Archive for the Category » võrgustiku «

Monday, October 29th, 2012 | Autor:

Selgub, et, aastal lõpmatu tarkus, Google on turvaelement, mis võib blokeerida rakenduse juurdepääsu või kasutades oma Google kontot. Ma näen, kuidas see võib probleem olla Google'i kasutajad, eelkõige nende Gtalk ja Gmail kasutajad. Minu puhul oli see Pidžin võttes küsimus Vadin teenus (mis on tehniliselt osa Gtalk). Ma leidsin lahenduse pärast vähe kaevamine. Ma olin üllatunud, kui vana teema oli ja kui kaua see funktsioon on olemas!

Avamiseks konto ja saada oma taotlus online, kasutate Google'i Captcha leht siin.

osa
Thursday, June 03rd, 2010 | Autor:

Why I’ve left MTN

So I’ve been shopping around in a non-serious fashion in the last few months trying to figure out how best to leave MTN and how get the best deal for me. I don’t like MTN since I became anirate“, as I might call such a customer in the ISP industry. MTN’s Customer-Service Call Centre had rarely been helpful or knowledgeable on their own systems. The final straw however was when their systems let me screw myself over and Customer Service was as helpful as a dead redshirt:

I had a billing issue where, admittedly, it started of my own fault. MTN has a feature where you can call in to find out the amount owing on your account. Only, as Murphy would have it, this amount was ei the amount owing on the account but the last amount that was billed.

So one month my account was about R900. I called the number, mis-heard R500, paid the amount I thought I should: R500. 15 days later MTN suspended my account. No wrong done, right? Wrong.

First off, I received no notification of any kind. An sms would make the most sense, especially since it would cost MTN almost no resources: “Your account xyz is in arrears by R400. Please contact blah blah blah”. They could phone me, they could email me, something, but nothing of the sort happened. Suspend without Prejudice. Thats the best way to get the customer’s attention!

Now, not only could I not make calls and sms’s, I could not receive calls or sms’s. Further, I could not even call MTN’s toll free phone number. I had to use someone else’s phone to get to the bottom of the problem. After two days of haggling I finally found a lady kind enough to re-enable the account. Ten days later my salary goes in, I call the same number and hear a number close toR900”. I think to myself maybe I should double-check juuuust in case I mis-heard. I call again, I hear the same number again. Right. Pay the R900. Fifteen days later, my phone is suspended AGAIN. WTH?

Remember what I mentioned earlier?: “this amount was ei the amount owing on the account but the last amount that was billed.” So, in spite of the fact that the voice prompt specifically saysPress 3 for Balance Due; [Presses 3] ; The Total Outstanding Balance is; Nine; hundred; ja; #whatever ; Rands; ja; #whatever; cents”, I actually owed them R900 plus the R400 that I’d paid short the previous month. No, I do not know if MTN has fixed this. I no longer care. Since I figured this out I started waiting for paper statements to see how much was actually due. Interestingly, their paper statements were also wrong. Only they had the opposite problem: “This invoice: R1300in spite of the fact that on the next page it says opening balanceR400”, closing balanceR1300”. Pah! Is it fixed? Again, I don’t care.

I let them know I wasn’t renewing the contract and I’ve now already ported my number away to Virgin Mobile. Because I want to keep my number and port it elsewhere, the store said I could not putunsatisfactory serviceas the reason for ending the contract but that it should simply sayporting”. Apparently by putting anything else there they might notnoticethat I want it ported. WTF.

What next? (without MTN)

In my research I’ve found that contractdealsare most popular. Typically, you can get a R8000 phone for R800 per month over 24 months with R500-odd worth of airtime per month. This amounts to you paying R19 200 over a 24-month period for a phone worth R8000 which will be obsolete within 12 kuu. You will get some airtime every month so you might feel its not a complete loss. However you should also remember that it costs the cellular companies nothing when you make those phone calls. Kasum.

There’s a better way

There are much cheaper contracts, contracts for between R50 and R200 which include cheapish phonesphones that work damned well as a phone but won’t let you play games on the train. Most of these contracts actually give you the same airtime value (sometimes more!) as what you are paying. So for R100 you might get R100 worth of airtime plus some free sms’s, and a cheapish phone. The best deals I’ve seen recently have all been for the Samsung STAR, an understated but good cell phone, available from a number of retailers for between R100 and R200 per month. In most cases the deals have included the full amount of airtime. Virgin Mobile has probably the best example here: The cost is R199 per month which includes R200 in airtime and 1000 sms’s (jah, you read that rightone thousand!).

Virginal Service All the Way!

Another reason I’ve gone with Virgin Mobile is a little something no other service provider does: AmixedContract/Prepaid facility. I get R200 in airtime however, if I go over that, the extra just gets added to my invoice. With MTN this could go sky high without the option of a limit! With Virgin, because I asked, it has a limit of R300. Aga, I can still add prepaid airtime (with cellphone banking, nogal). No other service provider lets you do this!

Remember that R8000 cell phone I mentioned earlier? My plan is to get the Samsung STAR and spend less than R300 per month. I’ll have saved enough money to actually go and buy a more expensive phone (or laptop) with the cash I’ll have saved! Muidugi, if you actually use that R800-worth of phone calls, I guess the best available deal is where you spend the R19200 anyway. Maybe at least with a more critical view on your choices you’ll save yourself a good amount of money in future. Good luck in your search for your best deal!

osa
Pühapäev, 26. aprill, 2009 | Autor:

Usu mind. Me veel tegelevad regexes – ainult ringteel (ja ähmaselt praktiline) viis. See on päris põhjalik loetelu, kuidas edasi minna õhetus DNS vahemälu kasutamise ajal regexes et näidata, kus sarnaste meetoditega kõrvale.

Miks me tahame selge DNS vahemälu täpselt?

Seal on mitmeid põhjuseid, selge DNS puhverdab, kuigi ma usun, et need on kõige levinumad:

  • An intranet teenus on privsõi (sise-) IP aadress, kui ettevõtte võrku, kuid see on avalik IP aadress väljaspool juurdepääs. Kui püüad pääseda, et mujalt kui pärast juurdepääsemiseks seest, seal on võimalus, et teil oleks puhverdatud era (kättesaamatuks) IP. Hea pikaajaline lahendus on teha teenus kättesaamatuks, välja arvatud kaudu VPN. Lihtsam lahendus on jätta töö tööl. 😛
  • Interneti-teenuse või veebilehe muudab oma DNS seaded ja oma töölaua / laptop otsib “vana” seadistus. Sel juhul, Uus seade ei ole veel paljundatud. Hosting Admins kohanud sel juhul väga tihti.
  • Privaatsus: Kui keegi saab jälgida oma DNS ajalugu siis see ei oleks liiga raske aru saada, mida veebisaidid olete olnud vaatamise. Kuigi üksikuid lehti olete vaadatud jälgida ei saa sel viisil, hostinimedeks, näiteks “dogma.swiftspirit.co.za” või “google.com” toimub DNS vahemälu, tõenäoline, et sa esimene külastatud iga ala. On paremaid viise seda teha küll. Üks näide on kasutada Tor võrgu kõigi DNS pöördumist.

Flushing Windows’ DNS vahemälu, käsureale:

Uurimistulemused näitavad, et enne Windows 2000, Windows OS ei cache DNS tulemused. The ipconfig käsk, käivitada käsurealt, anti mõned üle DNS vahemälu ja on püsinud enam-vähem sama, kuna.

Et saada kiiret, kui kasutate Vaata mitte-Admin: Start -> Programmid -> Accessories -> Paremklõpsake “Command Prompt” -> Käivita administraatorina

Vastasel juhul: Start -> R-> [cmd ] -> [ OK ]

ipconfig / flushdns

Flush the DNS Resolver Cache in Windows

Samuti on võimalik vahemälu Windows poolt taaskäivitamist the “DNS Client” või “Dnscache” teenus.

Flushing Mac OS X DNS vahemälu, alates käsurealt:

Alates Mac OS X, Apple Macs käinud Unix-põhiste, POSIX-Vastavuses, operatsioonisüsteem põhineb NextStep, ise algselt sisaldav kood FreeBSD ja NetBSD. Mac OS X kasutab lookupd või dscacheutil hallata DNS vahemälu, sõltuvalt versiooni.

Et saada kiiret: Taotlused -> Utilities -> Terminal

(lookupd|dscacheutil) -flushcache

Mis meil siin on? Nagu iga osa 1, the püstkriips näitab, et kas “lookupd” OR “dscacheutil” on vastuvõetav. The Sulgudes näitavad, et püstkriips kohaldatakse üksnes “lookupd|dscacheutil” osa ekspressiooni. Seega, the ” -flushcache” ei ole kohustuslik ja tuleb lisada käsk, et see töö. Pange tähele, et need käsud ei tooda väljundit, kui ei ole viga.

Kasutage dscacheutil kui te kasutate Mac OS X 10.5 (Leopard) või hiljem.

Mac OS X:

lookupd -flushcache

Mac OS X Leopard:

dscacheutil -flushcache

Use dscacheutil to flush the cache in Mac OS X Leopard

On ka GUI tööriist, DNS loputaja, mis kasutab automaatselt õige käsk saadaval.

Flushing Linux / Unix’ DNS vahemälu, alates käsurealt:

N.B. Kui sul ei ole veel kas bind (koos vahemällu lookup lubatud), nscd, või dnsmasq installitud ja töötab oma * nix-põhise töölaua / server, olete ilmselt ei vahemällu DNS üldse ja miski ei loputage. Sellisel juhul teid kasutades oma DNS server iga web taotluse, ilmselt aeglustub teie web kogemus. * Kui jah, Ma soovitan vähemalt paigaldamist nscd, kuna see on kõige lihtsam luua. **

Flushing nscd vahemälu

Nagu Mac OS käsk, see toodab mingit toodangut kui ei ole viga:

(|sudo )(|/usr / sbin /)nscd -i hosts
  • Kasutamine sudo kui sa ei ole juba juur muidu esimene valik on tühi.
  • Täpsustada / usr / sbin / kui nscd ei ole juba jooksul “tee”. Kui teie jaotus on nscd kummaline koht, leida see esimene:
leida r bin / nscd $

Pange tähele, et ülaltoodud “bin / nscd $” ise regulaaravaldise. 🙂

Kasutades nscd, kehtetuks “hosts” vahemälu, sisse loginud kasutaja:
sudo nscd -i hosts
Kasutades nscd, kehtetuks “hosts” vahemälu, root:
nscd -i hosts
Kasutades nscd, kehtetuks “hosts” vahemälu, root, täpsustades täielik tee:
/usr / sbin / nscd -i hosts

Flushing seovad vahemälu

Masti seovad vahemälu, me anda käsku kaudu rndc. Kasutage sudo kui te ei ole juba root:

(|sudo )rndc masti

Taaskäivitamine cacheing teenuseid töötab ka!

Siin on, kuidas taaskäivitada kas vahemällu deemonid:

(|sudo )(teenus |/etc /(rc  .D|rc  .D / init  .D|init  .D)/)(bind|dnsmasq|nscd) restart

See on hakanud saada raske lugeda. *** Õnneks olen üksikasjalikult selgitatud:

  • Nagu eelmise käsu, kasutada sudo kui sa ei ole juba root.
  • Teine valik on esimene valik “teenus “. See kehtib peamiselt Red Hat / CentOS ja Fedora süsteemid.
  • The “/etc /(rc .D|rc .D / init .D|init .D)/” Laiendada tuleb veelgi. See on enamike teiste süsteemide. Üldiselt, rc.d on, kui te kasutate BSD-stiilis init süsteemi (näiteks: Arch Linux, FreeBSD, või OpenBSD). Parim viis kindlalt teada, mis käsk kasutada on "leida’ õige nscd või dnsmasq tee. Enamik Unix maitsed, isegi Solaris, kasuta nscd:
leida r  .d / nscd $ ; leida r  .d / dnsmasq $ ; leida r  .d / rndc $
  • Viimane valik on vahel “bind”, “nscd”, ja “dnsmasq”. See sõltub täielikult, mis on paigaldatud ja kasutuses.
  • Viimane struktuuris, ” restart”, on õpetuse deemon kontrolli skript.

Kaar, kasutades dnsmasq, taaskäivitamist cache deemon, root:

/etc / rc.d / dnsmasq restart

Kaar, kasutades nscd, taaskäivitamist cache deemon, sisse loginud kasutaja:

sudo /etc/rc.d/nscd restart

CentOS / Red Hat, kasutades nscd, taaskäivitamist deemon, root:

teenust nscd restart

nscdrestart

Loputage Mozilla Firefox sisemise DNS vahemälu:

Mozilla Firefox hoiab oma DNS cache täitmiseks. Firefox 2 oleks cache ainult 20 kirjed kuni 60 sekundit. Vaikesäte nagu Firefox 3 näib olevat 512 kirjed kuni 60 minutil tundub palju mõistlikum igapäevaseks sirvimine. Kui töölaual on sisseehitatud vahemälu (mis kõige nüüd teha) siis cache siin on tegelikult üleliigne. Ma ei tea ühtegi teiste brauseritega, et rakendada DNS vahemälu.

Ma leidsin mõned lahendused, kui sa pead vahemälu. Tundub, et on palju võimalusi seda teha, kuid ka see on kõige lihtsam, mis ma olen panna eelistuse järjekorras.:

  1. Paigaldage Firefox DNS loputaja Addon – annab nupu masti vahemälu.
  2. Paigaldage DNS vahemälu Addon – annab toggle, mis keelab või lubab DNS vahemälu.
  3. Tühjenda vahemälu (puhastab brauseri vahemälu samuti DNS Cache): Valige Tools -> Selge Private aeg; Tühistada kõik linnukesed va Caet; Klõpsake [ Selge Private Data Now ].
  4. Käsitsi teha, mida DNS Cache ei: määrake järgmised 2 umbes:config valikud “network.dnsCacheExpiration” ja “network.dnsCacheEntries” kuni 0 ja siis tagasi default.

Mul oli halb puhverdatud rekord ja ma kustutasin brauseri vahemälu. Aga tema ikka annab mulle vale info. Mis annab?

Sest kuidas DNS paljundamine tööd, sa soovitavalt vaja valada DNS kõik DNS vägede vahel ennast ja “autoriteetne” vastuvõtva, alustades vastuvõtva lähim autoriteetne vastuvõtva (kaugemal oma brauseri).

Nagu näiteks, kui sul on ruuter, mis on vahemällu DNS, reset ruuteri cache enne uut DNS cache opsüsteemi, ja ainult siis peaks te vahemälu Firefox. Põhjuseks on see, et isegi kui sul on ainult kustutada oma OS ja Firefoxi vahemälu, töölaual on ikka küsin ruuteri oma halb rekord niikuinii.

Mis siis, kui mu DNS server on server net väljaspool minu kontrolli?

Võid proovida ajutiselt kasutada teist nimeserverite, isegi avalikult avatud server. OpenDNS näitab mõned head informatsiooni selle kohta, kuidas seda teha. Kui soovite, Sa peaksid olema võimalik saada asjakohast teavet oma ISP seoses nende lahendamiseks DNS servereid. Kohalik näide (Lõuna-Aafrika Vabariik) on Saix mis nimekirjad nende lahendamine DNS serverite.

* Tõenäoline põhjus, miks Firefox on DNS vahemälu sisseehitatud ****
** “((pacman|jogurt) -S|tekkima|(yum|aptitude|apt-get) paigaldada) nscd” ning seejärel tagada, et teenuse lisatakse käivitusskriptid. Vaadake oma distributsiooni paigaldus dokumendid.
*** Otsin süntaksi esiletõstmise plugina, mis suudab töötada avaldis
**** Olen lugenud avaldusi, et taaskäivitamine võrk(se|) teenust ka puhastab DNS cache aga ma ei ole näinud ühtegi tõendit, et see on tõsi. Kui kellelgi on näiteks juhul, kui see on tõsi, palun anda mulle üksikasjad.
osa
Pühapäev, April 19th, 2009 | Autor:

I think the Internet is a scary place. Jah, me. Some days I find myself horrified to find the lowliest of criminal bastards trying to steal our livelihoods.

Jah, people, there are criminals out there and they want your money or they want to use you to make money. What’s even more scary is the lengths to which they are willing to go, even risking YOU. Do not pass Go. Do not collect $200.

I received an email saying that I was being offered a job as aRegional Assistant” ja, though the details weren’t given, the email suggested that it was a legitimate opportunity. I replied asking about where they’d received my details and also about what they would require of me.

Being the skeptic I am, I thought I could spot scammers a mile away. How fortunate that I can still laugh at the idea.

A few hours later, they replied indicating that I’d soon receive further instructions. They’dprobablybeen referred to me by a friend and they had a pile of referrals and so couldn’t specify which friend had recommended me. I waited patiently and left it to the back of my mind. “They’ve probably found a good candidate already and I’ve lost out”, I thought. “How nice that a friend might refer me. Obviously I’m Awesome.” (and daft :-/)

So later on, I receive my email with myfurther instructions”. This is where I finally realised that I was dealing with scammers:

Hi. We’d like to start a trial task. Our customer will make a bank transfer to you this week. Please go to our site <site omitted> to submit the banking details where the transfer will go to. Once we’ve established a good transaction history, you will receive between 2-3 transfers per week (amounts of about R10 000 each except the first trial transfers).
Please confirm that you can start. We don’t send any transfers to your account until we receive confirmation from you.
On Monday you will receive notification, detailed information and instructions regarding the transfers. Thank you and have a lovely weekend.

Say what??? I checked out the web site in question and, without a doubt, this is a money laundering scheme done by professionals. They know what they’re doing and they probably launder millions every month. What’s more is that, inevitably, they will screw you over and get the cops to arrest YOU. These criminals can leave evidence behind implicating you even if all you’ve done is diligently moved money from one place to anotherand kept a small percentage for yourself. 😛

Money laundering is where illegitimate money (stolen, probably) is transferred via third parties to appear more legitimate. You’re an accessory to the crime and, even worse, you’re even likely to be the victim of it. Recognise when an opportunity is too good to be true. I was fooled for a short while. Next up, given that a victim might give out a lot of personal details, the scammers might steal your identity and start to implicate you in fraudulent activities without you ever having done a thing.

If you happen to have already given any details such as the above where they wanted my banking details, contact your bank and inform them of the situation. They will give you the best possible advice on what to do next. If you’ve already responded to the mail but haven’t yet already given them the information they want, don’t reply any further. I’d also suggest calling your local police for further advice.

osa
Tuesday, March 31st, 2009 | Autor:

For those who don’t yet know what its about!

[youtube]http://www.youtube.com/watch?v=ddO9idmax0o[/youtube]

And then we get to make fun of it too!

[youtube]http://www.youtube.com/watch?v=PN2HAroA12w[/youtube]

Oh ‘n I figured out how to add videos painlessly. W00T

osa