How can I detect if my website is vulnerable to POODLE?
You can use Nmap to check if your site is vulnerable to POODLE by supporting SSLv3.
nmap --script ssl-enum-ciphers -p 443 ghost2.eu.saecas.com
If it is and you are running Apache you can disable SSLv3 in your virtual host by add the line
SSLProtocol All -SSLv2 -SSLv3
For more information and Nginx and other services please see http://askubuntu.com/questions/537196/how-do-i-patch-workaround-sslv3-poodle-vulnerability-cve-2014-3566.
Why does the Chrome browser on Debian/Ubuntu not display Chinese characters, e.g. on Baidu.com?
Install these fonts packages and try to access the site again.
sudo apt-get install fonts-arphic-ukai fonts-arphic-uming
For other Linux distributions, Japanese, Korean, Vietnamese, and Windows or OS X, please check http://en.wikipedia.org/wiki/Help:Multilingual_support_(East_Asian).
After entering the wrong MySQL password I receive the message “ERROR 1129 (HY000): Host is blocked because of many connection errors; unblock with ‘mysqladmin flush-hosts'” and can no longer log in, what can I do?
Connect to MySQL from another host and run the SQL command “flush hosts”. If you have phpMyAdmin installed on the MySQL server you can also connect from your current host, the connection will be seen as coming from localhost.
If gam (the Google Apps Manager) on Debian shows an error like
NotImplementedError: PKCS12 format is not supported by the PyCrpto library. Try converting to a “PEM” (openssl pkcs12 -in xxxxx.p12 -nodes -nocerts > privatekey.pem) or using PyOpenSSL if native code is an option.
you are probably missing the python openssl package. Install it with
sudo apt-get install python-openssl
For Python 3 you will need python3-openssl instead.
Pro Git seems to be an alright book, but personally I found Ry’s Git Tutorial online tutorial to be the best resource for learning git.
When you create a new key pair in Amazon Webs Services (AWS) you only have the RSA private key in a .pem file.
To create a public key use this command
ssh-keygen -y -f <yourprivatekey.pem> > yourpublickey.pub
This will create the file yourpublickey.pub containing the public key in your current folder.