Noel's Muses

The well publicised GoDaddy outage on Sept 11 this year should be a huge wakeup for everyone to find out, just how good their network is designed.

So, you have multiple data links to multiple carriers, redundancy, failover, the works, even a wireless/microwave link in case someone digs up the entire block including your fibre. You've also got dual power supplies in your routers, switches, and servers, even redundant routers and switches, they are all protected by dual channel mains supplies, each with their own dedicated UPS and battery bank, both connecting into the grid by two separate diverse paths, backed up by two generators.

You can go to bed tonight and sleep easy can't you... Or can you?

Continue reading "How redundant is your network, really?"

This article is old, most recommendations apply but new technologies are also recommended, see This Link

The biggest problems with getting your Email to someone is getting through the receiving ends mail servers defences.
Sadly, long gone are the days of the early 90's where spam was really only something that was heard of in a supermarket, although it had been around for years, even on ARPANET and it was not of plague proportions like it reached in the mid-late 90's through to the problem it is today.

Continue reading "550 Access Denied"