==================================
Install Roundcube on FreeBSD 6.3
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1. #cd /usr/ports/mail/roundcube/
2. #make config
lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk
x Options for roundcube 0.1.20080104 x
x lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk x
x x [X] MYSQL Use MySQL backend x x
x x [X] PGSQL Use PostgreSQL backend x x
x x [ ] SQLITE Use SQLite backend (php5 only) x x
x x [X] SPELLCHECK Enable spellchecking x x
x x [X] LOCALCHECK Install internal […]

You can easily display dropped and total transmitted packets with netstat for eth0:
# netstat –interfaces=eth0
Output:
Kernel
Interface table Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0 1500 0 2040929 0 […]

Simply use netstat -s:
# netstat -s | less
# netstat -t -s | less
# netstat -u -s | less
# netstat -w -s | less
# netstat -s
Output:
Ip: 88354557 total packets received
0 forwarded
0 incoming packets discarded
88104061 incoming packets delivered
96037391 requests sent out
13 outgoing packets dropped
66 fragments dropped after timeout
295 reassemblies required
106 packets reassembled ok
66 […]

If you think your Linux box is under attack, print out a list of open connections on your box and sorts them by according to IP address, enter:
# netstat -atun | awk ‘{print $5}’ | cut -d: -f1 | sed -e ‘/^$/d’ |sort | uniq -c | sort -n
Output:
1 10.0.77.52
2 10.1.11.3
4 […]

To print list of all unique IP address connected to server, enter:
# netstat -nat | awk ‘{ print $5}’ | cut -d: -f1 | sed -e ‘/^$/d’ | uniq
To print total of all unique IP address, enter:
# netstat -nat | awk ‘{ print $5}’ | cut -d: -f1 | sed -e ‘/^$/d’ | uniq | […]

netstat command and shell pipe feature can be used to dig out more information about particular IP address connection. You can find out total established connections, closing connection, SYN and FIN bits and much more. You can also display summary statistics for each protocol using netstat.
This is useful to find out if your server is […]

This document describes how to set up master-master replication with MySQL 5 on Fedora 8. Since version 5, MySQL comes with built-in support for master-master replication, solving the problem that can happen with self-generated keys. In former MySQL versions, the problem with master-master replication was that conflicts arose immediately if node A and node B […]

In this tutorial I will describe how to install and configure mod_deflate on an Apache2 web server. mod_deflate allows Apache2 to compress files and deliver them to clients (e.g. browsers) that can handle compressed content which most modern browsers do. With mod_deflate, you can compress HTML, text or XML files to approx. 20 - 30% […]

Tuning Apache
Apache is a highly configurable piece of software. It has a lot of features, but each one comes at a price. Tuning Apache is partially an exercise in proper allocation of resources, and involves stripping down the configuration to only what’s needed.
Configuring the MPM
Apache is modular in that you can add and remove features […]

Applications using the LAMP (Linux®, Apache, MySQL, PHP/Perl) architecture are constantly being developed and deployed. But often the server administrator has little control over the application itself because it’s written by someone else. This series of three articles discusses many of the server configuration items that can make or break an application’s performance. This first […]