JDPFu.com 2010

Sometimes a home or small business would like to extend a network without running any ethernet cables or using expensive power line methods. Many homes have an old WiFi router that is still working, but the new router still doesn’t get signal to all parts of the home or some devices do not support WiFi networking, only 100base-tx wired. By using the new WiFi router with the older WiFi router, it is possible to extend a network over WiFi and locate wired connections on the far side of the home using just the two wifi routers in bridge mode.

Your computer guys are always talking about some coming disaster and trying to get budget for a DR, Disaster Recovery failover location. There never seems to be enough funds. Heck, you may be lucky to get backups rotated to an offsite location.

A story in Dallas Morning News, Water-main break cripples Dallas County computers, operations explains what happened to take down the county computer systems.

Cron has been around since the beginning of UNIX systems. It is a scheduler that will run programs or scripts periodically when scheduled. The scheduling can be for a specific time annually or at the same minute every hour or any period between those. The hardest part for me is recalling the specific format of the crontab. It is very specific and any mistake will

Different effective user accounts use different crontab files, so you can run periodic jobs as yourself or some other account like root. More crontab info .

Ok, finally, on to the tips.

In the last few days, a permanent article here about a WiFi Router Security Checklist has gotten a very large number of hits, over 100x the normal page views. It contains 15 or so suggestions that every home or small business wifi router user should do from a security point of view.

When you see these messages, what does that mean to you?