Systems & Networking

All about operating systems, and networking.

Make Packages from all Installed Ports in FreeBSD

Sometimes it's useful to create .tbz packages of all the installed ports on your FreeBSD system. Whether it's for a backup or for use on other similar systems, using the ports that are already built to your liking can save lots of time.

procmail-wrapper FreeBSD 9.0 (i386) version for use with Virtualmin

This is similar to the Ubuntu PowerPC version found at http://www.unibia.com/unibianet/developer/procmail-wrapper-ppc-powerpc-v... but for FreeBSD 9.0 i386. If anyone wants a 64-bit version, ask and I will make one.

Download it below.

How to Use Disk Labels in NAS4Free or FreeNAS Legacy

You have a FreeNAS 7/NAS4Free server setup and you have several USB drives attached to it. Your ongoing issue is that every time you reboot your FreeNAS server the disk mounts get mixed up and the drive numbers are out of order. One day your 120GB Western Digital HDD is da0, then all of a sudden it becomes da2 while your Seagate 500GB HDD is now da0.

If you have more USB drives attached and you use software RAID. All of a sudden, your Western Digital HDD that stores all those vacation pictures becomes a member of a RAID set. Ouch!!

MySQL Fixing Host is blocked because of many connection errors

I've recently been experiencing a problem with some MySQL servers, "Host 'host_name' is blocked because of many connection errors.

Bypassing Virtual Machine Detection on VMWare Workstation

Often times you may run across some nasty software that will refuse to run inside a virtual environment.  Usually malware is the biggest culprit here, but some legitimate programs may also refuse to install if a virtual machine environment is detected.  Fortunately VMware has created a work around to prevent software from detecting a virtual machine. 

Quick and Easy RTMP Flash Streaming Video with Red5 on FreeBSD

Streaming live video via Flash over RTMP can be done on FreeBSD with minimal effort.  We will use the FreeBSD operating system, the Red5 RTMP server, and the Adobe Flash Media Live Encoder.

Setting Up Email Encryption and Signing with Mozilla Thunderbird 3.1

There are many reasons why you'd want to setup secure email communications (aka: encryption), especially given recent freedom of speech, privacy, and censorship issues in Western cultures.  It is useful and now thanks to Mozilla Thunderbird, it's also very easy to configure and use.

Several WHOIS Servers Hacked!

Interestingly, at about 3:00 AM on Sunday April 11 (that is when I noticed it), the WHOIS queries for several high profile domains appear to be hacked. GOOGLE.COM, AMAZON.COM, GODADDY.COM, MICROSOFT.COM, YAHOO.COM, FACEBOOK.COM, etc. Yet several smaller domains, such as UNIBIA.COM, PACYWORLD.COM, VIEWSONIC.COM, and BROADBANDREPORTS.COM are un-affected.

How to Setup DomainKeys Identified Mail (DKIM) with Postfix and Ubuntu Server

If your mail is always ending up in the "Junk" folder (Yahoo is well known for this), take a look at DomainKeys Identified Mail (DKIM). Your email server will sign every outgoing message with a cryptographic private key. Your DNS server is setup with TXT record in the email's domain that contains a matching public key. The receiving end will take the two keys, and determine if they are a match, thus authenticating your email server.

The implementation is very straight forward with Ubuntu Server.

How to Setup DomainKeys Identified Mail (DKIM) with Postfix and FreeBSD

If your mail is always ending up in the "Junk" folder, perhaps it's time to take a look at DomainKeys Identified Mail (DKIM). DKIM is an email authentication framework (or protocol) that tries to minimize the SPAM problem. Your email server will sign every outgoing message with a cryptographic private key. Your DNS server is setup with TXT record in the email's domain that contains a matching public key. The receiving end will take the two keys, and determine if they are a match, thus authenticating your email server.

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