How to remove existing ip tunnel

I create ip tunnel in centos linux with this link http://www.techonia.com/create-tunnel-interface-linux.

Then开发者_StackOverflow中文版 I want to delete the existing tunnel, I think I have already delete with command ip tunnel del "device". But why the port is still cannot be accessed? or maybe I am wrong when do the deletion? the port i used for tunneling before is 1433 (sql server).

Please try these commands:

ifconfig $tunnel_id down
iptunnel del $tunnel_id

you could try to unload/remove the module tun:

rmmod -a tun