* Posts by koolholio

257 posts • joined 3 Mar 2010

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British bureaucrats are world's most social-media-tastic

koolholio
Mushroom

maybe his co-workers could complain about horse manure! NOW! That's beuracracy

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Windows' authentication 'flaw' exposed in detail

koolholio

session based tickets

The Kerberos Ticket-Granting Server uses 'seeding' patterns for its 'session-based' authentication, the very basis of how it works is rather insecure.

As regards to the Kerberos network connectivity, look to the KDC for that.

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Microsoft encrypts explanation of borked Windows 10 encryption

koolholio

All in the implementation of the crypto

When adding 256-bit XTS-AES encryption, I note XTS is "a block cipher mode of operation"

Can you confirm it is not DMA port related?

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Bringing discipline to development, without causing pain

koolholio

Wishful thinking has no place in computer science

As regards to the interviewing question, I despise developers that ask such a question/have that mindset, since if they were proper developers they'd have already researched the physics (including quantum physics) behind it, before asking the question since, critically, computing is a science.

The same applies to "how many sides on a amplituhedron"

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Free HTTPS certs for all – Let's Encrypt opens doors to world+dog

koolholio

Re: wonder how good mobile support is

Yes you will find there is a difference between mobile and desktop certificate support and method. I also doubt the CA is on the 'default' trusted CA's list for every device... so you may still find issues

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koolholio

Devils advocate

That's all great that they're a free CA... It's not at all expensive to set up a CA... however, how long will the CA last? and more importantly is it 'trusted' by the majority? How long until an abuse of their 'supposed' secure crypto?

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Ponmocup is the '15 million' machine botnet you've never heard of

koolholio

4000 is nothing

4000 doesn't seem a lot in the general scheme of things, with some techniques reaching into the plausible millions of variants... *cough* amatuers

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Plusnet ignores GCHQ, spits out plaintext passwords to customers

koolholio
WTF?

Encryption/hashing/salting of password versus transport layer security / SSL

What you are partially referring to in this article is more, the pci-dss standard...

Im sure even the 'plaintext' password is somewhat transmitted over HTTPS? (SSL / TLS) or at least I hope so, otherwise it wouldn't be pci-dss compliant.

'Rainbow tables' comes to mind when talking about supposedly 'one-way' hashing and salting using commonly available/commercial crypto... which is not too hard to decrypt such hashing / salting, so it doesn't really make an ounce of difference to the 'knowledgeable'...

Next, CESG would advise businesses to use publicly available FIPS...? Or would that be a step too far?

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What the Investigatory Powers Bill will mean for your internet use

koolholio

webcaching --- theres the simple answer, oh wait they implemented that on most ISPs about 5 years ago...

if any request frame passes through port 80 or port 443 then cache... log data of what IP, time and URL requested (in the frame)

Similar to how a proxy works... its just mandated at the router...

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koolholio

Re: Can anyone* see my web requests if I use HTTPS?

"copies of major root CA private keys"

Why bother with that? Just go for implementation flaws and protocol vulnerabilities... SSL 2 is obsolete, SSL 3 is vulnerable ... and SSL in itself is potentially flawed... TLS isn't so perfect either...

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koolholio
Headmaster

DNSSEC / EDNS0

You forgot to mention the TCP port 53 fallback and DNSSEC / EDNS0...

You also forgot the technical detail that a DNS request can be "edns-udp-size 4096 ;" yes 4096 bytes of data...

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Bacon can kill: Official

koolholio
FAIL

Sensationalism

The actual study they used states:

a) it is suggestive...

b) "there are no studies evaluating the carcinogenic potential of meat in relation to its content of carcinogens."

c) "we performed this study focusing on Spanish population."

d) "the study population should halve the monthly consumption of these foods, and also not to surpass the number of 5 servings of beef/pork/chicken (considered together)."

e) mentions chorizo

Title: An estimation of the carcinogenic risk associated with the intake of multiple relevant carcinogens found in meat and charcuterie products

Source: http://www.researchgate.net/publication/272028491_An_estimation_of_the_carcinogenic_risk_associated_with_the_intake_of_multiple_relevant_carcinogens_found_in_meat_and_charcuterie_products

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If MR ROBOT was realistic, he’d be in an Iron Maiden t-shirt and SMELL of WEE

koolholio

Re: urine-filled bottles

since when did The Reg turn into a sensationalist tabloid?

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Spooks, plod and security industry join to chase bank hacker

koolholio

Suggestion

Improve the M-SEARCH discovery function of SSDP...

You can test vulnerability here --- https://www.grc.com/su/upnp-exposed.htm

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NHS site defaced with screed protesting Syrian conflict

koolholio

Looks like the hacker has done other NHS sites previously:

http://www.zone-h.org/mirror/id/23510379

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Users rage as Fasthosts virtual servers go titsup... again

koolholio

Any link with their web server would be my question...

Then again, could be an update mishap?

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Police 'stumped' by car thefts using electronic skeleton key

koolholio
Joke

Re: As I was saying

I read that as cat, shall I connect my pets to it too? *hic hic*

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UK gov's troll-finder general says he's hanging up his axe

koolholio
Go

"mainly cite section 127 of the 2003 Communications Act, which outlaws messages that are "grossly offensive or of an indecent, obscene or menacing character"."

I believe that may also cover those of frivolous or vexatious nature... if not, it f'in well should!

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Are you being robbed of sleep by badly designed servers?

koolholio
Pint

Harmony in a network

I dont know whether its specific to servers or network infrastructure, since infrastructure is what servers sit and reply on, so they must somehow work in unison.

Heres a metaphor:

The network is like a road, a server is like a petrol station... where the server gets its oil from is just as important as who it serves, but also the effect it can have on its customers vehicles too.

Dodgy batch (patch) of petrol? :-S Or is it 'the standard', 'the design' or 'the implementation'?

The problem is, if a remote administrator can do something, if not thought about whos doing what and when... its possible for others to do too? :-/

Just a thought of metaphorical proportion?

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Harassed Oracle employee wins case, cops huge legal bill

koolholio
Joke

Wouldn't one need a lawyer/barrister for that also?

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koolholio
WTF?

Re: You takes your chances..........

@Symon

In the UK that could be tricky, since the circumstances of bumping the elbow would be taken into account. Given that presumably, the spilling of the pint is a sub-effect of bumping your elbow and the intention.

Criminal legislation in the UK does somewhat cover this, such as the protection from harassment act / equality act and other legislation may touch upon it (for instance in the computer world, communications act / misuse of computers act / data protection act)

The likelyness is, they would plead not guilty in court, normally, just to bump the cost in a typical 'victory for the victor' duel, which actually then makes it economically unviable from the offset for the average joe that may have to pay for rectification of the matter also (e.g. mental health).

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US House of Representatives passes CISPA by 288-127

koolholio
Joke

"Once you understand the threat, and you understand, the mechanics of 'how', it works"

Yet his 14 year old nephew, didnt understand the mechanics of it....

It's a rarely static threat, so to determine its mechanics is like, likening electricity flow to some cog wheels turning...

Best get the elbow grease at the ready and all turn into mechanics... *shakes head in hands* the irony!

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Publishing ANYTHING on .uk? From now, Big Library gets copies

koolholio
Pirate

Out comes the pragma/cache-control, copyright, doc-class, doc-rights and other applicable meta tags!

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Ancient website from 1999: By Mark Zuckerberg aged 15¾

koolholio
WTF?

Re: Good to see...

Faceparty was the original contender to Myspace...

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IT Pro confession: How I helped in the BIGGEST DDoS OF ALL TIME

koolholio
Boffin

Possible to detect and monitor... but not so easy to filter out

You can capture just dns requests from a dns server itself using a capture filter, such as this one:

"<CONNECTIONTYPE> host <GATEWAYMAC> and src net <LOCALNET/CIDR> or not src net <LOCALNET/CIDR> and port 53" (optionally omitting "and udp" and changing the port if configured differently)

of course you can specify destinations respectively, if you're doing this further upstream by using:

host <IP> or net <IPRANGE/CIDR> or mask <netmask> if its over multiple subnets

Which will capture all requests and responses to and from... Heres where it gets difficult:

You would just need to apply filters to this, using pattern matching for distinguishing characteristics but there may be need for utilising comparisons within the filters.

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koolholio
Boffin

Possible solutions for the opensource community

http://www.ntop.org/products/ndpi/

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koolholio
WTF?

Re: Caching?

so are you saying that TTL, expiry and any cache including an EDNS0 cache timeout are redundant and are of no effect in relation to caches and if that is the case... caches may aswell not exist...

If that is the case, I also think a cached response shouldn't have its own flag assigned to it?

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koolholio
Boffin

Re: Caching?

Or, depending upon your network setup... you could implement the use of a router/switches iptables/netfilter (provided it has --match --hexstring and --algo filters) by matching the request for the recursive flag set on usually UDP packets inbound at a certain offset. I believe iptables/netfilter is included within most linux and unix distros. Zeroshell (a linux based router distro) may even allow you to enter raw commands to utilise this.

Wireshark is useful for finding what offset and the dns query flags--- which is the hex string you wish to filter for... you may also apply a rate limiter using the same patterns, but with the rate respectively.

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koolholio
Boffin

Re: Caching?

*interjects* You would need a method of applying an address answer limit... but then surely this could also be covered by:

http://tools.ietf.org/html/rfc2827 or http://tools.ietf.org/html/bcp38

it says primarily about forged packets, I assume that would be dns spoofing or even related to cache poisoning? Is there a difference between the two?

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koolholio

Re: Here's a workaround on Windows Server

http://support.microsoft.com/kb/198408 <<< theres some hidden gems within!

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koolholio
WTF?

All relational to root

DNS amplification Is more to do with forwarding queries to root servers than recursive lookups, if you wish to have a look through some whitepapers, although recursive lookups can play a part of it, hopefully you enabled DNS spoofing/DNS cache pollution protection too and spool size to limit queries to an adjustable level?

Rate limitation only works so far given it can be small but many... the counter to this is big but few

What about 3 Mobile's dns resolvers that queries/matches the ip listed in the SOA record and checks that against the A record... and will fail to resolve if one cannot be resolved successfully... as is, with section 2.4.2 of here: http://www.iana.org/procedures/nameserver-requirements.html

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ASA says 'unlimited' broadband can have 'moderate' limits on it

koolholio
Coat

"the watchdog believes punters will expect "moderate restrictions" on broadband traffic even when the service has been advertised as "unlimited"."

When the vast majority of service users dont know their left from their right elbows?

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Spotting a Big Data faker as you set up Big Data for someone

koolholio
Childcatcher

One would assume...

That this model would work, if these three conditions return true...

your contractor has no bias / hangups for whom gets the position and judges purely upon merits AND

big data should be considered a philosophical 'sales term' since... if it is distributed it is, somewhat, modular which forms part of a whole 'architecture' AND

the company is willing to pump in the resources, for what people require to achieve this aim with (this includes trusting your team to do their job properly)...

Some developers, I think are better at coding than others, results will vary depending upon coding style, but you do get incompatibilities between styles, so knowing what resources you have already and what is missing , might perhaps, be best left to a philosopher or even the youth of today (since youth by nature are best at pointing out anomalies)... the downside with that, can be, that it comes with some ego?

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Furious Stephen Fry blasts 'evil' Reg and 'TW*T' Orlowski

koolholio
Joke

Would send a correction in...

But, you would probably disagree.

Since the basis of network packet transmission is on syncronised time, and thus you get timeouts for applications within networks, and the WAN is no exception.

But hey there would go someones tech cred ehy!? ^_^

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Lots more virtualisation, cloud, added to TAFE courses

koolholio
Boffin

A degree in awards anyone?

Configure and manage advanced enterprise virtual computing environment

Monitor and troubleshoot enterprise virtual computing environment

Design and configure enterprise desktop virtualisation

Manage security controls for cloud service deployment

Direct the development of a cloud computing strategy for a business

All of those tasks would probably be worthy of a Noble Award!? no?

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BIGGEST DDoS ATTACK IN HISTORY hammers Spamhaus

koolholio
FAIL

Dave Lee of the BBC - last updated ... 27 March 2013 @ 13:03

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Voda: Brit kids will drown in TIDAL WAVE of FILTH - it's all Ofcom's fault

koolholio
Joke

Knee-jerk

Knee-jerk...

Knee-jerk!

Did I mention the reflexes?

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Stephen Fry explains… Alan Turing's amazing computer

koolholio
Joke

"idiocy just spreads like a bad smell"

Just as Mathmaticians are limited by their limited ability to define infinity...

Best look to physics for the answer! They'll have the same problem.

On a side note what is the root number of squared... anything inbetween is interpretatory.

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SCADA honeypots attract swarm of international hackers

koolholio
Thumb Up

Re: This just in

and be careful to avoid contamination between the two... ;-)

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koolholio
Facepalm

Re: So there are people out there looking for these systems with the tools to do damage.

jumping to a conclusion that it MUST be ex-employees springs to mind... just like the origin of everything bad in the world?

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Dear gov cyber-ninjas, try NOT to KILL PEOPLE. Love from the lawyers

koolholio

Banks and Media Networks

What about them? :-/

The economy needs protecting!

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koolholio
WTF?

"hospitals, dams and nuclear power plants" are out... okay... I'm alrite with that!

What about other power plant types? air traffic systems? maritime systems? mobile systems? satellites (in space) and on the ground (set top box networks?)... internet capable vehicles? even drones? missile systems of not a nuclear ability?

How would one be able to define who and how someone is targetting civilian systems? could a malformed DNS response packet be sufficient?

I reckon this whole cyberwar thing is somewhat, just asking for trouble... :-( *shrugs*

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Researcher sets up illegal 420,000 node botnet for IPv4 internet map

koolholio
Joke

Re: If you wanna be elite...

Call Jeremy Clarkson, he might condone it to find those people!? :-/

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koolholio
Stop

Re: On tracking (etc)

Depends if the information stored in the readme is a herring or the truth? how could one tell the difference? What if its somebody elses information in order to frame them for such? I guess if it said Jeremy Clarkson, there might be motive too! CRAZY! *facepalms*

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Google adds validation to DNSSEC

koolholio
FAIL

That explains

Why wireshark labels it a malformed DNS response. :-/

What about EDNS0? and the billions of other DNS options...

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