The Cisco ASA 5505 Firewall is the smallest standard in the additional 5500 Cisco chain of hardware appliances. Although this standard is right and proper representing small businesses, branch offices or even domestic apply, its firewall security capabilities are the same as the biggest models (5510, 5520, 5540 etc). The Adaptive Security expertise of the Cisco offers solid and unfailing firewall protection, unconventional relevance aware security, denial of service attack protection and much more. Moreover, the performance of the ASA 5505 appliance wires 150Mbps firewall throughput and 4000 firewall friends for each agree with, which is more than a sufficient amount representing small networks. Arrived this article I will explain the basic configuration steps wanted to setup a Cisco 5505 ASA firewall representing between a small systems to the Internet. We take on with the purpose of our ISP has assigned us a static civic IP deal and with the purpose of our inner system range is 192.168.1.0/24. We will apply Port Address Translation (PAT) to translate our inner IP addresses to the civic deal with of the outside interface. The difference of the 5505 standard from the superior ASA models is with the purpose of it has an 8-port 10/100 switch which acts as Layer 2 barely.