Category Archives: Technical

https://www.virustotal.com/ A good one. I had a suspicious email in my CUNY account with a doc attachment. And with this online scan, I could lookup lots of details and even determined that the virus I got "should not" infect Android … Continue reading →

With my Fujitsu Lifebook P1620, the battery that came with it is loosing charge capacity. It is discharging faster than I anticipate (about 1 hour of life only). The solution has to do with a COMPLETE discharge of the battery … Continue reading →

http://www.speedtest.net/my-result/4755704520 at home. After new modem upgrade. I think there's not much difference.

Solution: Edit xml file: C:\Program Files\Adobe\Acrobat Reader DC\Reader\AcroApp\ENU\Viewer.aapp to contain only the first line. I had the rest commented out with: <!-- ... -->

I'd often wondered/confounded by the /32, /24, /16, etc. appearing after the ip addresses. Now it is clear. CIDR Start Range End Range 69.208.0.0/0 0.0.0.0 255.255.255.255 69.208.0.0/1 0.0.0.0 127.255.255.255 69.208.0.0/4 64.0.0.0 79.255.255.255 69.208.0.0/8 69.0.0.0 69.255.255.255 69.208.0.0/11 69.192.0.0 69.223.255.255 69.208.0.0/12 69.208.0.0 … Continue reading →

iptables -I FORWARD -d 58.108.0.0/16 -j DROP Blocks all ip: 58.108.*.* Despite many commands suggested to block ip, the above appears to work best. FORWARD, not INPUT. Unless, of course, I was misled by coincidence where just after executing the … Continue reading →

In USA, there's Gorilla Crazy Glue. But it's not crazy enough. One must order from overseas...AFAIK. The true super glue contains: Cyanoacrylate

Solution: Right click an empty area in the left panel column of Window Explorer, select "Show All Folders". Done.