In fact, Among Cisco's networking electronics for sale is its line of adaptive security appliances (ASAs). These are placed between an Internet connection as well as a computer or network of computers and they act to safeguard as well as filter data entering and exiting the computer(s). Indeed, The ASA 5510 provides network security. Actually, The Cisco ASA 5510 is the hardware security appliance for enterprise-level computer networks. Among other functions, an ASA 5510 may operate as a firewall that makes only some hosts behind the firewall visible from the open Internet and performs Network Address Translation (NAT) for them.
To Use Cisco ASA 5510 with a T1 Line, you will need PC, Internet connection and Two Ethernet cables. First, you have to disconnect your cable/DSL modem from power. After that, you need to connect one end of an Ethernet cable to one of the "LNK SPD" ports on the back of your ASA. Then, you must connect the other end of that Ethernet port on your cable/DSL modem. Next, you should connect one end of the Ethernet cable to the "MGMT" port of your ASA. Forth, you can connect the other end of that Ethernet cable to the Ethernet port on your computer's network card. After that, you have to Power on your cable/DSL modem. Last, you need to power on your ASA.