Latest News from Frank Jennings

Building an Internet Gateway

Mon, 10 Nov 2003 00:00:00 EST

After setting up a LAN for your company, the next step is to build a secure Internet gateway for sharing your Internet connection. Fortunately, you don't have to be a geek to set up a gateway and build firewall rules, as it involves minimal open-source software and minor kernel configurations. By setting up a gateway, you allow all the nodes in the subnet to access the Internet through a single secure point. And the gateway takes care of packet masquerading and filtering based on the Iptables rules you build.

Signing or Sealing?

Fri, 31 Oct 2003 00:00:00 EST

When it comes to securing your classes, Frank Jennings presents two different techniques.

Accessing MBeans Through the Jini Service

Mon, 01 Sep 2003 00:00:00 EDT

Network systems based on service discovery can provide a consistent view of their distributed components even during changing network conditions. The ability of a system to heal itself during a network catastrophe, including architectural change and system breakdown, will help the system to realign its content traversal route intelligently and swiftly. This ability can be obtained from various healing strategies like failure detection, consistency maintenance, and distributed service activation techniques.

Method Processing with Dynamic Proxies

Thu, 24 Apr 2003 00:00:00 EDT

While designing Enterprise frameworks, you ought to be very cautious about exposing runtime instances of classes encompassing secure transaction or management core, outlining Intellectual Property of the enterprise.

Frank's Java Code Stack #1 Working with Cipher Streams

Sat, 01 Jan 2000 00:00:00 EST

(October 11, 2002) - Often it is necessary to encrypt confidential messages and send them across a stream for better Data veracity. With JCE, you can encrypt streams of data and decrypt them using public/private key pair or using a single signature key file. The technique involves associating a Cipher object to Input or Output Stream. Please note that JCE is different from JSA and you need Java Cryptography Extension APIs to work with this example. JDK 1.4 comes with JCE APIs.

Linux Raw Socket Programming - What Lies Beneath a Socket?

Thu, 30 Nov 1995 00:00:00 EST

When I was casually examining my server log few months back, I noticed something was going off beam. To my horror, the primary server crashed, unable to take the load. Usually, I don't get that much traffic. Months later, I realized that I was the victim of a DDOS attack. Being a hacker type myself, I tried to investigate where I failed in my system administration.