Category Archives: technology

TCP/IP Security Notes

Patterns IP attacks typically follow a set pattern. This pattern can be recognized, and rules created to help thwart it – this pattern is refered to as an attack signature. Signatures may be used to create IDS rules. Reconnaissance and Discovery Would-be attackers usually engage in a well-understood sequence of activities, called reconnaissance and discovery. During the reconaissance phase The attacker may ping sweep or port probe the target. The purpose of this reconnaissance is to find out what is running and what may be…

Read MOre »


Startech USB2DVIE2 USB display adapter

Adding an additional monitor with Startech USB2DVIE2 USB display adapter Adding an additional display to an older machine can be expensive and complex. ATI’s multi monitor eyefinity solution requires a new card to be purchased and installed, which is simple enough if a card is available for the specific AGP, PCI or older spec PCIE slot on the motherboard. The cost can scale from 100.00 and up for a low end card. The goal was to just prop up another old 19 inch flat panel in addition…

Read MOre »

Replacing batteries inside an Symmetra Battery Unit

The battery packs on an APC symmetra have a life span of around 5 years, and replacing all of them at once is an expensive proposition. In an attempt to cut costs, I decided to replace the individual batteries that make up each unit. APCs SYBT4 part number refers to a 4 pack of the individual SYBTU1-PLP part, which is a long chassis with a handle at one end and a connector at the other. Each SYBTU1 contains eight individual batteries, and a small circuit…

Read MOre »

MySQL drops leading zeroes from imported US zip codes

After importing a table from a csv import, MySQL drops the leading zero from those codes that contain it. A quick way to fox this is to use a SQL query to update the table. Log into the correct database in phpMyAdmin and open the table in question Choose the SQL option from the tabs at the top Paste the following query in to the box UPDATE table_name SET ZipCode = concat(‘0’,ZipCode) WHERE length(ZipCode) = 4 Modify the statement to fit your situation, including table…

Read MOre »