Introduction
OpenNTPD is a Unix system daemon implementing the Network Time Protocol to synchronize the local clock of a computer system with remote NTP servers.
OpenNTPD is primarily developed by Henning Brauer as part of the OpenBSD project. Its design goals include being secure (non-exploitable), easy to configure, accurate enough for most purposes and with source code […]

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Introduction
httperf is a tool to measure web server  performance.
Example
$ httperf –server haproxy.com –port=80 –uri /frontend_dev.php –num-conns=25
httperf –client=0/1 –server=haproxy.com –port=80 –uri=/frontend_dev.php –send-buffer=4096 –recv-buffer=16384 –num-conns=25 –num-calls=1
Maximum connect burst length: 1

Total: connections 25 requests 25 replies 25 test-duration 0.528 s

Connection rate: 47.4 conn/s (21.1 ms/conn, <=1 concurrent connections)
Connection time [ms]: min 4.9 avg 21.1 max 408.2 median 4.5 […]

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What is Port Forwarding?
Port forwarding is a feature of the IPTables system. It allows one computer to forward connections made to it so that another computer can actually process the request. If you want a very simple metaphor you can think of it as mail forwarding. Each computer has a number of […]

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