how can i implement remote networking within an organization (100 computers) currently on a switched LAN network. The topology should make use of terminal server for remote dial-up client sessions on the multi modem port adapter on server and VPN clients over internet using L2TP AND IPSec authenticated on radius server
Sounds like a homework question to me.... however this one is easy enough to setup using VMWare, a copy or two of Windows server and then use whatever firewall / VPN solution you want. I'd pilot it at home before going full scale. I personally prefer Cisco gear for firewall / VPN, but there are plenty of other good options.