28 June 2007

firefox tips part II

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.

22 June 2007

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.