Cisco 3750 e using as a NAS & connected with external radius server

[sayantan.joy]

Sir is it possible to use a 3750 e switch as a NAS?

I am using a 24 Online Radius server, I want this 3750 e switch using as nas under this 24 Online Radius. 

Is it possible ? If possible then How to do it?

[Mark Malone]

You would need a router too so you can perform NAT , 3750s cant perform NAT  , NAT will allow you reach the NAS server from the internet

you also need to know what ports your NAS server is using and map between public and private address

http://www.cisco.com/c/en/us/td/docs/security/asa/asa82/configuration/guide/config/nat_static.html#wp1082644

http://www.firewall.cx/networking-topics/network-address-translation-nat.html