DJI, depression, buying

The Dow(n) Jones has the worst month since the Great Depression and companies are trying to buy each other. Coincidence? I do not think so. I think this is a buying opportunity.

Posted at 07:35AM Jun 28, 2008 by tgardner in Sun  |  Comments[1]

2008 Open Source Business Intelligence Summit

2008 Open Source Business Intelligence Summit:

Make plans to attend the open source business intelligence summit in Menlo Park on the 26th Jun.

Technorati Tags: opensource, software

Posted at 01:31PM Jun 14, 2008 by tgardner in Sun  | 

Solaris TCP/IP parameters: arp_cleanup_interval

The Address Resolution Protocol enables a host to determine the Ethernet address of a station given the station's IP address. If the host does not know the station's Ethernet address - in other words, the address is not in the ARP cache - the host sends an ARP message to all stations requesting the Ethernet address of the station with a given IP address. The returned entry is stored in the ARP cache.

There are two types of ARP cache entries: solicited and unsolicited. Solicited entries are entered into the ARP cache as a result of requests by the host. Unsolicited entries come from other hosts that have issued ARP requests. "arp_cleanup_interval" is the length of time, in milliseconds, that an unsolicited ARP entry remains in the ARP cache. Unsolicited ARP cache entries are discarded when IP does not request the entry before arp_cleanup_interval expires. The default value of arp_cleanup_interval in Solaris 8/9 is 300000 ms (5 minutes).

ARP attacks may be effective if arp_cleanup_interval is set to a value allowing unsolicited entries to remain in the ARP cache for long periods. An attacker could arrange to fill the ARP cache with bogus entries. On Solaris, the time-to-live of unsolicited entries is given in milliseconds by arp_cleanup_interval. Shorten the interval to reduce the effectiveness of ARP attacks, for example, 60000 ms (1 minute). Note: static ARP table entries entered with "/usr/sbin/arp -s" do not expire. Shortening the interval may increase network traffic, since the ARP cache will be refreshed more often.

Links:

• Sun wiki
• RFC826
• nddconfig

Technorati Tags: arp, arp_cleanup_interval

Posted at 05:14AM Jun 11, 2008 by tgardner in Sun  |  Comments[0]

OpenID sites

The following is a list of sites that support OpenID:

Dopplr, LiveJournal, Blogger, Wiki Travel, WetPaint, and many others. For a more comprehensive list, click here.

Technorati Tags: openid

Posted at 10:22AM Jun 06, 2008 by tgardner in Sun  |  Comments[0]

XRI disrecommended?

Is this a blanket disrecommendation of XRI? And where does this leave OpenID? Is "disrecommended" a word?

Technorati Tags: OpenID, XRI

Posted at 11:58AM May 23, 2008 by tgardner in Sun  |  Comments[0]

Change administrator password in GlassFish

To change the administrator password in GlassFish, follow the following steps.

1. Login to the administrator console:

2. Click on Application Server on the left:

3. Change the password:

4. Look for the green checkmark and "successfully saved":

Technorati Tags: glassfish

Posted at 10:59AM May 23, 2008 by tgardner in Sun  |  Comments[4]

MySQL benchmarking

in addition to my personal favorite, SLAMD - and it's successor openBenchmark - iGenOLTP, mybench and sysbench are available for MySQL benchmarking.

Technorati Tags: benchmarking, mysql, openSource, performance, SLAMD, software

Posted at 03:09PM May 22, 2008 by tgardner in Sun  |  Comments[1]

iTunes + MySQL

iTunes desperately needs a better database management system. Click to read an interesting step in the right direction using MySQL.

Technorati Tags: mac, mysql, iTunes

Posted at 02:24PM May 22, 2008 by tgardner in Sun  |  Comments[0]

MySQL partitioning blog entry

Excellent MySQL partitioning blog entry by our own George Trujillo.

Technorati Tags: blogs, mysql, partitioning

Posted at 08:55PM May 20, 2008 by tgardner in Sun  |  Comments[0]

Apple laptops reviewed

Glowing words about Apple laptops. I agree. It's nice to be associated with two companies with such high standards and quality: Sun, my employer, and Apple, my MacBook vendor.

Technorati Tags: mac, innovation, quality, sun

Posted at 12:57PM May 20, 2008 by tgardner in Sun  |  Comments[0]