Mar 222012
 

This is an article of mine, first published on Wazi
You can read the first part here

In this article we’ll see how apply BPF filters to wireshark to show the details of an HTTP session, an e-mail session and how to monitor who is visiting a certain site from our local network.
Finally I will make a summary of the most useful filters to use with Wireshark.

Here’s another classic example – an HTTP session. As before, start Wireshark and start capturing the traffic from the interface that goes out. Today, most HTTP traffic is compressed to speed up the exchange of information, so by default Wireshark decompresses the body part of HTTP packets. You can click on Edit -> Preferences -> Protocols -> HTTP and verify that “Uncompress entity bodies” is checked.
Continue reading »

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Mar 112012
 

This is an article of mine, originally published on Wazi

WordPress , the popular content management system (CMS), is easy to configure and use, and is well supported by its community of professional consultants. WordPress depends for its operation from a full stack that includes an operating system, database, web server and PHP. If you can optimize this stack, you can improve the performance of your site. Here are some tips and best practices for a configuration that can improve performance without forcing a hardware upgrade.

In the first part of this guide we have seen what to check and modify in the operating system and database server (mysql)
In the second part I have presented the instructions to set the http server (Nginx to be exact) and PHP .

Today we will see APC, the configuration of WordPress and Varnish. Continue reading »

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Mar 082012
 

This article of mine has been original published on Wazi

WordPress, the popular content managing system (CMS), is easy to set up and use, and well supported by both its community and professional consultants. WordPress depends upon a complete stack that comprises an operating system, database, web server, and PHP. If you can optimize this stack, you can enhance the performance of your site. Here are some tricks and best practices for a setup that will improve your throughput without forcing you to upgrade your hardware.

In the Part 1 of this guide we have seen what to check and change in the Operating system and on the database server (mysql), today we’ll see how to setup the http server (Nginx to be exact) and PHP.

Continue reading »

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How to download recursively from an FTP site

How to download recursively from an FTP site

In these days I had to download a lot of files from a remote FTP server, the best solution in cases like this one is to login on the remote server and do a zipped archive of all the files (for this use tar -zcvf archivename.tgz /path/to/archive/) , in this way you’ll have to download […]