Get an IP address out of fail2ban jail

Removes an iptables rule created by fail2ban. This example shows how to remove a rule for an IP from the fail2ban-apache chain. Can be used for any service monitored by fail2ban:

 iptables -D fail2ban-apache -s IP_ADDRESS_TO_SET_BE_FREE -j DROP

or remove from fail2ban-SSH jail:

 iptables -D fail2ban-SSH -s IP_ADDRESS_TO_SET_BE_FREE -j DROP

Resize a VirtualBox hard disk (.VDI) in Linux

I would recommend backing up your current vdi file before doing this!

Run this command in terminal:

VBoxManage modifyhd YOUR_HARD_DISK.vdi --resize SIZE_IN_MB

Example:

VBoxManage modifyhd MyWindows7.vdi --resize 20000

It resizes your hard disk to 20GB. Start your guest machine and resize the partition with your suitable tool. (for example: Gparted for Linux or Windows Partition Manager for windows)

Block a message by a specific email SUBJECT - PLESK

Custom filter rules can be defined in /etc/mail/spamassassin/local.cf, for example:

header CUSTOM_SUPERSPAM Subject =~ /.*spam subject.*/i

describe CUSTOM_SUPERSPAM Superspam messages

score CUSTOM_SUPERSPAM 100.0

The first string defines the match rule. A regular expression is used in 'header' to check the message's subject.
The second string describes the filter.
And the third string defines how much scores should spamassassin set to the matching message.

You can find more info on writing custom rules for spamassassin in Mail::SpamAssassin::Conf manual page:

# man Mail::SpamAssassin::Conf

Source: http://kb.parallels.com/en/1038

Piwik 1.8 and import log

In Piwik 1.8 you can import the raw apache logs into piwik from command line:

%PIWIK-ROOT%/misc/log-analytics/import_logs.py --url=http://YOUR-PIWIK-URL LogFileName.log   --show-progress --idsite=1

mysqldump: Got error: 1044: Access denied for user 'root'@'localhost' to database 'information_schema' when using LOCK TABLES

This error occurs when making MySQL dump:

mysqldump: Got error: 1044: Access denied for user 'root'@'localhost' to database 'information_schema' when using LOCK TABLES 

To solve this problem, add this parameter to mysqldump command:

 --single-transaction

Plesk - Autoresponder in Cron job

This command could be in cronjob for automtic on/off autoresponder:

for activating:

/usr/local/psa/bin/mail  -u YOUR@EMAIL.COM -autostatus true -autoname AUTORESPONSE-NAME -autorsp true


for deactivating:

 /usr/local/psa/bin/mail  -u YOUR@EMAIL.COM -autostatus false -autoname AUTORESPONSE-NAME -autorsp false

Extract a Single Table from a mysqldump File

First, you have to know where in your mysqldump output you want to begin your
extraction, and where you want to end it. For example for extract test1 table:

1 2 3 4 5 6 7 8 9 10 11 12 13

-- -- Table structure for table `test1` -- ... DROP TABLE IF EXISTS `test1`; CREATE TABLE `test1` ( ... LOCK TABLES `test1` WRITE; INSERT INTO `test1` VALUES (1,0,’2 ... UNLOCK TABLES; ... –- –- Table structure for table `test2` –-

As you can see, we have a line with the comment “Table structure for table `test1`”, then all of the dropping, creating, and inserting for the table, and then another comment for the next table. These two lines are perfect for grabbing all of the operations pertinent to our one table.
To extract the dump for a single table from an entire database dump, run the following from a command prompt:

$ awk '/Table structure for table `test1`/,/Table structure for table `test2`/{print}' DBDump.sql > TableDump.sql

The above command searches through the dump file, and as soon as it matches a line containing the first search string (denoted by the first set of slashes), it prints that line and every subsequent line until it encounters a line containing the second search string (denoted by the second set of slashes).

Now the TableDump.sql file contains the SQL to restore your table. One final thing: There are usually various parameters at the top of your mysqldump file that you may need to set before restoring your table, depending on the complexity of your database (i.e. disabling foreign key checks.)

Sendmail - DSN: User unknown

My problem is solved, when I have deleted 127.0.0.1 from the /etc/hosts.

On server must not be a line with 127.0.0.1 in /etc/hosts file.

Apache ModSecurity - IP Whitelist

Add this rule to ModSecurity rules:

SecRule REMOTE_ADDR "^192\.168\.2\.15$" phase:1,nolog,allow,ctl:ruleEngine=off

It means the IP 192.168.2.15 will be ignored by ModSecurity.

Don't forget to restart Apache after adding new rule.

KnowledgeTree and PHP 5.3

The KnowledgeTree doesn't work with new PHP versions. We got always deprcated and warning messages.

You should edit the file config/dmsDefaults.php (under KnowledgTree folder) and find these lines:

error_reporting(E_ALL & ~E_NOTICE);
ini_set('display_errors', '1');
ini_set('display_startup_errors', '1');

add this line below those:

error_reporting(0) ;

Source: http://tpokorra.blogspot.de/2011/03/knowledge-tree-and-php-533.html

Install subversion 1.6 under Lenny

Add this source to /etc/apt/sources.list

deb http://archive.debian.org/debian-backports lenny-backports main contrib non-free


then run:

apt-get update

and finally:


apt-get -t lenny-backports install --reinstall subversion

Create a self-signed SSL Certificate

1. Generating a private key:

openssl genrsa -des3 -out www.domain.com.key 2048 (with password)

openssl genrsa  -out www.domain.com.key 2048 (without password)

2. Generating Certificate Signing Request (CSR):

openssl req -new -key www.domain.com.key -out www.domain.com.csr

give your informations:

Country Name (2 letter code) [GB]:DE

State or Province Name (full name) [Berkshire]:Hessen  

Locality Name (eg, city) [Newbury]:Wiesbaden  

Organization Name (eg, company) [My Company Ltd]: Your Company Ltd 

Organizational Unit Name (eg, section) []:IT  

Common Name (eg, your name or your server's hostname) []:www.domain.com  

Email Address []:admin@domain.com  

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []: 

3. Generating a Self-Signed Certificate

openssl x509 -req -days 365 -in www.domain.com.csr -signkey www.domain.com.key  -out www.domain.com.crt

4. Installing the Private key and Certificate in Apache configuration file:

SSLEngine On

SSLCertificateFile www.domain.com.crt

SSLCertificateKeyFile www.domain.com.key

5. Restart Apache Service

/etc/init.d/apache2 restart

 

Allow from IP without password prompt, and also allow from any address with password prompt

You should write in .htaccess as follows:

Order deny,allow
Deny from all
AuthName "htaccess password prompt"
AuthUserFile /Path-to-Your-Password-File/.htpasswd
AuthType Basic
Require valid-user
#Your Allowed IP Here:
Allow from XXX.XXX.XXX.XXX
Satisfy Any