Himantha's blog

if your Cisco router is running a recent advip IOS version, it comes with a built-in, application-layer packet sniffing application called Network Based Application Recognition (NBAR). This was originally designed for QoS.

You can try this:

using command ip nbar protocol-discovery. That will enable your packet-sniffing application.

command show ip nbar protocol-discovery stats bit-rate top-n 10. You'll be presented with an output that looks like this:



















It even recognizes common p2p applications, kazaa, bittorent, napster, and so on...

Any new 800 series Cisco routers should support dynamic DNS, provider like DynDNS.com

Here is the config:

Login to you router via console or telnet

Go into Enable mode
Then configure terminal (conf t)

ip domain name dyndns.org
ip ddns update method DynDNS
HTTP add http://username:passwd@members.dyndns.org/nic/update?system=dyndns&hostname=myrouter.dyndns.org&myip=
interval maximum 1 0 0 0

username:password This is the username and password of the account you created at the dyndns provider.

members.dyndns.org/nic/update? after this might cause problems where the Cisco router thinks that you are asking for help you can escape this by pressing CTRL and V at the same time then ?

hostname= The hostname you are updating in this case: cisco2.dyndns.org

myip= Leave this blank the dyndns site will determine what IP your ISP has issued to you

Then add,

interface Dialer1
ip ddns update hostname cisco2.dyndns.org
ip ddns update DynDNS host members.dyndns.org

interface Vlan1
ip ddns update hostname cisco2.dyndns.org
ip ddns update DynDNS host members.dyndns.org

Once you have that all added write the config, then enable dedugging turn on terminal monitor

debugging ip ddns update
term mon

Yesterday I successfully completed my EEE (EXETEL Expert Engineer) program and now look forward to complete the next level.

I am so glade to work on such a company like this because many companies seem not care about the employer’s career.

I’ve been thinking a way to setup my own web and e-mail server as I had a domain and a static IP address for my internet service.

Below is my current configuration:

Step 1 refer “A”
Step 1 refer “B”

“A”

Install Ubuntu 7.10 on your computer then make the host as your domain name: yourdomain.com

Now your network interface needs to change to a static IP, (because we do not use DHCP) also needs to change the host:

192.168.94.10 -----> this will be my server static LAN IP address

127.0.0.1 localhost.localdomain localhost
192.168.94.10 yourdomain.com www

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

Now use terminal to run below commands:

hostname
hostname –f

Both should show: yourdomain.com

then we need to update the system so we need to run:

apt-get update
apt-get upgrade

Ok now we have completed the 1st step.

“B”

Next step is installing all the modules: apache, mysql, etc

Installing apache2:

sudo apt-get install apache2

installing php5 for apache2:

sudo apt-get install php5
sudo apt-get install libapache2-mod-php5

Restarting apache2:

sudo /etc/init.d/apache2 restart

Now we need to check whether the php working or not, so run:

gksudo gedit /var/www/testphp.php

save ths file with



If that doesn’t work run:

sudo a2enmod php5
sudo /etc/init.d/apache2 force-reload

Now we install MYSQL for apache2:

sudo apt-get install libapache2-mod-auth-mysql

sudo apt-get install php5-mysql
sudo apt-get install phpmyadmin

once this is done you need to edit php.ini file, so run:

sudo gedit /etc/php/apache2/php.ini


uncomment the ";extension=mysql.so" line so that it looks like this

extension=mysql.so

Save the file then exit. then run:

sudo /etc/init.d/apache2 restart

If your phpmyadmin wont work or unable to login run the following,

sudo apt-get install mysql-server

This should fix it.

Ok now we have completed the step 2.

You can access your webserver via: http://192.168.94.10/ or once you complete all the port forwarding you will be access it via: www.yourdomain.com

Well this is my first entry for my technical blog.....

Our local telephony supplier recently started IPTV, so thought I would also try applying for a connection. (Just want to see how it is actually working and also to check the quality of images)

I was lucky because there was a special offer as it is New Year season, hence they have provide the equipments and install it free of charge for their existing ADSL customers. (IPTV Set Top Box and the ADSL Router)

Finally they install it and working fine, except one thing, which is my existing Cisco ADSL router is no longer connected to ADSL.

As it is a serious problem for me I’ve been trying to think how to setup my Cisco router to do the same thing, which is currently doing by normal ADSL router.

Checked all the settings in my normal router specially IPTV configurations. It was very simple, all you can see is a new ATM interface with different VPI and VCI values.

So here is my current working Cisco configuration's for IPTV.

ip multicast-routing -> This will enable you to view pictures
no ip igmp snooping
!
bridge irb
!
interface ATM0.2 point-to-point -> IPTV ATM
description SLT IPTV PVC
no snmp trap link-status
atm route-bridged ip
pvc 8/36
encapsulation aal5snap
!
bridge-group 1
bridge-group 1 spanning-disabled
!
interface Vlan1
no ip address
bridge-group 1
!
!
interface BVI1 -> Your LAN range
description LAN
ip address 10.10.10.1 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip accounting output-packets
ip nbar protocol-discovery
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1340
hold-queue 32 in
!
end..