These are my links for 19 lug 2012 through 20 lug 2012:
Mail server statistics – The statistics are based on completely anonymous information and were performed using randomly chosen IP addresses. When connecting to a mail server defined as an MX in the domain configuration, it can reply in a different number of ways. It may not be online, or may be refusing connections. Also, it is possible that the server does not respond back with a "220" line within the period of time we wait, nor provide a banner that identifies the type of the software running on it, at all times.
Most systems admin is used to setting up the primary mail server, but many of them (like me) are not used to setup a backup mail server in a regular basis. This is my attempt to create a complete document on setting up a backup mail server and testing it for the dooms day. [...]
Squid kerberos authentication and ldap authorization in Active Directory « Klaubert’s Blog – The squid web cache include a authenticator for kerberos, it is simple to use, but the documentation is not very clear about how to make it work. Below some steps use by me to make Squid 3.0 Stable1 and Squid 2.6 Stable17 authenticate against Active Directory (Windows 2003 Directory Service) and also to make it make the authorization using Ldap. This setup was not used in production environment yet, so its possible to had some problems not seen by me or scalabilities issues.
Open vSwitch is a production quality, multilayer virtual switch licensed under the open source Apache 2.0 license. It is designed to enable massive network automation through programmatic extension, while still supporting standard management interfaces and protocols (e.g. NetFlow, sFlow, RSPAN, ERSPAN, CLI, LACP, 802.1ag). In addition, it is designed to support distribution across multiple physical servers similar to VMware's vNetwork distributed vswitch or Cisco's Nexus 1000V.
21 Ruby Tricks You Should Be Using In Your Own Code – 2009 Update: This post was written in early 2008 and looking back on it, there are a couple of tricks that I wouldn't recommend anymore – or to which extra warnings need to be added. I've added paragraphs like this where necessary. Enjoy!
Il Wireshark dei poveri – [...] Non avendo la minima voglia di installare Wireshark su un server così importante, mi sono deciso ad usare netstat. Dopo un po’ di tentativi ho usato la seguente sintassi [...]<br /> <br /> bello Beggiuccio mio
Mappare stampanti di rete con VBScript – Problematica semplice: una stampante di rete nuova, diversi PC che devono poterla utilizzare, non c’è kix che può aiutarmi ma c’è Active Directory con il suo Netlogon sempre valido. Dato che spiegare agli utenti come mapparsi una stampante potrebbe diventare una delle missioni più difficili di questo mondo e data l’urgenza della cosa, un piccolo trucco in VBScript può venire in soccorso per mappare tutto ciò che desideriamo in pochissimi secondi.
Extract Registry values from offline Registry file with RegFileExport – RegFileExport is a new command-line utility for advanced users that allows you to easily extract keys and values from offline Registry file located on external hard-drive and export them into a standard .reg file of Windows. RegFileExport doesn't load the file into a Registry hive like RegEdit, instead, it directly reads the Registry file and analyzes it.<br /> <br /> RegFileExport may also be able to extract keys and values from the Registry file even if the Registry file is corrupted and cannot be loaded by Windows<br /> <br /> [via http://www.bufferoverflow.it/]