[NTLUG:Discuss] Encrypted network traffic on a local network

[Leroy Tennison]

Have been testing ipsec-tools and realized that it is for either 
host-to-host encryption or an encrypted tunnel between two  networks.  
Is there a way to have data transmissions between all hosts on a given 
network encrypted?  To do this with IPSec it appears that you would have 
to set up host-to-host SAs for every combination of source and 
destination host.