the DoD network will continue to be vulnerable as long as they insist on using windows. lest you think i'm a peacenik or something, i was a boom operator in the USAF for 20 years. i retired in 1997, and joined the local LUG. Alot of the members were NCO sysadmins from the base, who related that "all the officers coming out of the zoo (USAF Academy) only knew windows, and policy did not allow for anything else". So, being good NCOs, they snuck linux in the back door and had it running all over the place, as proxy servers, firewalls, etc. their officers didn't know about it, but as long as nobody complained and it made them look good, they were happy. then when they found out, and had it removed. problems increased dramatically soon thereafter. fuckin' zeros...they don't listen!
MSgt, USAF (Ret.)