Memilih Serifikat SSL

Kalau berkunjung ke situs-situs yang menjual serifikat SSL, akan dibuat bingung, mana SSL yang harus dibeli. Sebelum membeli SSL, coba cek SSL yangs udah dipakai selama ini. Misal untuk server siren, simonev, insentif, surat, dan webmail. Rata-rata menggunakan GeoTrust DV SSL CA. Ada juga yang pakai RapidSSL CA. Ada 3 macam GeoTrust DV SSL CA, yaitu GeoTrust DV SSL CA dan GeoTrust DV SSL CA - G3, dan GeoTrust DV SSL CA - G4. Saya sendiri tidak tahu persis perbedaaannya. Apakah ada hubungan dengan tahun release-nya.

How To Install Linux, Apache, MySQL, PHP (LAMP) stack on Debian on VM

How To Install Linux, Apache, MySQL, PHP (LAMP) stack on Debian

To install apache, open terminal and type in these commands:
# apt-get install apache2

To install MySQL, open terminal and type in these commands:
# apt-get install mysql-server

Apache2 Unable to correct problems, you have held broken packages

Cek versi Debiannya
root@risetpro:~# uname --all
Linux risetpro 3.2.0-4-amd64 #1 SMP Debian 3.2.68-1+deb7u6 x86_64 GNU/Linux

Coba install Apache2
root@risetpro:/etc/apt# apt-get install apache2
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

There is no public key available for the following key IDs

Mengatasi masalah public key saat melakukan update paket di debian

root@risetpro:/etc/apt# apt-get update
Hit http://kambing.ui.ac.id squeeze Release.gpg
Hit http://kambing.ui.ac.id squeeze-updates Release.gpg
Hit http://kambing.ui.ac.id squeeze/updates Release.gpg
Hit http://kambing.ui.ac.id squeeze Release
Hit http://kambing.ui.ac.id squeeze-updates Release
Hit http://kambing.ui.ac.id squeeze/updates Release
Hit http://kambing.ui.ac.id squeeze/main amd64 Packages
Hit http://kambing.ui.ac.id squeeze/contrib amd64 Packages
Hit http://kambing.ui.ac.id squeeze/non-free amd64 Packages
Hit http://kambing.ui.ac.id squeeze-updates/main amd64 Packages
Hit http://kambing.ui.ac.id squeeze-updates/contrib amd64 Packages
Hit http://kambing.ui.ac.id squeeze-updates/non-free amd64 Packages
Hit http://kambing.ui.ac.id squeeze/updates/main amd64 Packages
Hit http://kambing.ui.ac.id squeeze/updates/contrib amd64 Packages
Hit http://kambing.ui.ac.id squeeze/updates/non-free amd64 Packages
Ign http://kambing.ui.ac.id squeeze-updates/contrib Translation-en_US
Ign http://kambing.ui.ac.id squeeze-updates/contrib Translation-en
Ign http://kambing.ui.ac.id squeeze-updates/main Translation-en_US
Ign http://kambing.ui.ac.id squeeze-updates/main Translation-en
Ign http://kambing.ui.ac.id squeeze-updates/non-free Translation-en_US
Ign http://kambing.ui.ac.id squeeze-updates/non-free Translation-en
Ign http://kambing.ui.ac.id squeeze/updates/contrib Translation-en_US
Ign http://kambing.ui.ac.id squeeze/updates/contrib Translation-en
Ign http://kambing.ui.ac.id squeeze/updates/main Translation-en_US
Ign http://kambing.ui.ac.id squeeze/updates/main Translation-en
Ign http://kambing.ui.ac.id squeeze/updates/non-free Translation-en_US
Ign http://kambing.ui.ac.id squeeze/updates/non-free Translation-en
Hit http://security.debian.org wheezy/updates Release.gpg
Hit http://security.debian.org wheezy/updates Release
Hit http://security.debian.org wheezy/updates/main Sources
Hit http://security.debian.org wheezy/updates/contrib Sources
Hit http://security.debian.org wheezy/updates/main amd64 Packages
Hit http://security.debian.org wheezy/updates/contrib amd64 Packages
Hit http://security.debian.org wheezy/updates/contrib Translation-en
Hit http://security.debian.org wheezy/updates/main Translation-en
Reading package lists... Done
W: There is no public key available for the following key IDs:
9D6D8F6BC857C906