Testing Throughput of Gateway/CPE with Jperf

Step 1: Setup Two PCs connected with your DUT (device under test), in this case your CPE.

PC1 is attached to LAN side and PC2 attached on WAN side

Step 2: Assign addresses to devices.

LAN side PC, PC1 will get the address from the DHCP server insed the DUT.
configure the stative IPs on

PC2: 10.10.10.100
WAN side of DUT 10.10.10.10

Step 3: Check and confirm the connectivity by pinging PC2 from PC1

Step 4: Run the Jperf Application on PC1 and PC2

PC2 will act as server, click the server option and run it

PC1 will act as client, enter the IP of server, 10.10.10.100 and run it.

You will see the LAN-WAN throtuput of your device.

References
http://code.google.com/p/xjperf/
http://openmaniak.com/iperf.php
http://www.smallnetbuilder.com/content/view/30408/235/
http://www.smallnetbuilder.com/content/view/30418/235/
http://www.smallnetbuilder.com/content/view/30388/235/

Network Monitoring using Nagios on Debian

Step 1: Installation of Nagios


nagios:/etc/nagios#apt-get install nagios-text

Step 2: Configuration

EDIT /etc/nagios/contacts.cfg AND ADD FOLLOWING

define contact{
contact_name imran
alias imran
service_notification_period 24x7
host_notification_period 24x7
service_notification_options w,u,c,r
host_notification_options d,u,r
service_notification_commands notify-by-email
host_notification_commands host-notify-by-email
email imran@fizaan.com
}
EDIT /etc/nagios/contactgroups.cfg AND ADD FOLLOWING
define contactgroup{
contactgroup_name server-admin
alias Systems Administrators
members imran
}

EDIT /etc/nagios/hosts.cfg AND ADD YOUR HOSTS WHICH YOU WANT TO MONITOR
define host{
use generic-host
host_name www.fizaan.com
alias website
address 192.168.0.10
check_command check-host-alive
max_check_attempts 20
notification_interval 240
notification_period 24x7
notification_options d,u,r
}
define host{
use generic-host
host_name mail.fizaan.com
alias mail
address 192.168.0.20
check_command check-host-alive
max_check_attempts 20
notification_interval 240
notification_period 24x7
notification_options d,u,r
}
EDIT /etc/nagios/hostgroups.cfg AND ADD FOLLOWING

define hostgroup{
hostgroup_name Linux Servers
alias Servers
contact_groups server-admin
members www.fizaan.com,mail.fizaan.com
}

EDIT /etc/nagios/services AND ADD YOUR SERVICES, e.g
You cand define more than 1 service for each host.

# Service definition
define service{
use generic-service ; Name of service template to use

host_name mail.FIZAAN.com
service_description Total Processes
is_volatile 0
check_period 24x7
max_check_attempts 3
normal_check_interval 5
retry_check_interval 2
contact_groups server-admin
notification_interval 240
notification_period 24x7
notification_options w,u,c,r
check_command check_procs!150!200!RSZDT
}
# Service definition
define service{
use generic-service ; Name of service template to use

host_name www.fizaan.com
service_description HTTP
is_volatile 0
check_period 24x7
max_check_attempts 3
normal_check_interval 5
retry_check_interval 1
contact_groups server-admin
notification_interval 120
notification_period 24x7
notification_options w,u,c,r
check_command check_http
}

Step 3: Check the syntex error, if every thing ok, it will show following.

nagios:/etc/nagios# nagios -v /etc/nagios/nagios.cfg
.
.
Total Warnings: 0
Total Errors: 0

Things look okay - No serious problems were detected during the pre-flight check

Step 4: Restart the Nagios


nagios:/etc/nagios#/etc/init.d/nagios restart

Step 5: Open the Site and login

http://192.168.0.5/nagios/
or
http://nagios.fizaan.com/nagios/

username: nagiosadmin
password: provided during installation


Pluging Directory

Following are default plugins installed with Nagios.
nagios:/usr/lib/nagios# cd plugins/
nagios:/usr/lib/nagios/plugins# ls
check_apt check_file_age check_imap check_mrtgtraf check_oracle check_simap check_ups
check_breeze check_flexlm check-imap check_mysql check_overcr check_smtp check_users
check_by_ssh check_fping check_ircd check_mysql_query check_pgsql check_snmp check_wave
check_clamd check_ftp check_jabber check_nagios check_ping check_spop eventhandlers
check_dhcp check_game check_ldap check_nagios_db check_pop check_ssh negate
check_dig check_hpjd check_ldaps check_nntp check_procs check_ssmtp urlize
check_disk check_http check_load check_nntps check_radius check_swap utils.pm
check_disk_smb check_icmp check_log check_nt check_real check_tcp utils.sh
check_dns check_ifoperstatus check_mailq check_ntp check_rpc check_time
check_dummy check_ifstatus check_mrtg check_nwstat check_sensors check_udp
nagios:/usr/lib/nagios/plugins#


Note: Comment out the /etc/nagios/esclations.cfg file

Restoring Joomla Site Admin Password

Step 1: Login the site using phpmyadmin

Step 2: Select the Database


You can find you data base name, user name and password on database from configuration.php file of joomla.

Step 3: Select the Users table "jos_users", on left side of panel from the database.

Step 4: Select the Browse in middle window and edit the user name Administration, id e.g 62 by clicking the edit mark "pencil" in this case.

Step 5: In the password field, insert this value "226776f356d7ecf58b60bab12a05d38f" (without quotes), this is hashed value of joomla, new password of admin user. Be careful do not change field type.

Step 6: Press Go, make sure the save option is selected in the bottom of window.

Congratulation you new password joomla is set.

Do not forget to change the password of admin when you login.

Installation of SSL Certificates (self signed) in Debian

Step 1: Make sure that openssl is installad along with apache, otherwise

apt-get install openssl

Step 2: Install the self signed certificate

root@web:mkdir /etc/apach2/ssl
root@web:/etc/apache2/ssl# openssl req -new -x509 -days 365 -nodes -out /etc/apache2/ssl/certificate.pem -keyout /etc/apache2/ssl/certificate.pem

Generating a 1024 bit RSA private key
..............................++++++
.................................++++++
writing new private key to '/etc/apache2/ssl/certificate.pem'
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [AU]:NO
State or Province Name (full name) [Some-State]:Oslo
Locality Name (eg, city) []:Oslo
Organization Name (eg, company) [Internet Widgits Pty Ltd]:Fizaan
Organizational Unit Name (eg, section) []:IT
Common Name (eg, YOUR name) []:www.fizaan.com
Email Address []:postmaster@fizaan.com

root@web:/etc/apache2/ssl# ls
certificate.pem

Step 3: Provide path to certificate in apach2 configuration file /etc/apache2/sites-available/default


ServerAdmin postmaster@fizaan.com
ServerName www.fizaan.com
ServerAlias www
DocumentRoot /var/www/site
SSLEngine on
SSLCertificateFile ssl/certificate.pem

Ste 4: Restart the apache2 and test the site

root@web:/etc/init.d/apache2 stop
root@web:/etc/init.d/apache2 start

Open browser and visit the site name www.fizaan.com, view the certificate.
These certificate the good for demo site or intranet but for commercial you should buy.

Buying Certificate from Third party


Step 1: Provide your CSR

openssl req -nodes -newkey rsa:2048 -keyout myserver.key -out server.csr

Step 2: provide the details to third company e.g COMODO SSL, VeriSign

Step 3: After processing the third comapny shall give you back the file and place it in the path of ssl in apache2 virtualhost file.

References

http://www.debuntu.org/how-to-create-a-self-signed-certificate
https://secure.instantssl.com/products/SSLIdASignup1a
http://www.verisign.com/ssl/buy-ssl-certificates/

Installation of tasks (DNS, Print Server...)in Debian/Ubunt

Installation

# sudo -s
Enter passwd
# tasksel

Redirecting URL Permanently in Apache

Step 1: Install apache if not installed;

You must have apache installed and running.

apt-get install apache2

Step 2: Just add following lines to /etc/apache2/sites-available/default file,
NameVirtualHost *

ServerName domainname.com
ServerAlias www.domainname.com
Redirect permanent / http://www.newdomainname.com/



Where 192.168.0.1 is IP of machine running apache2,
servername is name of machine
Alias can the other name of the machine.
Redirct permanent will redirect to the new domain.


Step 3: Restart the apache

/etc/init.d/apache2 restart

Step 4: Test the site

References
http://www.yolinux.com/TUTORIALS/ApacheRedirect.html