- Local time
- Today, 10:08
- Joined
- Feb 28, 2001
- Messages
- 30,624
Ok, first up, I’m a bit confused by all this talk of patches, updates etc.
Albert, the reason that patches came into play at all is admittedly a side door to the main conversation. However, it is an issue because there are two world views in operation here.
One view is that you can build your software in a way that it will continue to work indefinitely in the environment you have set up.
The other is that if you have ANY internet exposure, your environment is NOT a constant and you CANNOT expect indefinite safe execution. As you might have guessed, I am in the "not constant" side of the discussion.
In isolated systems that have tightly controlled access at all levels and have NO external exposure, that stability might be true. The security agencies have machines that have the ultimate internet security - no direct connection to the outside world. All you can do is INDIRECTLY load them when you log in locally. Such systems are highly secure. And yet... they still get patched regularly.
The discussion about patching came in because if you have external exposure, it is unwise to not consider the predatory nature of the internet. Dalski admits to being unfamiliar with some of the issues of computer security and, with his incomplete understanding, suggested some actions that would have dire consequences to system stability. From there, the diversion to patching occurred as, I believe, a natural offshoot of the topics related to security.
There are other paths that get to "unstable environments" as well - such as unexpected growth of capacity requirements. You have to consider aging of equipment that has to be replaced, and given the rate of hardware advancement, it would become harder and harder to maintain the original equipment. Which means that at some point, the environment just dropped out from under you. It has been my experience, and I wish to clarify that it is an opinion, that the only constant in life is CHANGE. But that's not original with me, I just agree with it. That saying comes to us from the Greek philosopher Heraclitus (535-475 BCE).