Configure Tools

As I talk about the tools configure these tools link each other is very important.

I am here going with Dynamips , Dynagen , and Ubuntu. Key things to set is Ping , telnet and SSH. watch the page https://wiki.ubuntu.com/UncomplicatedFirewall for more information on disabling and enabling the firewall.

I use following commands commends to enable ssh.

$ sudo ufw allow ssh/tcp$ sudo ufw logging on$ sudo ufw enable$ sudo ufw status
root@ admin-desktop:~#apt-get install uml-utilities
root@ admin-desktop:~#modprobe tun
root@ admin-desktop:~#tunctl             This will create loopback interface tap0
root@ admin-desktop:~#ifconfig tap0 10.100.100.100 netmask 255.255.255.0 up
root@ admin-desktop:~#ifconfig            verify 

for example if you want to turn on telnet just use change ssh above to telnet !!

second creating loopback interface in ubuntu. use the uml tools,

user@admin-desktop:~$ sudo –i

So we created the loopback interface in Ubuntu.

Now creating .net file for dynamips.

please refer the http://routing-bits.com/2010/09/28/terminal-server-in-dynamips/ for creating and connecing the access server in different platforms.

please note if you are using the loopback interface please use the similar following command in ubuntu.

F0/0 = NIO_tap:tap0

to connect to your loopback interface we created as above.