Author Archives: administrator

uninstall syslog-ng linux

sudo apt-get purge --auto-remove syslog-ng

PHP Redirect – Header Location

PHP Redirect – Header Location

header( “location: http://surin.reru.ac.th” );
exit(0);
?>

PHP Redirect – Header Refresh

<?
header( ”refresh: 2; url=/url” );
exit(0);
?>

New SSL Ubuntu Server

What the Red Means

The lines that the user needs to enter or customize will be in red in this tutorial! The rest should mostly be copy-and-pastable.

About SSL Certificates

A SSL certificate is a way to encrypt a site’s information and create a more secure connection. Additionally, the certificate can show the virtual private server’s identification information to site visitors. Certificate Authorities can issue SSL certificates that verify the server’s details while a self-signed certificate has no 3rd party corroboration.

Set Up

The steps in this tutorial require the user to have root privileges on the VPS. You can see how to set that up here in steps 3 and 4.

Additionally, you need to have apache already installed and running on your virtual server. If this is not the case, you can download it with this command:

sudo apt-get install apache2

Step One—Activate the SSL Module

The next step is to enable SSL on the droplet.

sudo a2enmod ssl
 Continue reading →

Set / Change / Reset the MySQL root password on Ubuntu Linux

Stop the MySQL Server.
```
#sudo /etc/init.d/mysql stop
```

Start the mysqld configuration.
```
#sudo mysqld --skip-grant-tables &
```

Change Date and Time on Ubuntu Server command

chack date tim

#date

Sample output:

Tue Oct 20 09:33:13 PDT 2015

To display calendar, use cal command:

#cal

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How do I block specific incoming ip address?

Following iptable rule will drop incoming connection from host/IP 202.54.20.22:

#iptables -A INPUT -s 202.54.20.22 -j DROP

# iptables -A OUTPUT -d 202.54.20.22 -j DROP

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Turn the firewall on or off

Allow or block specific network activity

# sudo ufw enable

# sudo ufw disable

allow SSH connections

# sudo ufw allow ssh

#sudo ufw block ssh

allow connections on port 53

#sudo ufw allow 53

#sudo ufw block 53

List current firewall rules and stop firewall (old method)

# sudo iptables -L -n

and

#sudo ufw status verbose

Enable IP Forwarding on Ubuntu

Edit the /etc/sysctl.conf file:

$ sudo nano /etc/sysctl.conf 

Find the following text:

# Uncomment the next line to enable packet forwarding for IPv4
#net.ipv4.ip_forward=1

Uncomment the net.ipv4.ip_forward=1 line:

 Continue reading →

How to install freeradius Ubuntu

apt-get update
apt-get upgrade

 sudo apt-get install freeradius freeradius-mysql apache2 php5 libapache2-mod-php5 mysql-server mysql-client php5-mysql

Ubuntu 14.04 install freeradius

# sudo sudo apt-get install freeradius freeradius-utils freeradius-mysql

Surin

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