hold connections open on the server?

I have a person asking to serve a Flash movie on our webserver. One of the reasons given for not allowing this is that Flash "holds connections open on the server". This isn't streamed content, it's ...
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1answer
144 views

Determining currently-serving files in IIS 7

serverfault showed me this topic, and I think I want to do the same thing, but in IIS, not Apache. I have a "dashboard" application I'm building and I want it to show what files are currently being ...
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318 views

Mysql : Number of connections in a given duration

How do I find out how many connections were made to the mysql server in a given duration?
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Limit Concurrent Database Connections by SQL Server User Account

I would like to create a SQL Server 2005 user account but limit that user to only allow them to have two concurrent connections to the database at once. Is there any way to do this through SQL Server ...
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maximum number of connections Squid

I have a Squid proxy server that controls all internet traffic for my network. I need a way to stop users from downloading big files (say >50MB) in my network. I banned some famous ports (e.g. ...