Cisco Firewall?

Hi, Everyone 

 

I found two firewalls from Cisco in a elecktronics bin at my local thrift shop and bought them for about 4 bucks so can I use them and are they any good.

the model mumber is: Cisco ASA 5505 Series and below it says Adaptive Security Appliance

 

And does any body know how I can set this firewall up ??

 

Thanks

http://www.servinet.net/Portals/122/5505GSG.pdf

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