Notepad ~Angky R~ » 2008 » June

Happy Birthday, Dear DNS

IT No Comments

Twenty five years ago Monday, two computer scientists at the University of Southern California created a key component essential to the modern Internet.

Jon Postel and Paul Mockapetris ran the first successful test of the automated domain name system, or DNS, which allows computers to find each other on the network and send information back and forth to each other without having humans manually look up the addresses of each machine.

The concept sounds simple now, but it was revolutionary 25 years ago. “Just like the white pages, you had to look up” the addresses of computers to exchange information, said Joe Touch, director of the Postel Center for Experimental Networking. “The telephone book got too heavy and too old too fast.” The innovation was “like calling 411.”

The anniversary of the event will go mostly unnoticed Monday, but the scientists at USC’s Information Sciences Institute will celebrate with a private champagne popping at the Postel Center.

DNS remains almost exactly as it was 25 years ago, and the system should be able to expand along with the Internet for the foreseeable future, said Mockapetris. The next big enhancement will be to make it more secure.

“The system was built to expand but not necessarily to be secure,” said Herbert Schorr, executive director of the Information Sciences Institute. The fundamental information to make the whole thing work, for example, still lives on just 12 so-called root servers. “It can be brought down. You have to be technically proficient, but there are enough people who can do it,” Schorr said.

Schorr said the most likely miscreant won’t be a spike-haired hacker. More likely, it will be “blocks of office buildings in a foreign capital somewhere,” he said.

Article from: wired

Thanks,
~Angky R~

FreeBSD Update Software and Apply Security Patches

FreeBSD No Comments

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Tulisan ini hanya untuk kalangan sendiri dan sangat bermanfaat bagi penulis atau mungkin (juga) berguna juga bagi pembaca
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Ada kalanya kita butuh untuk update software mengingat akan bugs dan patch security, atau seditaknya kita mengikuti perkembangan software yang kita pakai. Kalo keluarga RH aka FC kan punya yum, debian base punya apt-get, dan mungkin masih2 distro Linux punya sendiri2 untuk update software aka aplikasi, nah gimana dengan FreeBSD? Nah inilah caranya………:

Required tools aka software

Ada beberapa tools yang diperlukan, antara lain
(a) portmanager – utility untuk update ports.
(b) portsnap -  fetch and extract compressed snapshots of the ports tree (sudah ada di versi > 6.0, jadi ngak usah di install lagi).
(c) pkg_version – utility untuk melihat versi software aka aplikasi yang sudah terinstall.

FreeBSD install portmanager

# pkg_add -r portmanager

Upgrade FreeBSD ports collection

# portsnap fetch extract

Display outdated ports list

# pkg_version -vIL=

Update FreeBSD packages / software

# portmanager -u

Jika ingin meng-upgrade langsung semua software, command nya berikut

# portmanager -u -l

How do I upgrade a single software only?

# portmanager www/apache22 -l -u -f

How do I apply binary security updates for FreeBSD?


Fetch updates

# freebsd-update fetch

Install updates

# freebsd-update install

Rollback update

# freebsd-update rollback

Reboot system

Selesai sudah deh…silahken check systemnya, apa sudah semuanya terupdate…..Semoga tulisan ini berguna….Amiiin

Referensi:

Thanks,

Angky R