ASA Configuration #2 Configuring Inbound Access through ASA 5505 Firewall
Permitting Inbound Traffic into the LAN on a SOHO Security Devie normally involves only DNS Registrattion and Portforwarding.
Making this work on an Enterprise Security Device is typically more difficult.
As far as pricing is concerned the Cisco ASA 5505 should be concidered a SOHO device. Nontheless the 'ASA 5505 has the same OS as the most expensive Cisco ASA Enterprise Firewalls. The only difference is that the 5505 has SVI:s instead of real network adapters,
This makes the Cisco ASA 5505 the perfect lab equipment for Security Students.
If your really want to save money: do all the configurations in Packet Tracer!