We have an ASA 5520 working since somedays, and we want now to block IM and P2P network traffic through our firewall. We asked our distributor and they send us a link: http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a00808c38a6.shtml
In this link we have information about blocking such traffic by modifying directly in the running-config file. Our question is whether we can find or not a way to do it using the GUI. We will fell safer if we do it like this.
In case there is no chance to do it through GUI, how should I proceed to modify running-config file.