Saturday, November 29

Readings in IT

Sometimes people ask me about good books to read about IT security, hacking and such like. Here is a list of some of my favourites. With my tastes and approach to life, all are quite quirky in their own way…..

The Cuckoo’s Egg - Clifford Stoll
(and what he is doing now: http://www.kleinbottle.com)

The Art of Deception - Kevin Mitnick
(and he is now a good boy: http://www.kevinmitnick.com)

Just for Fun - Linus Torvalds & David Diamond
(The Linus FAQ here: http://www.catb.org/~esr/faqs/linus and and interesting take here: http://www.wired.com/wired/archive/11.11/linus_pr.html)

Silence on the Wire - Michal Zalweski
(more info here: http://lcamtuf.coredump.cx/silence.shtml)

Secrets and Lies - Bruce Schneier
(more info here: http://www.schneier.com/book-sandl.html)

Hacking - The art of exploitation - Jon Erickson
(more info here: http://en.wikipedia.org/wiki/Hacking:_The_Art_of_Exploitation)

Network Security Hacks - Andrew Lockhart
(more infor here: http://www.ukuug.org/books/reviews/Network%20Security%20Hacks)

Google Hacks - Tara Calishain, Rael Dornfest
(more info here: http://www.oreilly.com/catalog/googlehks2)

Compulsive Twitchers

Recently read three books by compulsive birders or twitchers:

Sean Dooley - The Big Twitch

Kenn Kaufman - Kingbird Highway

Adrian Riley - Arrivals and Rivals - A Birding Oddity

Although the themes are similar they take quite divergent paths and are driven by by quite different demons.

I always find any kind of biographical or autobiographical books intriguing. I like to get inside people’s heads to try and understand what drives them. Yes - these guys are are all interested in birds, but each is driven by the urge to ‘tick’ as many as they can. Why do people do that? I’m not sure.

Dooley had a lucky monetary windfall (due the loss of his parents). Was he trying to deal with that? Probably to some extent. But I suspect it is more complex than that. Riley had just retired and needed a focus and a twitch seemed to be the thing. Kaufman was much younger (17 when he started). Book is written many years after the event, but is interesting in they way he was so single-minded in his approach to the task.

Of course you would think that this is a man’s game, and mostly it is, but the out and out leader on a world scale is a woman. Phoebe Snetsinger, with 8000 plus birds. All recorded in her book Birding on Borrowed Time.

Lake Mungo



Lake Mungo - Walls of China

As a student of archaeology, Mungo conjures up to me all sorts of images about the antiquity of human origins in Australia. It also bears testament to significant climate change in the time that humans have been in the area.
A drive out to Lake Mungo certainly exposes one to the sheer scale of the Australian landscape. Once you leave Mildura there is little but sky and flat land in all directions. The Arumpo Road that leads past Arumpo Station and on into the real Australia quickly turns to gravel and sand, and by the looks of the ruts, muddy quagmires in parts after rain.
Kilometre after relentless kilometre my car passes through monocultures of young grain interspersed with mallee mostly on the sandy rises along with saltbush plains on the flat. Every now and then the road is punctuated by a cattle grid, and occasionally small mobs of cattle can be seen grazing on saltbush and the emerging green grasses in evidence after recent rains. In spite of the harsh environment, the cattle look in good condition. Further on sheep make an appearance, again looking solid and healthy.




Occasionally a mob of emu can been seen foraging, mostly one or two adults (males?) with groups of well-grown young in tow. At one point a huge, very dark Wedge-tailed eagle stares down at me from one of the few taller trees in the area. As I get closer it takes to wing with slow, heavy wing beats but quickly begins to glide and soar with consummate ease. Small groups of Major Mitchell Cockatoos provide beautiful colours in whites and pinks as they fly up from their feasting on the large melons that grow in clumps out here. Galahs are also to be seen at these melons from time to time. Such beauty in the birds provides a welcome contrast to the subdued tones of mallee and saltbush that colour the whole area.




Major Mitchell’s Cockatoo


Gluepot



White-browed Babbler

I had read a lot about Gluepot on Birding-Aus and elsewhere. People I spoke to who had made the trip also spoke well of the place.
With these words in mind after a quick visit to Hattah, I found myself wending my way to this remote site. Remote it certainly is - the first stage from Waikerie involved a ferry across the river - not even any bridges out here it seems. Unlike some roads I know in big cities, this ferry was free - no tolls out here either. Bitumen roads were the next to go and a sign at the start of a sandy track said simply: Gluepot 50km.



This 50km was a challenge - speeds were often as low as 40kmh, and never above 60kmh. Not so much rough as very sandy and a challenge to negotiate, kilometre after kilometre, interspersed with luckily dry but badly rutted low sections. Adding several gates to open and close as well made this a leisurely trip.
I wouldn’t want to be here after rain, 4WD or not (and I don’t have one). Gluepot it is for a reason - the soils are just that after rain. My suspicions were reinforced at the visitors centre with signs asking people not to drive around for 24-48 hours after rain. The ranger took one look at my trusty (two-wheel drive) ute and said: ” 20mm of rain is forecast in a couple of days - if I were you I would be out of here before then.”

Hooded Robin

Having made it this far, the visitors centre was a pleasant surprise - new and very well set out. And surprisingly in this day and age, everything was on the trust principle. Of course, to get this far takes a certain type of person and I guess us types can be relied on to pay when we take things.

It is the noise that differentiates Gluepot from Hattah. I guess it is the water at Hattah. Every morning from dawn the air is full of parrot calls. Even the nights had Boobooks calling and responding across long distances. A love duet, or a territorial confrontation? Or just calling for the sake of calling across the lonely plains? Who knows.

Even the nights were punctuated by odd calls of ducks out on the water.

But a Gluepot, as I set up camp at Babblers campsite towards evening, the thing I noticed most was the eerie silence. No birds at all. Quite weird. Often I find at camp sites that birds are around, especially the opportunistic ones like Choughs or Apostlebirds and the odd magpie or two. I had seen all of these on the way in, but nothing at all at the camp.

The night was the same - nothing at all. No owls or anything for that matter.

Even at dawn, the usual morning chorus was absent. Apart from a solitary Butcherbird giving its maniacal call - nothing. Maybe it was just the cold? Anyway, as I cycled along the tracks an hour or so after dawn I began to see various birds. Choughs, a Butcherbird, some Magpies, a group of White-browed Babblers, a lone Hooded Robin and a pair of Brown Treecreepers were easily found and soon several Chestnut Quail Thrushes hopping across the track. But still the silence was almost complete. Lack of water seems to be a big factor.

To someone like me from southern Victoria, the birds are a foreign land. Regent Parrots (yes, the ones some idiots are shooting elsewhere - only about 2400 left in the wild), Mallee Ringnecks and Butcherbirds were soon visible. Hooded Robin, Brown Treecreeper (mostly on the ground!) and White-browed Babbler came next along with White-winged Choughs.

Along with the Chestnut-crowned Babblers I saw at Hattah, I began to notice that they were behaving much like the Choughs at home. I should mention that Babblers area communal species much like the Choughs and Apostlebirds.
In particular, I noticed that they frequented areas where I had spotlighted wolf spiders the night before. Were they working their way through spider burrows here like our Choughs?
Very similar behaviour using the beak to swirl sand out of the ground as they dig rapidly.
Looks like it, but more research is needed.




White-winged Choughs




Spotlighting spiders? … I hear you ask. Strange but true. Try it sometime in bush areas - shine a bright focussed torch along the ground and look along the beam. If you are lucky you might see several glittering jewels on the ground. Spiders! At Gluepot they were all wolf spiders. Many just popped back in their burrows, but a few stayed put for me to photograph. As you can see from the leaves and gum nuts, not very big, but spectacular in their own right.
It was the area I saw these guys that the Babblers were industriously quartering next morning. Hard to tell if it was the spiders. I should have marked some burrows to be sure.








Hattah Lakes




Turning east off the main highway I entered a dry and harsh landscape of low rolling sand hills, stumpy mallee scrub and little undergrowth rising from the dry, sandy soil.

It is a long time since I had been to Hattah Lakes, but the indications of vibrant bird life were a good omen.

Parrots and Cockatoos everywhere. The noise at times was amazing as flocks of Corellas wheeled around giving their loud calls. Galahs in smaller groups with a softer call were also very common and mobs of Sulphur-crested Cockatoos were raucus. Others such as Ringnecks, Regent Parrots and Bluebonnets were also in evidence, but more subdued than the others. Beautiful nevertheless.





In spite of it being in the middle of a desert, Hattah because of its lakes, has abundant birdlife. Not just the desert species, but a wide range of water birds. everything from Grey Teal with small ducklings in tow to Black Swans and Australasian Grebes.

The campsite had the usual ratbags exploiting local abundance: Choughs, Apostlebirds and Noisy miners were common and quite persistent in their search for easy picking in campers food.

Away from the water life was much quieter with fewer parrots and Cockatoos, but the scrub birds were more in evidence - birds like Emu Wrens and Chestnut-crowned Babblers moved through the scrub. Blue-faced Honeyeaters were also in evidence and an occasional Rainboe Bee-eater f;ashed by, conspicuous by its vibrant colours. Every now and then, though, the tranquility was shattered briefly as a locks of Cockatoos and Corellas wheeled above.




Small groups of Emus wandered across the clay pans and groups of Black-tailed Native Hens fled as I approached.







Spiders

Shining a torch across the ground revealed a surprising number of glittering points of light - the eyes of spiders out and about.

With care I approached one bright point and was rewarded with a good view of a large pale grey spider, its multiple eyes staring up at me.


Thursday, May 17

Human nature

The surest way to corrupt a youth is to instruct him to hold in higher
regard those who think alike than those who think differently.

-Nietzsche

Four stages of acceptance:
i) this is worthless nonsense,
ii) this is an interesting, but perverse, point of view
iii) this is true, but quite unimportant.
iv) I always said so.

John Haldane (1892-1964), English geneticist

Food for thought

Some problems are so complex that you have to be highly intelligent
and well-informed just to be undecided about them.

Laurence J. Peter

“In the choice between changing one’s mind and proving there’s no need
to do so, most people get busy on the proof”

John Kenneth Galbraith