firefox tips part II

Part 2 of this post.

it turns out that there are some very interesting things hidden in the dom.* section of about:config.

Specifically, there is this handy key which defaults to false, but if set to true is actually a rather beneficial security enhancement:

dom.disable_window_status_change

Setting this to true will prevent javascript from manipulating the status bar. This “feature” is often used in phishing attacks to disguise the real location a given link is referencing. If you set this to true, you will be able to see where you’re really going to end up, rather than where the script is programmed to make you think you’ll be headed.

For some more reading on the topic, designed around building a custom security policy for firefox suitable for pushing out to end users, check out this article.

time warner can bite me

i’ve been playing with ‘traceproto’ a bit lately.

if you haven’t heard of it, it’s a nifty tool, which is likely best summarized by the debian package description:

Traceproto is a traceroute replacement written in C that allows the user to specify the protocol and port to trace to. It currently supports TCP, UDP, and ICMP traces with the possibility of others in the future. A network server version is also planned.

so, i decided to see (very informally) how my roadrunner service from time warner cable may be impacting my VoIP service.

here’s the results:

trace to tcp/80

hop :  min   /  ave   /  max   :  # packets  :  # lost
-------------------------------------------------------
  1 : 0.76100 / 1.1050 / 1.7550 :   3 packets :   0 lost
  2 : 0.76600 / 0.78167 / 0.80800 :   3 packets :   0 lost
  3 : 1.2240 / 3.4590 / 7.8880 :   3 packets :   0 lost
  4 : 1.0330 / 1.0933 / 1.1680 :   3 packets :   0 lost
------------------------Total--------------------------
total 0.76100 / 1.4859 / 7.8880 :  12 packets :   0 lost

trace to tcp/5061

hop :  min   /  ave   /  max   :  # packets  :  # lost
-------------------------------------------------------
  1 : 0.73500 / 0.94200 / 1.3470 :   3 packets :   0 lost
  2 : 0.80200 / 0.80333 / 0.80400 :   3 packets :   0 lost
  3 : 1.2040 / 1.2520 / 1.2910 :   3 packets :   0 lost
  4 : 0.98400 / 1.0927 / 1.2770 :   3 packets :   0 lost
  5 : 1.2880 / 1.9990 / 3.3890 :   3 packets :   0 lost
  6 : 0.0000 / 0.0000 / 0.0000 :   0 packets :   3 lost
  7 : 14.598 / 14.985 / 15.470 :   3 packets :   0 lost
  8 : 14.341 / 15.993 / 17.198 :   3 packets :   0 lost
  9 : 14.772 / 16.039 / 18.456 :   3 packets :   0 lost
 10 : 21.179 / 27.981 / 34.584 :   3 packets :   0 lost
 11 : 20.403 / 25.081 / 31.883 :   3 packets :   0 lost
 12 : 20.033 / 23.694 / 30.763 :   3 packets :   0 lost
 13 : 28.431 / 29.986 / 32.682 :   3 packets :   0 lost
 14 : 27.798 / 28.413 / 28.807 :   3 packets :   0 lost
 15 : 34.406 / 34.864 / 35.174 :   3 packets :   0 lost
 16 : 37.561 / 40.920 / 42.843 :   3 packets :   0 lost
 17 : 37.916 / 38.145 / 38.337 :   3 packets :   0 lost
 18 : 38.952 / 39.225 / 39.401 :   3 packets :   0 lost
 19 : 39.711 / 41.577 / 42.546 :   3 packets :   0 lost
 20 : 46.463 / 50.698 / 58.449 :   3 packets :   0 lost
------------------------Total--------------------------
total 14.341 / 22.377 / 58.449 :  57 packets :   3 lost

trace to udp/5060

hop :  min   /  ave   /  max   :  # packets  :  # lost
-------------------------------------------------------
  1 : 0.66200 / 0.72800 / 0.78000 :   3 packets :   0 lost
  2 : 0.78300 / 0.83800 / 0.93100 :   3 packets :   0 lost
  3 : 1.2470 / 2.9330 / 6.2640 :   3 packets :   0 lost
  4 : 0.98200 / 0.99433 / 1.0130 :   3 packets :   0 lost
  5 : 1.5360 / 3.6990 / 7.9890 :   3 packets :   0 lost
  6 : 0.0000 / 0.0000 / 0.0000 :   0 packets :   3 lost
  7 : 14.158 / 14.761 / 15.356 :   3 packets :   0 lost
  8 : 16.964 / 20.113 / 24.459 :   3 packets :   0 lost
  9 : 14.521 / 22.357 / 26.446 :   3 packets :   0 lost
 10 : 19.974 / 20.604 / 21.070 :   3 packets :   0 lost
 11 : 19.958 / 20.173 / 20.493 :   3 packets :   0 lost
 12 : 20.204 / 24.639 / 32.201 :   3 packets :   0 lost
 13 : 28.219 / 28.462 / 28.705 :   2 packets :   1 lost
 14 : 28.063 / 28.400 / 28.900 :   3 packets :   0 lost
 15 : 34.316 / 34.737 / 35.148 :   3 packets :   0 lost
 16 : 36.924 / 39.390 / 44.055 :   3 packets :   0 lost
 17 : 37.674 / 38.012 / 38.211 :   3 packets :   0 lost
 18 : 39.119 / 39.444 / 39.718 :   3 packets :   0 lost
 19 : 39.005 / 39.188 / 39.481 :   3 packets :   0 lost
 20 : 0.0000 / 0.0000 / 0.0000 :   0 packets :   3 lost
 21 : 0.0000 / 0.0000 / 0.0000 :   0 packets :   3 lost
 22 : 0.0000 / 0.0000 / 0.0000 :   0 packets :   3 lost
 23 : 0.0000 / 0.0000 / 0.0000 :   0 packets :   3 lost
 24 : 0.0000 / 0.0000 / 0.0000 :   0 packets :   3 lost
------------------------Total--------------------------
total 0.0000 / 15.300 / 44.055 :  53 packets :  19 lost

yeah.
that sucks.