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Published:  2012-10-24 Views:  270
Author:  Laforge
Published in:  Disease
The Cisco ASA 5505 Firewall may be the smallest model inside the new 5500 Cisco series of hardware appliances. While this model is suitable for little companies, branch offices or maybe home use, its firewall security capabilities are the identical as the biggest models (5510, 5520, 5540 and so forth). The Adaptive Security technologies on the ASA firewalls gives solid and reputable firewall protection, advanced application aware security, denial of service attack protection and significantly significantly more. Moreover, the performance on the ASA 5505 appliance supports 150Mbps firewall throughput and 4000 firewall connections per second, which can be over sufficient for compact networks.

In this article I will clarify the basic configuration methods necessary to setup a Cisco 5505 ASA firewall for connecting a tiny network towards the Online. We assume that our ISP has assigned us a static public IP address (e.g 200.200.200.1 as an example) and that our internal network range is 192.168.1.0/24. We will use Port Address Translation (PAT) to translate our internal IP addresses for the public address in the outside interface. The distinction of the 5505 model from the bigger ASA models is the fact that it has an 8-port 10/100 switch which acts as Layer 2 only. That is certainly, you may not configure the physical ports as Layer 3 ports, rather you will need to develop interface Vlans and assign the Layer two interfaces in each and every VLAN. By default, interface Ethernet0/0 is assigned to VLAN two and it really is the outside interface (the a single which connects to the Internet), plus the other 7 interfaces (Ethernet0/1 to 0/7) are assigned by default to VLAN 1 and are utilized for connecting towards the internal network. Let's see the fundamental configuration setup from the most significant steps that you simply must configure.

Step1: Configure the internal interface vlan ------------------------------------------------------ ASA5505(config)# interface Vlan 1 ASA5505(config-if)# nameif inside ASA5505(config-if)# security-level 100 ASA5505(config-if)# ip address 192.168.1.1 255.255.255.0 ASA5505(config-if)# no shut

Step 2: Configure the external interface vlan (connected to Online) ------------------------------------------------------------------------------------- ASA5505(config)# interface Vlan 2 ASA5505(config-if)# nameif outside ASA5505(config-if)# security-level 0 ASA5505(config-if)# ip address 200.200.200.1 255.255.255.0 ASA5505(config-if)# no shut

Step 3: Assign Ethernet 0/0 to Vlan 2 ------------------------------------------------- ASA5505(config)# interface Ethernet0/0 ASA5505(config-if)# switchport access vlan two ASA5505(config-if)# no shut

Step four: Allow the rest interfaces with no shut -------------------------------------------------- ASA5505(config)# interface Ethernet0/1 ASA5505(config-if)# no shut

Do the exact same for Ethernet0/1 to 0/7.

Step 5: Configure PAT on the outside interface ----------------------------------------------------- ASA5505(config)# international (outdoors) 1 interface ASA5505(config)# nat (inside) 1 0.0.0.0 0.0.0.0

Step 6: Configure default route towards the ISP (assume default gateway is 200.200.200.2 --------------------------------------------------------------------------------------------------------- ASA5505(config)# route outdoors 0.0.0.0 0.0.0.0 200.200.200.two 1

The above measures are the certainly important measures you should configure for producing the appliance operational. Needless to say you will find substantially way more configuration details that you just really need to implement in order to enhance the safety and functionality of your appliance, for instance Access Control Lists, Static NAT, DHCP, DMZ zones, authentication etc.

Go to my site in my resource box beneath for far more material about Cisco goods and options. You'll be able to also understand the best ways to configure any Cisco ASA 5500 Firewall Right here.

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