Thursday, December 3, 2015

Wednesday, December 2, 2015

SSL, certificates, sessions Info

See
https://www.digicert.com/ssl-cryptography.htm
Browser Server Communication


http://security.stackexchange.com/questions/20803/how-does-ssl-tls-work

which refer to
http://security.stackexchange.com/questions/6290/how-is-it-possible-that-people-observing-an-https-connection-being-established-w

http://security.stackexchange.com/questions/5/does-an-established-ssl-connection-mean-a-line-is-really-secure

The other answers are good, but here's a physical analogy that may be easier to grasp:
Imagine a lock-box, the kind with a metal flap that you put a padlock on to secure. Imagine that the loop where you put the padlock is large enough to fit two padlocks. To securely exchange send something to another party without sharing padlock keys, you would
  1. put the "Thing" in the box, and lock it with your padlock.
  2. send the locked box to the other party.
  3. they put their padlock on the loop also (so that there are two locks on it), and return the double-locked box to you
  4. You remove your padlock, and return the now singly-locked box to them
  5. they remove their own lock and open the box.
With encryption the locks and keys are math, but the general concept is vaguely like this.

Sunday, November 15, 2015

Google for ipad - full results

For some reason (possibly related to monetizing mobile browsing) Google has designated iPads to be 'mobile' devices and shows the skinny results page meant for phones.  (A recent change in late summer/fall 2015)

Many people, self included, find this annoying.

Instead of starting at google.com
Try the following:

http://www.google.com/webhp?nota=1

Saturday, October 31, 2015

Win7 Repair tips

chkdsk

May have to boot the OS cd and choose repair, then boot to cmd prompt

bootrec /fixmbr

bootrec /fixboot

bootrec /rebuildbcd


Thursday, October 22, 2015

Wireless products

For a great router that can work as an Wireless Access Point (WAP), and at AC1900 speed....consider
the D-Link DIR-880L.

For a Range Expander, we've used Amped's REA20.  Note it requires a medium to good strength signal to boost.