ashleyknowles

IT professional, Formula 1 addict, security/hacking enthusiast, I love LAMP

January 5, 2011
by Ashley Knowles
0 comments

Sphinx Search for Invision Power Board

I’ve toyed with Sphinx before. It blew my socks off… Until it broke.

Sphinx is an Open Source indexing engine, which is supported out of the box by the forum software, Invision Power Board (IPB). Essentially what Sphinx does, is run a bunch of queries against the IPB database, usually hosted on MySQL, pulling the entire post content (amongst other content types) and indexing it efficiently.

The result is blisteringly fast searches, arguably 10 times faster then the highly optimised MySQL queries employed by the IPB software. On a forum with over 1 million posts, containing over 1GB of text, SQL just can’t keep up. Continue Reading →

January 5, 2011
by Ashley Knowles
2 Comments

Shoppers vs Shops – Online Buying Debate

As a small business owner, I’ve witnessed first hand the effects of overseas online retailers. I have lost numerous sales because an overseas dealer can offer the same product to customers for around 10% less.

One of the products I used to sell was 20% off cost price to me, including GST. An overseas retailer for the same product, would buy it from the Australian manufacturer at the same 20% cost price – BUT they would also be exempt from GST, so a further 10% (or there abouts) discount… Consider that, and you see that overseas retailers are able to sell AUSTRALIAN MADE products cheaper then legitimate Australian dealers of the same product!!! What a joke.

It angers me that the Australian public have backlashed against the retailers for their suggestion of imposing GST on imported items, or by removing GST on items under $1000 sold by retailers in Australia (the latter idea seems to have been completely disregarded, even though it would give the impression that locally sold items are cheaper).

I’m all for a bargain, but at what cost? Australian retail businesses are losing out to overseas retailers through a very simple loophole.

In addition to my previous example, imported goods sold by Australian retailers are also affected. When a retailer orders in over $1000 of stock, they must pay 10% GST plus a duty tax, on top of the shipment’s value. Even if the individual items being imported are worth less then $1000 each, the taxes are paid on the value of the entire shipment… Consider a regular shopper, who purchases only one of these items, under $1000, and they won’t pay a single cent in GST or duty.

News.com.au – Shoppers: 1, Retailers: 0 in online shopping battle

December 31, 2010
by Ashley Knowles
0 comments

Silvia Z32 Gearbox Conversion Info

Briefly mentioned this on my blog a long time ago, and have had a few people asking me about it.

I own an S15 Silvia, which came with a 6 speed manual gearbox – notorious for breaking. Even the other SR20DET gearboxes in the S13 and S14 are known to break easily when some decent power is pushed through them. Continue Reading →

December 30, 2010
by Ashley Knowles
0 comments

Getting More out of Google AdSense (And a bit of SEO 101)

There’s lots of gimmicky “make a quick buck” packages, scams, or whatever you want to call them, floating around on the internet. It sums up the dream really, to sit at home and earn money, whilst merely sitting on the couch, or for the responsible people, spending time with their family.

A good friend of mine once bought into one, and was kind enough to send me the content she received upon doing so. For a small sum of ~$30-50, you received a bunch of how to guides, covering the use of Google AdWords, generally promoting your content, and how to make money from it. Continue Reading →

December 2, 2010
by Ashley Knowles
0 comments

WPAD & Proxy Timeout Issue

If you’ve been following, I’ve recently been playing with Forefront Threat Management Gateway 2010, the “new” ISA Server.

Now, for all intensive purposes, everything is configured correctly. There’s a virtual IP for the proxy array (let’s say, 192.168.0.10), and the WPAD file is published, and contains the IP addresses of both proxies (let’s say, 192.168.0.11 and 12). The DNS and DHCP records are created, pointing clients to wpad/wpad.dat

If I configure IE to point directly to the proxy’s virtual IP or it’s statically configured DNS A record, it all works fine.

Something’s not right. Internet Explorer successfully picks up the WPAD file, but from there, it doesn’t work. Why?

Well, after days of trying to figure it out, it turns out to be something very obvious. The client PC’s I’m using are in different VLAN’s.

Connecting via telnet to the virtual IP on port 80 works fine, connecting to the individual proxies in the array times out.

I guess I have to open up the firewall to allow port 80 to the individual proxies!

November 25, 2010
by Ashley Knowles
0 comments

WSUS, TMG & WPAD – Making the Proxy Bypass List Work!

I got tasked with a problem today which was plain weird…

New servers being deployed, are unable to contact the WSUS distribution point to check for updates.

The file C:\Windows\WindowsUpdate.log show the following errors:

2010-11-23 11:03:45:106 800 634 Misc WARNING: SendRequest failed with hr = 80072ee2. Proxy List used:
Bypass List used : <(null)> Auth Schemes used : <>
2010-11-23 11:03:45:106 800 634 PT + Last proxy send request failed with hr = 0x80072EE2, HTTP status code = 0
2010-11-23 11:03:45:106 800 634 PT + Caller provided proxy = No
2010-11-23 11:03:45:106 800 634 PT + Proxy list used = theproxyip:80
2010-11-23 11:03:45:106 800 634 PT + Bypass list used =

Microsoft’s error code list (here – support.microsoft.com/kb/836941), show thats 0x80072EE2 is a connection timeout error. Continue Reading →

KB836941 – You may encounter temporary connection-related errors…….client error codes

November 24, 2010
by Ashley Knowles
0 comments

My iptables “base” ruleset

I’m not 100% sure if this is correct in a security sense, but thought I’d post this. For my web/database servers, it’s a pretty basic setup really. Drop all inbound packets not specifically allowed, and allow all outbound unless specifically denied.

Open for comment / feedback. It’s for all intensive purposes, pretty secure in my opinion. The only thing making it more secure would be dropping all outbound packets and specifically allowing traffic outbound, which might be the next thing I will work on. Continue Reading →

November 24, 2010
by Ashley Knowles
3 Comments

Getting your foot into the IT industry & my history

I get asked a fair bit, do I know of any jobs going in the IT industry, by mates looking to get into IT. I occasionally get asked, how I got to where I am today also. So I’m writing this post for anyone out there, who’s just finishing school and wondering what the next step should be, or older folks just looking to switch into a new career path.

I’ll start first, with an analysis of a group discussion I found and posted in on the LinkedIn social networking website (discussion thread - “Is a Masters Degree Worth It?”).

The conversation was started by a guy named Alan, working at McDonalds, and looking to get into the IT industry. He has just completed a Bachelors Degree in Computer Science, and is wondering if a Masters Degree would further his chances of initially being hired. Continue Reading →

LinkedIn
PeopleBank
recruitment agency specialising in IT positions
M&T Resources
recruitment agency specialising in IT positions
Talent International
recruitment agency specialising in IT positions

November 2, 2010
by Ashley Knowles
0 comments

Makeshift Anonymous (aka always encrypted) Browsing

In light of all the “omg, people can hack into my Facebook/Twitter account now” rubbish that’s been headlining around the world in the last week, I faced a similar situation, in constantly being prompted to allow access through a firewall, which seemed to think my access to brain dump material was actually an attempt to access pornographic material.

Now, obviously, I don’t want some security guy tapping on my shoulder and asking what the heck I’m doing looking up pornography, to find that, hey, I’m not. But how can I avoid this altogether? And in addition, how can I browse the internet securely without worrying about people on the same network as me, or anywhere in between?

The solution I’ve settled with is simple. Continue Reading →

hideipology.com – Rotating IP Addresses vs Static IP Addresses

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